Mechanic Werehouse

Electrical Engineering

2011-05-31T09:20:00.000-07:00

Bicolano DOST scholar is 2011 Electrical Engineering board topnotcher - Philippine Information Agency
Bicolano DOST scholar is 2011 Electrical Engineering board topnotcherPhilippine Information AgencyPrior to being a DOST scholar, Aguirre, a hardworking and diligent third year BS Electrical Engineering student passed and qualified for the Junior Level Assistance Program (DOST JLAP-RA S%26T scholarship). JLAP examination is an aptitude test covering ...

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Lubrication

2011-05-30T21:29:00.000-07:00

Bolt problem prompts change in plans for Lubrication - Spaceflight Now
CTV.caBolt problem prompts change in plans for LubricationSpaceflight NowTrouble with bolts holding thermal covers in place on one of the space station's solar array drive mechanisms has forced flight controllers to modify plans for lubricating the underlying drive gear. When astronaut Michael Fincke ...STS-134 Update: Overnight EVASpace Ref (press release)Shuttle astronauts complete 6th-longest spacewalkRIA NovostiSpacewalkers: Plenty left in the tankThe Flame TrenchDaily Star - Lebanonall 435 news articles��

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Machining

2011-05-30T09:28:00.000-07:00

Goodrich Appoints President, Engine Control and Electrical Power Systems - PR Newswire (press release)
Goodrich Appoints President, Engine Control and Electrical Power SystemsPR Newswire (press release)Ingram, formerly vice president of Primary Flight Controls and Machining Strategy for Goodrich's Actuation Systems business, will report to Curtis Reusser, segment president, Electronic Systems. Ingram replaces Bob Yancey who is retiring. ...and more��

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Oil

2011-04-30T09:20:00.000-07:00

Obama Renews Call to End Energy Subsides - Voice of America
ABC NewsObama Renews Call to End Energy SubsidesVoice of AmericaPhoto: AP US President Barack Obama is renewing his call to end $4 billion tax breaks for Oil and gas companies that are generating billion-dollar profits amid rising gas prices. During his weekly address Saturday, Obama said the tax giveaways are ...Obama slams Oil company profits as gas prices surgeWashington Post (blog)Obama urges end to Big Oil subsidiesPoliticoObama seeks end to Oil industry tax breaksReutersABC News (blog)�-Columbus Dispatch�-The Star-Ledger - NJ.com (blog)all 931 news articles��

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Bearing

2011-04-29T21:32:00.000-07:00

updatedWinter blast Bearing down on Manitoba - CBC.ca
CTV.caupdatedWinter blast Bearing down on ManitobaCBC.caThe coloured areas on the map mark the locations under the winter storm watch. (Environment Canada) Old Man Winter is delivering one last blast to Manitoba. A storm system now developing over the western Dakotas is going to bring strong winds, ...Sioux Valley told to raise dikes by 60 cmBrandon Sunall 60 news articles��

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Automotive

2011-04-29T09:32:00.000-07:00

Goldman Sachs Raising Price Target On Penske Automotive Group (PAG) - Benzinga
Autochannel (press release)Goldman Sachs Raising Price Target On Penske Automotive Group (PAG)BenzingaGoldman Sachs has a Neutral rating and a $23 price target on shares of Penske Automotive Group (NYSE: PAG). In a note to investors, Goldman Sachs writes, "PAG reported 1Q11 EPS of $0.39 vs. our estimate of $0.37 and the Street estimate ...PENSKE AUTO GROUP HAS THE BEST RELATIVE PERFORMANCE IN THE Automotive RETAIL ...Zacks.comPenske Automotive Q1 Revenues Up 15.3%InfoGrokPenske Automotive Group Stock Hits New 52-Week High (PAG)TheStreet.com (blog)RTT News�-Market Intelligence Center�-TradersHuddle.comall 31 news articles��

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Fabrication

2011-04-28T21:33:00.000-07:00

Gulf Island Fabrication post first-quarter net loss - NOLA.com
Gulf Island Fabrication post first-quarter net lossNOLA.comBy Kimberly Quillen, The Times-Picayune Gulf Island Fabrication, Inc., a Houma company that performs Fabrication work for the offshore industry, posted a first-quarter net loss. The company recorded a net loss of $7 million, or 49 cents per share, ...Gulf Island Fabrication, Inc. Reports First Quarter LossTheStreet.com (press release)Gulf Island Fabrication, Inc. Declares Dividend on Common StockTradersHuddle.com (press release)all 10 news articles��

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Fabrication

2011-04-05T21:57:00.000-07:00

Freescale says will not reopen Sendai Fabrication facility - Reuters
Freescale says will not reopen Sendai Fabrication facilityReutersApril 6 (Reuters) - Freescale Semiconductor said it will not reopen its Sendai Fabrication facility after it was extensively damaged by the recent earthquake in Japan. Freescale makes chips for a wide range of uses, including cars, networking, ...Freescale Updates Plans for Sendai Fabrication FacilitySYS-CON Media (press release)all 5 news articles��

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Mechanical Engineering

2011-04-05T09:57:00.001-07:00

Keith Buffinton named dean of Engineering at Bucknell - Bucknell University
Bucknell UniversityKeith Buffinton named dean of Engineering at BucknellBucknell UniversityProfessor of Mechanical Engineering Keith Buffinton has been named dean of the College of Engineering at Bucknell University, Provost Mick Smyer announced today. Buffinton, who was selected following an extensive national search, had been serving as ...and more��

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Engine

2011-04-05T09:57:00.000-07:00

RI Lawmaker: Device Can Stop Texting While Driving - ABC News
RI Lawmaker: Device Can Stop Texting While DrivingABC NewsAP By DAVID KLEPPER AP Rhode Island may enlist some high-tech help in the fight against texting while driving: a device that jams most cell phone capabilities when a vehicle's Engine is running. A state lawmaker has proposed legislation to require ...and more��

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Car

2011-04-04T21:54:00.000-07:00

PRico toddler dies after being left in hot Car - The Associated Press
PRico toddler dies after being left in hot CarThe Associated PressSAN JUAN, Puerto Rico (AP) %26mdash; A toddler died Monday after being found unresponsive in the back seat of a sweltering Car parked outside his gynecologist mother's workplace, police said. The 21-month-old boy was left for hours in a Car seat while his ...and more��

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Bearing

2011-04-04T21:52:00.000-07:00

Powerful storms Bearing down on Carolinas - Charlotte Observer
Powerful storms Bearing down on CarolinasCharlotte ObserverThe satellite image from Accuweather.com shows a large band of storms to the west of the Charlotte area. Severe thunderstorms and tornadoes pummeled the mid-South on Monday afternoon, and the question is whether those storms will retain ...Powerful storms Bearing down on CarolinasThe Herald | HeraldOnline.comall 2 news articles��

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Oil

2011-04-02T21:49:00.001-07:00

A mind-boggling energy policy - Daily Comet
Globe and MailA mind-boggling energy policyDaily CometA few weeks ago, the president and members of his staff were touting the fact that domestic Oil production in 2010 was at the highest level since 2003. No doubt they were repeating that mantra in part to push back against critics of the offshore Oil ...Obama pushes for Oil use reduction, clean fuel technologyReutersObama: Clean energy technologies 'aren't science fiction anymore'Seattle Post IntelligencerEditorial: Obama must show commitment to get an energy planDallas Morning NewsFox News (blog)�-St. Augustine Record�-Voice of Americaall 3,440 news articles��

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Mechanical Engineering

2011-04-02T21:49:00.000-07:00

International honour for Leeds engineer - Bioscience Technology
International honour for Leeds engineerBioscience TechnologyProfessor Duncan Dowson CBE, former Pro-Vice Chancellor and Head of the Department of Mechanical Engineering at the University of Leeds, has been made an Honorary Fellow of the Royal Society of Edinburgh (RSE) - the highest accolade given by Scotland's ...and more��

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Bearing

2011-04-02T10:00:00.000-07:00

Political pressure also Bearing on Florida unions - BusinessWeek
Political pressure also Bearing on Florida unionsBusinessWeekWhile political assaults on public employee unions in Wisconsin and other states have been grabbing the headlines, the workers' counterparts in Florida also have been under attack from the Republican-controlled Legislature. ...and more��

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Engine

2011-04-01T21:51:00.000-07:00

Joe Gibbs Racing pinpoints some Engine issues - ESPN
TSNJoe Gibbs Racing pinpoints some Engine issuesESPNKyle Busch says Joe Gibbs Racing has determined that problems with two of its Engines last weekend at Auto Club Speedway in California were valve-related. Joey Logano's team switched his the morning of Sunday's race when valve leakage was discovered. ...Kyle Busch: JGR moving past Engine troubFOXSports.comKyle Busch believes diagnosing valve problem important step in ending JGR's ...Baltimore Sunall 198 news articles��

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Oil

2011-03-31T09:17:00.000-07:00

Obama, Steering for the Center, Draws Dissent From Both Sides - New York Times
CBC.caObama, Steering for the Center, Draws Dissent From Both SidesNew York TimesHe stood fast by nuclear power, promised swifter access for Oil companies and prioritized climate change. Yet he got little credit from either side. Environmental groups criticized Obama for supporting nuclear power, backing the Oil industry and ...Obama lays out plan to cut reliance on imported OilHouston ChronicleObama urges one-third cut in Oil importsBoston GlobeThe Oil and the Glory: The Fed, and why $105 Oil prices may be a bubbleForeign PolicySan Francisco Chronicle�-Globe and Mail�-Los Angeles Timesall 2,118 news articles��

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Mechanical Engineering

2011-03-30T21:22:00.000-07:00

Virginia Tech's Chris Fuller Named Langley Professor of Engineering - PR Newswire (press release)
Virginia Tech's Chris Fuller Named Langley Professor of EngineeringPR Newswire (press release)HAMPTON, Va., March 30, 2011 /PRNewswire-USNewswire/ -- Christopher R. Fuller, the Roanoke Electric Steel Professor of Mechanical Engineering at Virginia Tech, is the newly appointed Samuel P. Langley Professor of Engineering at the National Institute ...and more��

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Car

2011-03-30T09:40:00.000-07:00

ZipCar Prices IPO Stock at $14 to $16 Per Share - ABC News
The Business InsiderZipCar Prices IPO Stock at $14 to $16 Per ShareABC NewsAP Car-sharing service ZipCar Inc. and some of its investors will sell 8.33 million shares of stock for $14 to $16 each in an initial public offering. The Cambridge, Mass.-based service that's popular in large cities and on college campuses said in a ...ZipCar IPO: Everything You Need to KnowWall Street Journal (blog)ZipCar sees IPO pricing at $14-$16/shrReutersZipCar Now Wants To Raise $130 Million In Its IPOThe Business InsiderRenaissance Capital�-GigaOmall 92 news articles��

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Bearing

2011-03-29T21:35:00.001-07:00

NN Inc Sets Its Bearing For Growth - Forbes (blog)
Forbes (blog)NN Inc Sets Its Bearing For GrowthForbes (blog)NN Inc. manufacturers and supplies high precision metal Bearing components, industrial plastic and rubber products and precision metal components to a variety of markets around the globe. The company is headquartered in Johnson City, Tennessee and has ...and more��

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Fabrication

2011-03-29T21:35:00.000-07:00

Gold Fabrication set for biggest rise since 2000-CPM - Reuters Africa
Gold Fabrication set for biggest rise since 2000-CPMReuters AfricaThe New York-based company said Fabrication demand for the metal notched a slight gain for the first time in three years in 2010, recovering from an 18-year low in 2009, aided by forecasts that the price of bullion may begin to plateau after more than ...CPM Group Releases Gold Yearbook 2011Commodities Now OnlineInvestors remain net buyers of gold: CPM 2011 Gold YearbookCommodity Onlineall 5 news articles��

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Automotive

2011-03-29T09:33:00.000-07:00

David Davis Jr. Dies at 80; Elevated Automotive Press - New York Times
New York Times (blog)David Davis Jr. Dies at 80; Elevated Automotive PressNew York TimesDavid E. Davis Jr., an editor and writer who transformed Automotive journalism by bringing an irreverent tone, a literary sensibility and top-notch writers to the magazines Car and Driver and Automobile, died on Sunday in Ann Arbor, ...David E. Davis, Jr., Automotive Journalism's "Hemingway on Wheels," Is DeadInside LineLegendary Automotive journalists David E. Davis Jr. dies at 80eGMCarTechDavid E. Davis, Jr. - Dean of Automotive journalism, dead at 80Autoblog (blog)CNNMoney�-TFLcar.com�-The Detroit Newsall 179 news articles��

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Machining

2011-03-26T22:00:00.000-07:00

Vaughan shooting leaves man critical - CBC.ca
Vaughan shooting leaves man criticalCBC.caThe shooting happened outside the Superior Machining and Repairs plant at 8110 Keele St. near Highway 7 just after 4:30 pm ET. York Regional Police have charged 49-year-old Kulwinder Galsi with attempted murder. Toronto Insp. Fred Moffatt told CBC News ...Man arrested in Vaughan shootingToronto SunPolice search for suspects after man shot in head in VaughanNational Post (blog)Police make arrest after man shot in the head in Vaughan680 Newsall 10 news articles��

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Lubrication

2011-02-22T11:43:00.000-08:00

New Lubrication System for Wind Energy Applications - Azom.com
Azom.comNew Lubrication System for Wind Energy ApplicationsAzom.comSKF, the world's leading knowledge engineering company, has enhanced its innovative range of Lubrication systems for the wind energy sector with the introduction of a high performance feeder block for its MonoFlex single line Lubrication systems. ...and more��

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Engine

2011-02-22T09:46:00.000-08:00

Navistar Reaches Development Agreement With EcoMotors International On ... - PR Newswire (press release)
Navistar Reaches Development Agreement With EcoMotors International On ...PR Newswire (press release)EcoMotors International's first product targeted for commercial application is a turbo-diesel version of the innovative opposed-piston, opposed-cylinder Engine. "We continue to be on the cutting edge of technology and our development agreement with ...and more��

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Electrical Engineering

2011-01-31T09:19:00.000-08:00

Gill-Simpson Acquires W.R. Casteel Company - PR Newswire (press release)
Gill-Simpson Acquires W.R. Casteel CompanyPR Newswire (press release)31, 2011 /PRNewswire/ -- Gill-Simpson, a Baltimore-based Electrical Engineering and construction company, today announced its acquisition of the assets of ...Gill-Simpson buys Pa.-based WR Casteel Co.Bizjournals.comall 8 news articles��

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Fabrication

2011-01-30T21:17:00.000-08:00

Mangalore: Fabrication of Land Records %26ndash; Corporator Faces Case - Daijiworld.com
Mangalore: Fabrication of Land Records %26ndash; Corporator Faces CaseDaijiworld.comMangalore, Jan 31: Abdul Aziz, a city corporator representing Kudroly ward, and 13 others, are facing charges of fabricating land records and usurping of a ...and more��

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Bearing

2011-01-12T10:17:00.000-08:00

SLC agrees not to ticket homeless Bearing signs - Salt Lake Tribune
SLC agrees not to ticket homeless Bearing signsSalt Lake TribunePeople using signs to solicit handouts don't need to worry about being cited by Salt Lake City police anymore. ...and more��

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Fabrication

2010-12-31T09:15:00.000-08:00

Kasturi Marine Set To Become Regional Leader In Heavy Fabrication Works - Bernama
Kasturi Marine Set To Become Regional Leader In Heavy Fabrication WorksBernama"The Fabrication yard will be able to fabricate floating production, storage and offloading (FPSO), floating storage offloading (FSO) and floating liquefied ...and more��

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Lubrication

2010-12-30T21:17:00.000-08:00

Shell Expanding China Lubricant Business, Starts Work On New Plant - Wall Street Journal
Shell Expanding China Lubricant Business, Starts Work On New PlantWall Street JournalThe facility in Zhuhai, Guangdong province, alongside an existing Shell lubricant plant, will make greases for passenger cars and industrial bearing ...Shell Begins Construction of its Largest Grease Manufacturing PlantMachinery Lubrication Magazall 5 news articles��

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Car

2010-12-30T09:50:00.000-08:00

Ford's Cars Get Sync Destinations App: Welcome to Your Car of Tomorrow - Fast Company
Fast CompanyFord's Cars Get Sync Destinations App: Welcome to Your Car of TomorrowFast CompanyFord's just unleashed its first mobile Sync app for its digitally connected Cars. It's called Destinations, and lets you send traffic and ...and more��

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Bearing

2010-12-30T09:44:00.000-08:00

Winter storm still Bearing down on Western MT - KPAX-TV
Washington PostWinter storm still Bearing down on Western MTKPAX-TVMISSOULA - If you haven't had a chance to build a snowman yet this winter, this week could be your golden opportunity, as one of the strongest storms yet ...Killing freeze possible later this weekAZFamilyall 648 news articles��

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Mechanical Engineering

2010-12-16T22:02:00.000-08:00

CSU, Applegate to collaborate on hydropower study - Northern Colorado Business Report
CSU, Applegate to collaborate on hydropower studyNorthern Colorado Business ReportLindsay George, a water resource engineer with Glenwood Springs-based Applegate, and Dan Zimmerle, a research scientist and adjunct Mechanical Engineering ...and more��

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Lubrication

2010-11-30T09:20:00.000-08:00

Shell Lubricants: delivering value through continous improvement - Industrial Fuels and Power
Industrial Fuels and PowerShell Lubricants: delivering value through continous improvementIndustrial Fuels and PowerIFandP was invited recently to Shell Lubricants' laboratories in Hamburg, Germany. Throughout the day, visitors from the media were thoroughly briefed on ...

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Automotive

2010-10-31T09:17:00.000-07:00

Top Shop provides Automotive services - Opelousas Daily World
Top Shop provides Automotive servicesOpelousas Daily WorldRussell Dupuis graduated from the University of Southwestern Louisiana, now UL, in 1981 with a ...and more��

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Lubrication

2010-10-30T21:18:00.000-07:00

SKF Buys Lincoln Industrial As Net Profit Surges - Wall Street Journal
Drives %26 ControlsSKF Buys Lincoln Industrial As Net Profit SurgesWall Street JournalLincoln Industrial expects almost $400 million this year in sales of Lubrication systems and equipment such as grease guns, with an operating margin of 24%. ...SKF Buys Lincoln Industrial for $1 Billion From Harbour to Tap US, AsiaBloombergSwedish firm buys St. Louis-based Lincoln IndustrialSt. Louis Post-DispatchSKF acquires US based Lubrication systems company Lincoln IndustrialCisionWire (press release)Economic Times�-The Local.se�-MSN Indiaall 56 news articles��

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Fabrication

2010-10-30T09:22:00.000-07:00

Gulf Island Fabrication, Inc. Declares Dividend on Common Stock - MarketWatch (press release)
Gulf Island Fabrication, Inc. Declares Dividend on Common StockMarketWatch (press release)Gulf Island Fabrication, Inc., based in Houma, Louisiana, is a leading fabricator of offshore drilling and production platforms, hull and/or deck sections ...Gulf Island Fabrication, Inc. Reports Third Quarter EarningsMarketWatch (press release)all 17 news articles��

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Fabrication

2010-10-24T00:15:00.000-07:00

Signal International plans to hire an additional 200 workers - WLOX
Signal International plans to hire an additional 200 workersWLOXThe marine and Fabrication company won a multi-million dollar contract this month to build up its workforce. The new hires are excepted give South ...and more��

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Engine

2010-10-23T22:04:00.000-07:00

Official: New V8 Engines from BMW for Wiesmann MF4 and MF5 - BMW BLOG (blog)
BMW BLOG (blog)Official: New V8 Engines from BMW for Wiesmann MF4 and MF5BMW BLOG (blog)%26ldquo;Yes we stop producing the MF5 with the V10 Engine but we will not stop the MF5 model. We are currently in discussion which Engine we will take. ...Wiesmann Goes V8 Twin-TurboMotorwardWiesmann Packs New BMW Engines Into Old-School Sports CoupesMotorTrend MagazineWiesmann confirms the use of BMW's new twin-turbo V8 for the MF4 and MF5Top Speed (blog)all 6 news articles��

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Lubrication

2010-09-30T09:23:00.000-07:00

NanoMech Gets $1 Million Phase II Grant, Plans Expansion - Arkansas Business Online
NanoMech Gets $1 Million Phase II Grant, Plans ExpansionArkansas Business Online"This product provides Lubrication capability that's never existed before," said Jim Phillips, chairman of the board for NanoMech. ...and more��

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Fabrication

2010-08-31T09:22:00.000-07:00

Fabrication plausible, journal editor believes - Boston Globe
SalonFabrication plausible, journal editor believesBoston GlobeThat means it is possible that the data were not fabricated. But he said it is not plausible to assume that the trials in question were recorded to ...Journal Editor Says He Believes Retracted Hauser Paper Contains Fabricated DataScience AAASHarvard scientist's work scrutinizedUPI.comHarvard Researcher May Have Fabricated DataNew York Timesall 16 news articles��

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Electrical Engineering

2010-08-30T21:24:00.000-07:00

Discera Names Terry Barrette as Vice President of Operations to Build Next ... - MarketWatch (press release)
Discera Names Terry Barrette as Vice President of Operations to Build Next ...MarketWatch (press release)She received a BS in Electrical Engineering from San Jose State University. Founded in 2001 to commercialize pioneering work at the University of California ...and more��

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Machining

2010-08-30T09:25:00.000-07:00

CimatronE 10.0 Will be Previewed at IMTS - PR Newswire (press release)
CimatronE 10.0 Will be Previewed at IMTSPR Newswire (press release)Machining times are reduced, with significant upgrades to rough and cleanup strategies, and there's a new helical finishing strategy. ...and more��

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Oil

2010-07-31T09:26:00.000-07:00

Response Time in Michigan Oil Spill Disputed - 13wmaz
Reuters (press release)Response Time in Michigan Oil Spill Disputed13wmazDETROIT - Government logs show Enbridge Energy Partners reported crude Oil spilling into a creek that leads to the Kalamazoo River at 1:33 ...Government logs show delays in report of Michigan Oil spillDetroit Free PressMichigan: Oil Spill Response Focuses on WildlifeNew York TimesEnbridge: 5000-6000 Barrels Of Oil Removed From Michigan SpillWall Street JournalChristian Science Monitor�-The Associated Press�-CNN Internationalall 3,571 news articles��

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Engine

2010-07-30T21:23:00.000-07:00

Advanced Engine Technologies Announces 1-for-20 Reverse Stock Split - MarketWatch (press release)
Advanced Engine Technologies Announces 1-for-20 Reverse Stock SplitMarketWatch (press release)The OX2 is a 4-stroke, 1.1-liter internal combustion Engine that weighs 75 percent less than and is half the size of traditional internal combustion Engines ...Advanced Engine Technologies Announces 1-for-20 Reverse Stock Split - Quick FactsStock Markets ReviewConverge Global Announces Reverse Stock SplitMarketWatch (press release)Converge Global Announces Reverse Stock SplitTrading Markets (press release)all 23 news articles��

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Lubrication

2010-07-30T09:31:00.000-07:00

Top Six Sex Problems Women Experience - CalorieLab Calorie Counter News
Telegraph.co.ukTop Six Sex Problems Women ExperienceCalorieLab Calorie Counter News... orgasm problems (45 percent), arousal issues (40 percent), lack of satisfaction (39 percent), lack of Lubrication (37 percent) and pain (36 percent). ...Two-third of women face orgasm problemsTimes of IndiaTwo-third of women face problem with orgasm--studyTheMedGuruWomen More Prone To Orgasm ProblemsOneindiaTelegraph.co.uk�-LiveScience.comall 49 news articles��

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Electrical Engineering

2010-07-29T21:28:00.000-07:00

New graphics processor cluster gives Vanderbilt supercomputer a major boost - Vanderbilt University News
New graphics processor cluster gives Vanderbilt supercomputer a major boostVanderbilt University NewsProfessor of Electrical Engineering Ronald Schrimpf standing in front of a bank of ACCRE processors. (Photo by Daniel DuBois) What do an astrophysicist ...and more��

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Machining

2010-07-29T09:30:00.000-07:00

Small machine shops hit hard by flooding - Milwaukee Journal Sentinel
Small machine shops hit hard by floodingMilwaukee Journal SentinelKen Dragotta and Cecil Edirisinghe say their precision Machining and motor manufacturing businesses survived the worst economic downturn since the Great ...and more��

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Fabrication

2010-07-28T21:29:00.000-07:00

Coup letter a malicious Fabrication, says King - Radio New Zealand
New Zealand HeraldCoup letter a malicious Fabrication, says KingRadio New Zealand... Annette King says an anonymous letter sent to the media suggesting a move would be made against her and leader Phil Goff is a malicious Fabrication. ...Chris Carter suspended over 'coup' letterNew Zealand Heraldall 29 news articles��

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Car

2010-07-27T09:31:00.000-07:00

Leaf Electric Car: Nissan Reveals Details - Wall Street Journal (blog)
msnbc.comLeaf Electric Car: Nissan Reveals DetailsWall Street Journal (blog)Nissan Motor Co., with by far the most ambitious roll-out of electric Cars among the major makers, is the Belle of the ball at the Plug In ...Enterprise to rent out Nissan Leaf electric CarsDetroit Free PressRent a Leaf: Enterprise Buys a FleetWall Street JournalEnterprise to offer Nissan Leaf to rental driversThe Associated PressBloombergall 137 news articles��

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Machining

2010-07-25T09:59:00.000-07:00

Ad Details - Rocky Mount Telegram
Ad DetailsRocky Mount TelegramNash Community College is accepting applications for the following positions:Machining InstructorAssociates Degree in Machining Technology with a minimum of ...

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Engine

2010-06-30T09:32:00.000-07:00

A look at the 2010 BMW 335d - WQOW TV News 18
MiamiHerald.comA look at the 2010 BMW 335dWQOW TV News 18More>> By The Associated Press TYPE: Front-Engine, rear-wheel-drive, five-passenger, compact sedan. Engine: 3-liter, double overhead cam, twin-turbo, ...2010 BMW 3-Series has diesel powerThe Associated PressShocker: 2012 BMW 3 Series minus one cylinder?Indian Cars Bikes (blog)all 150 news articles��

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Lubrication

2010-05-31T09:37:00.000-07:00

Shell LubeExpert Service Helps Customers Meet Lubricant Challenges - Machinery Lubrication Magaz
Shell LubeExpert Service Helps Customers Meet Lubricant ChallengesMachinery Lubrication MagazCritical applications and challenging Lubrication problems sometimes require special help. The Shell LubeExpert technical consultation service is available ...

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Oil

2010-05-30T21:37:00.000-07:00

Anagrams: Lower Marine Riser Package Cap is Oil spill dark humor - San Francisco Chronicle (blog)
The GuardianAnagrams: Lower Marine Riser Package Cap is Oil spill dark humorSan Francisco Chronicle (blog)There is nothing funny about the gulf coast Oil volcanic geyser. Lacking a disaster plan and protocol, BP has muddled, fuddled and tried one technique after ...Officials warn Oil spill may not be capped until AugustLos Angeles TimesMarkey: BP Oil spill is 'criminal'; BP: Oil leak may continue until August ...Washington Post (blog)BP Shifts Gears in Gulf Oil FightWall Street JournalReuters�-The Associated Press�-New York Daily Newsall 7,048 news articles��

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Electrical Engineering

2010-05-30T09:37:00.000-07:00

Cal Poly Electrical Engineering student won't let anything short-circuit his dream - San Luis Obispo Tribune
San Luis Obispo TribuneCal Poly Electrical Engineering student won't let anything short-circuit his dreamSan Luis Obispo TribuneRobert Peralta, an Electrical Engineering major, is set to graduate from Cal Poly. By Tribune photo by David Middlecamp He will receive his bachelor's ...and more��

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Electrical Engineering

2010-05-29T21:36:00.000-07:00

Engine

2010-05-29T09:36:00.000-07:00

Congressional pork - WatertownDailyTimes.com
ReutersCongressional porkWatertownDailyTimes.comRepresentatives approved a spending bill that contained $485 million to pay for a jet Engine that President Obama, Mr. Gates and the Pentagon do not want. ...Obama vows veto of any bill to fund 2d F-35 EngineReutersObama Says He'Ll Veto Defense Bill With Second F-35 EngineBusinessWeekWhy Did Congress Just Approve Unwanted $485 Million Jet Engine?The AtlanticWire (blog)Los Angeles Times�-Boston Herald�-UPI.comall 333 news articles��

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Automotive

2010-05-28T21:36:00.000-07:00

Treasury Said to Pick Lead Bank for GM IPO as Soon as Next Week - BusinessWeek
Treasury Said to Pick Lead Bank for GM IPO as Soon as Next WeekBusinessWeekWhitacre wants to secure an Automotive lending unit before a public offering in the fourth quarter, people familiar with the plan have said. ...and more��

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Oil

2010-05-25T22:02:00.000-07:00

BP's internal investigation of Oil spill: Several �'warning signs' were ignored - Washington Post
The GuardianBP's internal investigation of Oil spill: Several �'warning signs' were ignoredWashington PostCleanup and containment efforts continue at the Gulf of Mexico site of the Oil spill following the Deepwater Horizon explosion. ...The Latest on the Oil SpillNew York TimesObama's Patience Wears Thin as BP Struggles to Contain Oil SpillFOXNews'Top kill' a tricky maneuver to cap Oil wellLos Angeles TimesABC News�-Reuters�-The Associated Pressall 10,806 news articles��

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Lubrication

2010-05-12T10:04:00.001-07:00

NanoMech Awarded $150000 Fund to Commercialize NanoGlide Lubricant - AZoNano.com
AZoNano.comNanoMech Awarded $150000 Fund to Commercialize NanoGlide LubricantAZoNano.comNanoGlide is a platform technology lubricant with unique properties that significantly reduces friction and mechanical component wear in extreme pressure ...and more��

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Fabrication

2010-05-12T10:04:00.000-07:00

J. Ray McDermott Subsidiary Wins Fabrication Work on Gorgon Project, an ... - MarketWatch (press release)
J. Ray McDermott Subsidiary Wins Fabrication Work on Gorgon Project, an ...MarketWatch (press release)... operator of the Gorgon project, has awarded a Fabrication project to PT McDermott Indonesia (Jakarta, Indonesia), a subsidiary of marine construction ...

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Automotive

2010-04-30T09:28:00.000-07:00

Penske Automotive Reports First Quarter Results - MarketWatch (press release)
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2010-03-31T09:19:00.000-07:00

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PENGETAHUAN DASAR OLI

2009-09-09T02:29:00.000-07:00

FUNGSI OLI:

1. PELUMAS

Oli Mesin harus melumasi seluruh komponen mesin sehingga komponen-komponen yang bergerak dapat bergerak dengan lancar tanpa hambatan. Tentu saja saat mesin di hidupkan, Oli Mesin harus dipompakan dengan cepat keseluruh bagian mesin agar mesin bisa bekerja dengan normal.

Begitu mesin hidup, Oli Mesin harus menciptakan lapisan film diantara permukaan komponen yang bergerak untuk membuat komponen tersebut licin sehingga dapat meningkatkan tenaga, performa dan penghematan.

2. PELINDUNG

Film yang melapisi permukaan logam berfungsi bukan hanya sebagai pelumas, namun juga untuk melindungi komponen agar tidak bergesekan langsung dengan komponen lain yang dapat menyebabkan ke-aus-an.

Selain itu Oli Mesin juga harus mampu mencegah terjadinya korosi pada komponen mesin. Oksidasi yang terjjadi, kontaminasi akibat terjadinya kondensasi, pengaruh dari system pembakaran dan bahan bakar yang dipergunakan, kesemuanya itu menimbulkan keasaman pada Oli Mesin. Saat keasaman ini menyentuh komponen mesin, maka terjadilah korosi dan akibatnya kerusakan komponen akan terjadi.

3. PEMBERSIH

Fungsi ke 3 dari Oli Mesin adalah untuk menjaga agar kondisi dalam mesin tetap bersih. Apabila suatu mesin tidak terjaga kebersihannya, maka efiensi kerja mesin menjadi terganggu. Tumpukan kotoran berupa kerak dan lumpur akan menghambat dan mengganggu kinerja mesin sehingga menurunkan efisiensi penggunaan bahan bakar karena performa mesin yang menurun drastis. Sebagai tambahan, kontaminasi yang terjadi pada Oli Mesin apabila tidak diantisipasi segera, dapat menyebabkan keausan dini pada mesin. Setiap partikel dengan ukuran lebih besar dari 5 mikron hingga 20 mikron akan sangat merusak mesin apabila tidak segera dikeluarkan dari dalam mesin.

4. PENDINGIN

Oli Mesin memiliki peranan terbesar dari seluruh system pendinginan mesin. Radiator hanya berperan untuk mendinginkan mesin bagian atas. Untuk bagian mesin yang lain (crankshaft, camshaft, timing gears, pistons, main and connecting rod bearings dan banyak bagian penting lain dari komponen mesin), fungsi pendinginannya menjadi tanggung jawab Oli Mesin.

Panas pada mesin terjadi akibat terjadinya pembakaran di ruang bakar mesin dan akibat terjadinya gesekan saat komponen mesin bergerak. Oli Mesin mengalir melewati permukaan mesin yang panas agar dapat membuang panas menuju ke bak penampungan Oli Mesin. Dari sini panas dibuang keudara yang mengalir diseputar bak penampungan.

Fungsi pendinginan dari Oli Mesin ini sangat berpengaruh terhadap Fungsi Oli Mesin yang lain. Kurang maksimalnya Fungsi Pendinginan dari Oli Mesin akan menyebabkan kemampuan dari Oli Mesin sebagai Pelumas, Pelindung maupun sebagai Pembersih tidak berfungsi maksimal. Apalagi apabila terjadi Over Heat.

Over Heat dapat mengakibatkan kerusakan dini dari komponen-komponen dalam mesin. Selain itu kondisi mesin yang terlalu panas juga menyebabkan Oil Breakdown (menurunnya kualitas Oli) terlalu cepat sehingga sangat mungkin terjadi kondisi Oli sudah tidak layak pakai jauh sebelum Masa Ganti Oli (Drain Interval) yang direkomendasi tiba. Dengan demikian mesin sempat menggunakan oli yang sudah tidak layak pakai beberapa saat selama sekian Km sampai Masa Ganti Oli tiba. Pada saat itulah terjadi gesekan pada komponen mesin yang mengakibatkan keausan dini.

Untuk memilih Oli Mesin yang tepat, ada 2 hal penting yang menjadi acuan, yaitu SAE VISCOSITY CLASSIFICATION dan API CLASSIFICATION.

SAE VISCOSITY CLASSIFICATION SYSTEMS

THE SOCIETY of AUTOMOTIVE ENGINEERS (SAE)

Sejak awal, SAE dikenal sebagai salah satu karakteristik Oli terpenting. Oli diklasifikasikan sebagai Oli Ringan, Menengah atau Berat tergantung pada Viskositas (kekentalan) nya. The SOCIETY of Automotive Engineers (SAE) mengembangkan system klasifikasi berdasarkan pengukuran Viskositas. System yang telah dimodifikasi selama beberapa tahun tersebut mengklasifikasikan Oli Mesin kendaraan menjadi 11 kelompok atau tingkatan, yaitu SAE 0W, SAE 5W, SAE 10W, SAE 15W, SAE 20W, SAE 25W, SAE 30W, SAE 40W, SAE 50W dan SAE 60W. (klasifikasi yang lain dipergunakan untuk Gear Oil)

“W” yang mengikuti angka viskositas SAE artinya “Winter” yang mengindikasikan bahwa Oli tersebut cocok dipergunakan di temperature yang lebih rendah, sedangkan klasifikasi SAE tanpa “W” menunjukkan bahwa Oli tersebut cocok dipergunakan di temperature yang lebih tinggi. Oli SAE 20, SAE 30, SAE 40, SAE 50 dan SAE 60, harus memiliki viskositas yang cukup memadai di suhu 100 ⁰C dan di suhu 150 ⁰C.

OLI MESIN KENDARAAN

Perkembangan dari Viscosity Index Improvers (salah satu jenis Additive) menjadikan Produsen Oli mampu memproduksi Oli Multi Grade. Oli Multi Grade ini (SAE 0W-30, 5W-20, 5W-30, 5W-40, 10W-30, 10W-40, 15W-40 dan 20W-50) telah dipasarkan selama puluhan tahun di Amerika Utara. Oli Mesin Kendaraan Multi Grade seperti SAE 5W-30, SAE 10W-30 dll telah dipergunakan secara luas karena Oli ini cukup ringan (encer) untuk dipergunakan di temperature rendah, tetapi cukup berat (kental) untuk dipergunakan di temperature tinggi juga dan mampu memberikan performa yang memuaskan. Rekomendasi dari Produsen Mobil untuk Viskositas Oli (SAE) yang direkomendasi, seharusnya ditaati setiap saat. Namun, Tabel di bawah ini dapat dipergunakan oleh pemilik kendaraan sebagai acuan dasar untuk memilih SAE yang diperlukan, yang tentunya mungkin saja tidak sama dengan yang dierekomendasi oleh produsen kendaraan:

GUIDE TO SAE GRADES OF ENGINE OIL

SAE Multi-Grades

Ambient Temperature Range		SAE Grade
°C	°F
–40°C to +40°C	–40°F to +104°F	0W-30
–35°C to +40°C	–31°F to +104°F	5W-30
–30°C to excess of +40°C	–22°F to excess of +104°F	10W-30, 10W-40
–25°C to excess of +40°C	–13°F to excess of +104°F	15W-40
–20°C to excess of +40°C	–4°F to excess of +104°F	20W-50

SAE Single Grades

Ambient Temperature Range		SAE Grade
°C	°F
–30°C to +20°C	–22°F to +70°F	10W
–20°C to +30°C	–4°F to +86°F	20W
0°C to excess of +40°C	+32°F to excess of +104°F	30
+5°C to excess of +40°C	+40°F to excess of +104°F	40
+10°C to excess of +40°C	+50°F to excess of +104°F	50
+20°C to excess of +40°C	+70°F to excess of +104°F	60

Footnotes

Penting untuk dipahami, bahwa System Klasifikasi SAE Viscosity Grade hanya mengidentifikasi viskositas, bukan mengidentifikasikan kualitas dari suatu Oli.

AMERICAN PETROLEUM INSTITUTE (API)

ENGINE SERVICE CLASSIFICATION

Sejak tahun 1970, the American Petroleum Institute, the American Society for Testing and Materials, and the Society of Automotive Engineers telah bekerja sama untuk menjaga kelestarian API Engine Service Classification System. System ini memungkinkan Oli Mesin bisa didefinisikan dan dipilih berdasarkan karakteristik performa dan tipe penggunaannya. Perlu digarisbawahi bahwa, API Engine Service Classification System tidak ada hubungannya dengan SAE Engine Oil Viscosity Classification System. Keduanya hanya dibutuhkan untuk menentukan karakter oli mana yang diperlukan Mesin Kendaraan.

AUTOMOTIVE LUBRICANTS

The API Engine Service Classification System dibedakan menjadi 20 tingkat sesuai table dibawah ini:

Letter Designation	API Service Oil	Description
SA	Untuk mesin bensin dan diesel (tiada lagi)	Oli tanpa additive.
SB	Untuk mesin bensin (tiada lagi)	Some antioxidant and antiscuff properties.
SC	Untuk mesin bensin tahun 1964 (tiada lagi)	Sesuai standar pabrik kendaraan produksi tahun 1964-67.
SD	Untuk mesin bensin tahun 1968 (tiada lagi)	Sesuai standar pabrik kendaraan produksi tahun 1968-71.
SE	Untuk mesin bensin tahun 1972 (tiada lagi)	Sesuai standar pabrik kendaraan produksi tahun 1972-79.
SF	Untuk mesin bensin tahun 1980 (tiada lagi)	Sesuai standar pabrik kendaraan produksi tahun 1980-88.
SG	Untuk mesin bensin tahun 1989 (tiada lagi)	Sesuai standar pabrik kendaraan produksi tahun 1989-93.
SH	Untuk mesin bensin tahun 1994 (tiada lagi)	Sesuai standar pabrik kendaraan produksi tahun 1994-96.
SJ	Untuk mesin bensin tahun 1997	Sesuai standar pabrik kendaraan produksi tahun 1997-2000.
SL	Untuk mesin bensin tahun 2001	Sesuai standar pabrik kendaraan produksi tahun 2001-2004.
SM	Untuk mesin bensin tahun 2004	Sesuai standar pabrik kendaraan Produksi tahun 2004 dst.

Letter Designation	API Service	Oil Description
CA	Untuk mesin ringan dengan bahan bakar kualitas tinggi (tiada lagi)	Sesuai standar Military MIL-L-2104A (1954).
CB	Untuk mesin dengan bahan bakar kualitas lebih rendah. (tiada lagi)	Sesuai standar Military MIL-L-2104A, namun diuji dengan bahan bakar ber sulphur tinggi.
CC	Untuk mesin Diesel dan mesin bensin (tiada lagi)	Sesuai standar Military MIL-L-2104B (1964).
CD	Untuk mesin Diesel (tiada lagi).	Sesuai standar MILL-L-2104C dan standar Caterpillar Series 3.
CD-II	Untuk mesin diesel 2-stroke cycle (tiada lagi)	Sesuai standar API CD, dan standar Detroit Diesel 6V53T.
CE	untuk mesin Diesel Turbo-charged Super-charged heavy-duty Produksi sejak tahun 1983 (tiada lagi)	Sesuai standar untuk API CD, Mack E0-K/2 & Cummins NTC-400
CF	Untuk mesin diesel Off-road Indirect injected dan mesin diesel lainnya termasuk yang menggunakan bahan bakar mengandung sulphur (>0,5%)	Mampu mengontrol secara efektif piston deposits, keausan dan korosi di mesin diesel turbocharged/ supercharged. Dapat digunakan untuk mengganti oli API CD
CF-2	Untuk mesin diesel 2-stroke cycle	Sesuai standar mesin diesel duty two-stroke cycle tahu 1994 dengan efektifitas yang tinggi untuk mengontrol kotoran dan keausan. Dapat menggantikan oli API CD-II
CF-4	Untuk mesin diesel 4-stroke cycle turbocharged, khususnya model terbaru (sejak 1988)	Sesuai standar spec. Caterpillar 1-K juga Mack EO-K/2 dan Cummins NTC-400.
CG-4	Untuk mesin diesel 4-stroke cycle tahun 1995 menggunakan bahan bakar mengandung sulphur rendah <0.05% s/d <0,5%	Mampu secara efektif mengontrol kotoran pada piston akibat panas tinggi, keausan, korosi, gelembung udara, oksidasi dan akumulasi jelaga. Dapat menggantikan API CD, CE dan CF-4.
CH-4	Untuk mesin diesel 4-stroke cycle kecepatan tinggi, dirancang untuk standar emisi mesin tahun 1998, menggunakan bahan bakar sulphur rendah (<0,05% to <0.5%).	Mampu secara efektif mengontrol kotoran pada piston akibat panas tinggi, keausan, korosi, gelembung udara, oksidasi dan akumulasi Jelaga. Dapat menggantikan API CD,CE, CF-4 dan CG-4
CI-4 (CI-4 Plus)	Menunjukkan performa yang jauh melebihi API CH-4. Untuk mesin diesel 4-stroke cycle kecepatan tinggi, digunakan di jalan raya dan off-road menggunakan bahan bakar ber sulphur rendah, kurang dari 0.05%. Dirancang untuk memenuhi standar emisi mesin kendaraan tahun 2002 dan meningkatkan kekuatan mesin memanfaatkan *Exhaust Gas Recirculation (EGR)	Menunjukkan performa yang jauh melebihi API CH-4, dalam hal mengontrol viskositas, akumulasi jelaga, oksidasi dan kotoran pada piston. Dapat menggantikan API CD, CE, CF-4, CG-4 dan CH-4. Beberapa oli CI-4 juga lulus uji API CI-4 Plus yang memiliki kemampuan lebih baik didalam melindungi mesin dari ke-aus-an, mengatasi jelaga dan panas.
CJ-4	Untuk mesin diesel 4-stroke cycle kecepatan tinggi produksi tahun 2007 dan memenuhi standar emisi termasuk model produksi tahun sebelumnya. Oli ini cocok dipergunakan untuk segala mesin diesel dengan bahan bakar yang mengandung sulphur lebih dari 500 ppm (0.05% by weight). Kategori baru ini dirancang untuk memenuhi peraturan emisi terbaru yang ramah lingkungan dan meningkatkan kekuatan mesin memanfaatkan *Exhaust Gas Recirculation (EGR).	Oli yang dirancang untuk API CJ-4 ini telah diproduksi oleh Petro-Canada dan juga dapat menggantikan API, CD, CE, CF-4, CG-4, CH-4 and CI-4 / CI-4 Plus.

Catatan :

Exhaust Gas Recirculation (EGR) adalah suatu system untuk menyalurkan kembali sebagian gas buang kedalam saluran masuk silinder. Tujuannya adalah untuk menurunkan temperature pembakaran karena temperature pembakaran yang tinggi menghasilkan produk No2.Hal ini bisa tercapai karena pada dasarnya gas buang merupakan gas inert yang masih mengandung cukup banyak oksigen dan mempunyai nilai panas spesifik yang lebih tinggi. 15% EGR mengurangi emisi No2 sampai 75%. Tetapi jika lebih dari 15%, pembakaran dalam silinder menjadi tidak sempurna sehingga mengakibatkan emisi hidrokarbon dan karbon monoksida meningkat.

MAKING MULTI GRADE OIL

Untuk membuat Multi-Grade Oil, dibutuhkan suatu Additive yang disebut Viscosity Index Improvers (VII). Semakin banyak VII ditambahkan ke Oli, maka semakin panjang pula Viscosity Index dari oli tersebut. Akan tetapi ketahanan dari Oli juga semakin menurun apabila Viscosity Index semakin panjang. Mari kita amati tulisan dari Ahli Oli berikut ini:

10W-30 oil increases its viscosity at high temperature by a factor of three, which requires a significant amount of these VII molecules. 10W-40 oil increases its high temperature viscosity by a factor of four, which requires even more even longer molecules. 20W-50 which sounds a lot like 10W-40, only increases its high temperature viscosity by a factor two and a half, so it requires fewer of these molecules than even 10W-30. 15W-40 also increases its high temperature viscosity by about two and a half, so this oil is also substantially more stable than 10W-40. Most passanger car oils today use inexpensive VII molecules that break apart relatively easily. Conversely, most diesel engine oil VIIs are chosen from more expensive chemicals that are more shear stable, since an oil change in a large diesel is expected to last for 15.000 to 150,000 miles.

Artinya:

Oli SAE 10W-30 meningkatkan viskositasnya di temperature tinggi dengan perbandingan 1:3, yang memerlukan sejumlah melekul VII cukup banyak. Oli SAE 10W-40 meningkatkan viskositasnya di temperature tinggi dengan perbandingan 1:4, yang memerlukan molekul yang lebih panjang lagi. Oli SAE 20W-50 yang sangat mirip dengan Oli SAE 10W-40, ternyata meningkatkan viskositasnya di temperature tinggi dengan perbandingan hanya 1:2.5 sehingga hanya memerlukan lebih sedikit molekul VII dibandingkan dengan Oli SAE 10W-30. Oli SAE 15W-40 juga meningkatkan viskositasnya di temperature tinggi dengan perbandingan 1:2.5, sehingga secara meyakinkan Oli SAE 15W-40 ini lebih stabil dibandingkan dengan Oli SAE 10W-40. Sebagian besar Oli untuk mobil penumpang yang beredar saat ini menggunakan molekul VII yang tidak mahal yang relative mudah rusak. Sebaliknya, sebagian besar Oli untuk mesin diesel menggunakan molekul VII yang lebih mahal yang lebih tahan gesekan. Dengan demikian diharapkan, masa ganti oli untuk sebagian besar Oli Diesel adalah antara 15.000 hingga 150.000 mil (25.000 Km hingga 250.000 Km)

Regards,

Hadrianus

ME - SPP @ JGF

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Oli Sintetik Vs Oli Mineral

2009-09-09T02:26:00.001-07:00

Banyak pemilik kendaraan yang bingung dalam memilih apakah harus menggunakan pelumas sintetik, atau cukup pelumas mineral?. Di satu sisi mereka ingin memberi proteksi atau perlindungan pada mesin kendaraan dan di sisi lain harga pelumas yang murni sintetik pastinya tidak murah. Kualitas pelumas yang 100% sintetik (fully synthetic) memang sangat baik. Namur harga pelumas mahal sebab pelumas sintetik umumnya produk impor. Bila yang Anda butuhkan sebenarnya cukup pelumas mineral, kenapa mesti memakai sintetik?
Pelumas sintetik dan mineral dibedakan atas bahan dasar pembuatannya. Pelumas mineral terbuat dari minyak mentah (crude oil), dengan penambahan aditif sekitar 10-20%. Sedangkan pelumas sintetik terbuat dari unsur-unsur kimia sintetik, baik bahan dasarnya maupun aditifnya. Proses pembuatannya pun cukup rumit, maka harga pelumas sintetik jauh lebih mahal dari pelumas mineral. Perlu diwaspadai jika ada pelumas sintetik dengan harga lebih murah dari pelumas mineral.

Kelebihan Pelumas Mineral
- Harga bersaing
- Teruji kehandalannya dalam pemakaian normal

Kelebihan Pelumas Sintetis
- Memiliki daya tahan yang tinggi saat mesin bekerja berat misalnya cuaca yang sangat panas, perjalanan jauh dan berat seperti di padang pasir atau digurun.
- Tahan terhadap cuaca yang rendah (dingin), kekentalan oli sintetik tidak berubah.
- Kekentalannya baik karena pada saat dingin pelumas sintetik tidak membeku, dan pada saat panas pelumas sintetik tidak mencair.

Kondisi diIndonesia cukup stabil, tidak terlalu panas dan tidak terlalu dingin. Penggunaan oli mineral dirasa sudah cukup atau sesuai dengan standar yang diterapkan oleh pabrikan. Sebab bila kondisi mengemudi anda normal, namun menggunakan pelumas sintetis sangat disayangkan anda malah melakukan pemborosan.

Dewasa ini ada banyak pelumas sintetik yang beredar di pasar. Bila Anda harus menggunakan oli sintetik sebaiknya pilihlah yang 100% sintetik, bukan semi sintetik atau synthetic base, agar Anda benar-benar mendapatkan tambahan performa bagi uang yang telah Anda keluarkan. Dan jangan lupa ganti filter oli secara teratur.

sumber : mbah google..

cuma copas sih., semoga bermanfaat..

Machining

2009-08-31T09:21:00.001-07:00

New Numerical Computer Control System... - Azom.com
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Engine

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Bearing

2009-08-30T09:26:00.001-07:00

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2009-06-11T09:28:00.001-07:00

Oil for Lubrication (Indonesian)

2008-06-14T01:05:00.000-07:00

OLI

Minyak pelumas mesin atau yang lebih dikenal dengan nama oli atau oli mesin memang banyak ragam dan macamnya. Bergantung jenis penggunaan mesin itu sendiri yang membutuhkan oli yang tepat untuk menambah atau mengawetkan usia pakai (life time) mesin.

Daftar isi
1. Fungsi
2. Jenis
2.1. Oli Mineral
2.2. Oli Sintetis
2.3. Kekentalan (Viskositas)
2.4. Kualitas
2.5. API Service Rating
2.5.1. API mesin bensin
2.5.2. API mesin diesel

Fungsi

Semua jenis oli pada dasarnya sama. Yakni sebagai bahan pelumas agar mesin berjalan mulus dan bebas gangguan. Sekaligus berfungsi sebagai pendingin dan penyekat. Oli mengandung lapisan-lapisan halus, berfungsi mencegah terjadinya benturan antar logam dengan logam komponen mesin seminimal mungkin, mencegah goresan atau keausan. Untuk beberapa keperluan tertentu, aplikasi khusus pada fungsi tertentu, oli dituntut memiliki sejumlah fungsi-fungsi tambahan. Mesin diesel misalnya, secara normal beroperasi pada kecepatan rendah tetapi memiliki temperatur yang lebih tinggi dibandingkan dengan Mesin bensin. Mesin diesel juga memiliki kondisi kondusif yang lebih besar yang dapat menimbulkan oksidasi oli, penumpukan deposit dan perkaratan logam-logam bearing.

Oli Mineral
Oli mineral berbahan bakar oli dasar (base oil) yang diambil dari minyak bumi yang telah diolah dan disempurnakan. Beberapa pakar mesin memberikan saran agar jika telah biasa menggunakan oli mineral selama bertahun-tahun maka jangan langsung menggantinya dengan oli sintetis dikarenakan oli sintetis umumnya mengikis deposit (sisa) yang ditinggalkan oli mineral sehingga deposit tadi terangkat dari tempatnya dan mengalir ke celah-celah mesin sehingga mengganggu pemakaian mesin.

Oli Sintetis
Oli Sintetis biasanya terdiri atas Polyalphaolifins yang datang dari bagian terbersih dari pemilahan dari oli mineral, yakni gas. Senyawa ini kemudian dicampur dengan oli mineral. Inilah mengapa oli sintetis bisa dicampur dengan oli mineral dan sebaliknya. Basis yang paling stabil adalah polyol-ester (bukan bahan baju polyester), yang paling sedikit bereaksi bila dicampur dengan bahan lain. Oli sintetis cenderung tidak mengandung bahan karbon reaktif, senyawa yang sangat tidak bagus untuk oli karena cenderung bergabung dengan oksigen sehingga menghasilkan acid (asam). Pada dasarnya, oli sintetis didesain untuk menghasilkan kinerja yang lebih efektif dibandingkan dengan oli mineral.

Kekentalan (Viskositas)
Kekentalan merupakan salah satu unsur kandungan oli paling rawan karena berkaitan dengan ketebalan oli atau seberapa besar resistensinya untuk mengalir. Kekentalan oli langsung berkaitan dengan sejauh mana oli berfungsi sebagai pelumas sekaligus pelindung benturan antar permukaan logam.
Oli harus mengalir ketika suhu mesin atau temperatur ambient. Mengalir secara cukup agar terjamin pasokannya ke komponen-komponen yang bergerak. Semakin kental oli, maka lapisan yang ditimbulkan menjadi lebih kental. Lapisan halus pada oli kental memberi kemampuan ekstra menyapu atau membersihkan permukaan logam yang terlumasi. Sebaliknya oli yang terlalu tebal akan memberi resitensi berlebih mengalirkan oli pada temperatur rendah sehingga mengganggu jalannya pelumasan ke komponen yang dibutuhkan. Untuk itu, oli harus memiliki kekentalan lebih tepat pada temperatur tertinggi atau temperatur terendah ketika mesin dioperasikan.
Dengan demikian, oli memiliki grade (derajat) tersendiri yang diatur oleh Society of Automotive Engineers (SAE). Bila pada kemasan oli tersebut tertera angka SAE 5W-30 berarti 5W (Winter) menunjukkan pada suhu dingin oli bekerja pada kekentalan 5 dan pada suhu terpanas akan bekerja pada kekentalan 30.
Tetapi yang terbaik adalah mengikuti viskositas sesuai permintaan mesin. Umumnya, mobil sekarang punya kekentalan lebih rendah dari 5W-30 . Karena mesin belakangan lebih sophisticated sehingga kerapatan antar komponen makin tipis dan juga banyak celah-celah kecil yang hanya bisa dilalui oleh oli encer. Tak baik menggunakan oli kental (20W-50) pada mesin seperti ini karena akan mengganggu debit aliran oli pada mesin dan butuh semprotan lebih tinggi.
Untuk mesin lebih tua, clearance bearing lebih besar sehingga mengizinkan pemakaian oli kental untuk menjaga tekanan oli normal dan menyediakan lapisan film cukup untuk bearing.
Sebagai contoh dibawah ini adalah tipe Viskositas dan ambien temperatur dalam derajat Celcius yang biasa digunakan sebagai standar oli di berbagai negara/kawasan.
5W-30 untuk cuaca dingin seperti di Swedia
10W-30 untuk iklim sedang seperti dikawasan Inggris
15W-30 untuk Cuaca panas seperti dikawasan Indonesia

Kualitas
Kualitas oli disimbolkan oleh API (American Petroleum Institute). Simbol terakhir SL mulai diperkenalkan 1 Juli 2001. Walau begitu, simbol makin baru tetap bisa dipakai untuk katagori sebelumnya. Seperti API SJ baik untuk SH, SG, SF dan seterusnya. Sebaliknya jika mesin kendaraan menuntut SJ maka tidak bisa menggunakan tipe SH karena mesin tidak akan mendapatkan proteksi maksimal sebab oli SH didesain untuk mesin yang lebih lama.
Ada dua tipe API, S (Service) atau bisa juga (S) diartikan Spark-plug ignition (pakai busi) untuk mobil MPV atau pikap bermesin bensin. C (Commercial) diaplikasikan pada truk heavy duty dan mesin diesel. Contohnya katagori C adalah CF, CF-2, CG-4. Bila menggunakan mesin diesel pastikan memakai katagori yang tepat karena oli mesin diesel berbeda dengan oli mesin bensin karena karakter diesel yang banyak menghasilkan kontaminasi jelaga sisa pembakaran lebih tinggi. Oli jenis ini memerlukan tambahan aditif dispersant dan detergent untuk menjaga oli tetap bersih
Sebagai tambahan, bila oli yang digunakan sudah tipe sintetik maka tidak perlu lagi diberikan bahan aditif lain karena justru akan mengurangi kireja mesin bahkan merusaknya.

API Service Rating
Untuk rating API service, dapat pula dirunut dari mesin-mesin keluaran lama. Namun, pada saat ini bisa juga dirunut dari katagori SF mengingat banyaknya katagori yang akan keluar.

API mesin bensin
SM (Current)
Diperkenalkan pada 2004. Ditujukan untuk semua jenis mesin bensin yang ada pada saat ini. Oli ini didesain untuk memberikan resistensi oksidasi yang lebih baik, menjaga temperatur, perlindungan lebih baik terhadap keausan, dan mengontrol deposit lebih baik.
SL (Current)
Merupakan katagori terakhir sampai saat ini. Diperkenalkan pada 1 Juni 2001. Oli ini didesain untuk menjaga temperatur dan mengontrol deposit lebih baik. Juga bisa mengkonsumsi oli lebih rendah. Beberapa oli ini juga cocok dengan spesifikasi terakhir ILSAC sebagai Energy Conserving. Untuk mesin generasi 2004 atau sebelumnya
SJ (Current) : Diperkenalkan untuk mesin generasi 2001 atau lebih tua
SH (Obsolete) : Untuk mesin generasi 1996 atau sebelumnya
SG (Obselete) : Untuk mesin generasi 1993 atau sebelumnya
SF (Obsolete) : Untuk mesin generasi 1988 atau sebelumnya

API mesin diesel

CJ-4
Diperkenalkan pada tahun 2006. Untuk mesin high speed, mesin 4-langkah yang didesain untuk memenuhi memenuhi standar emisi tahun 2007. Oli dengan kategori API CJ-4 memiliki kriteria performa lebih baik daripada yang dimiliki oleh oli-oli dengan kategori API CI-4 dengan CI-4 PLUS, CI-4, CH-4, CG-4 dan CF-4. Oli dengan kategori API CJ-4 juga mampu secara efektif melumasi mesin-mesin dengan kategori di bawahnya.

CI-4
Diperkenalkan sejak 5 September 2002. Untuk mesin high speed, four stroke engines yang didesain untuk memenuhi memenuhi standar emisi tahun 2004. Oli CI-4 diformulasikan menjaga durabilitas mesin dimana gas buangnya disirkulasi ulang. Digunakan untuk mesin yang meminta kandungan belerang/sulfur 0.5%. Bisa dipakai pada oli CD, CE, CF-4, CG-4 dan CH-4.

CH-4
Diperkenalkan sejak 1998. Untuk mesin high speed, four stroke engines yang didesain untuk memenuhi memenuhi standar emisi tahun 1998. . Digunakan untuk mesin yang meminta kandungan belerang/sulfur lebih besar 0.5%. Bisa dipakai pada oli CD, CE, CF-4, dan CG-4.

CG-4
Diperkenalkan sejak 1995. Untuk mesin kinerja sedang, high speed, four stroke engines. Digunakan untuk mesin yang meminta kandungan belerang/sulfur kurang 0.5%. Cocok untuk standar emisi 1994 Bisa dipakai pada oli CD, CE, dan CF-4.

CF-4
Diperkenalkan sejak 1990. Untuk mesin high speed, four stroke engines, naturally aspirated dan mesin turbocharger. Bisa dipakai pada oli CD, dan CE.

CF-2
Diperkenalkan sejak 1994. Untuk mesin kinerja sedang, two stroke engines. Bisa dipakai pada oli CD-II.

CF
Diperkenalkan sejak 1994. Untuk mesin off road, indirect injected dan beberapa mesin yang memakai bahan bakar dengan kandungan belerang/sulfur diatas 0.5%. Bisa mengganti pada oli CD.

(wikipedia.com)

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2008-06-14T00:53:00.000-07:00

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