Coated bearings particularly help vehicles with stop start

Coated bearings particularly help vehicles with stop start

Chafing against engine friction

cheap Canada Goose Friction is enemy No. 1 for powertrain engineers striving to meet rising fuel economy standards. cheap Canada Goose

canada goose deals “As engines get smaller, eliminating friction becomes even more important,” says Dave Lancaster, a General Motors technical fellow who works at the automaker’s powertrain engineering operations in suburban Detroit. “Every component in every engine is canadian goose jacket designed with all the analytical tools we have to reduce friction.” canada goose deals

canada goose Lower friction enables engines to efficiently produce more horsepower per liter of displacement. And by re engineering parts at modest cost, automakers can boost mileage without the massive investment of redesigning an engine. In the 2025 model year, each automaker’s fleet miles per gallon must reach 54.5. canada goose

Canada Goose Outlet Engineers have made significant strides reducing friction. A GM four cylinder engine from the early 1980s, called the Iron Duke, generated about 45 percent more friction than GM’s current Ecotech four cylinder even though the Ecotech engine has more moving parts, the automaker says. Canada Goose Outlet

canada goose black friday sale Now, to uk canada goose further reduce friction, low tech, off the shelf commodity parts such as piston rings, Canada Goose Coats On Sale engine bearings, seals and oil pumps are evolving Canada Goose sale into premium hardware. canada goose black friday sale

Canada Goose Jackets Suppliers are playing a big role. “Certainly there are many more areas where we can improve efficiency,” says Wolfgang Rein, Mahle North America’s senior vice president of r for engine systems and components. “Every small improvement counts when it comes to friction.” Mahle is a leading piston and bearing manufacturer. Canada Goose Jackets

Canada Goose online Here are five main engine components on which automakers and suppliers are working to reduce engine friction. Canada Goose online

buy canada goose jacket What: Smaller bearing shells with special coatings. And engine oil is getting thinner and more slippery. Suppliers such as Federal Mogul Corp. have developed special coatings that further reduce friction. Federal Mogul ‘s IROX coating for engine bearings, a 2013 Automotive News PACE Award winner, is a polymer coating that can reduce friction by up to 50 percent compared with older, larger bearings without coating. Coated bearings particularly help vehicles with stop start systems, which increase wear and tear on bearings. The redesigned engine in the 2014 Chevrolet Corvette uses canada goose coats on sale Federal Mogul’s IROX coating. buy canada goose jacket

canada goose coats What: Eliminating the balance canada goose uk black friday shaft, used to cancel engine vibrationHow it reduces Canada Goose Jackets friction: If a Ford innovation catches on, the balance shaft cheap Canada Goose could get canada goose the shaft in the coming wave of three cylinder engines. Ford canada goose black friday sale has eliminated the power robbing balance shaft in the 1.0 liter, three cylinder engine for the Fiesta coming this fall. To reduce vibration, Ford channels the engine’s shaking forces in a different direction buy canada goose jacket cheap with patented motor mounts coupled with precisely placed weights on the engine pulley and flywheel. Ford says eliminating the balance shaft reduces engine friction by about 6 percent. Four cylinder engines with balance shafts are now being fitted with roller bearings, canada goose uk shop which reduce friction by about 2 percent. canada goose coats

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Canada Goose sale What: Low friction valvetrains. Engineers are polishing and coating tappets, the bucket shaped part underneath the cam that activates the valves. General Motors has reduced the size of timing chains and switched to slippery chain guides on its overhead cam engines. On pushrod engines, engineers have developed rocker arms with low friction rollers, which activate the valves. Canada Goose sale

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canada goose coats on sale What: Pistons with smaller skirts, special coatings and low tension canada goose clearance sale ringsHow they reduce friction: Pistons account for more than a quarter of the energy lost to friction in an engine, Ford Motor Co. says. Engine designers and suppliers are attacking piston friction by reducing the size of the skirt, the section below the rings, and by coating it with cheap canada goose uk ceramic or polymer. Coatings enable the piston to slide easier up and down the bores. Some of the coatings used by Mahle and other piston suppliers include graphite, carbon fiber and molybdenum disulfide. Mahle’s latest piston rings exert about 50 percent less pressure against the cylinder bore than rings from just a few years ago. Smoother, coated cylinder bore surfaces are also reducing piston friction. canada goose coats on sale

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canada goose clearance sale What: Low Canada Goose Parka friction crankshaft seals. The SKF buy canada goose jacket Low Friction Engine Seal uses sealing tips made of elastomer, a highly flexible polymer. Suppliers also make Teflon seals for use in engines in which an oil film is unneeded on the end of the crankshaft. Low friction seals reduce friction more than 50 percent from the old style, spring loaded seals. Low friction seals are being introduced with new engines. BMW has embraced the technology as part of its EfficientDynamics program and uses low friction seals in all canada goose outlet of its engines. canada goose clearance sale

canada goose clearance ATTENTION COMMENTERS: Automotive News has monitored a significant increase in the number of personal attacks and abusive comments on our site. We encourage our readers canada goose store to voice their opinions and argue their points. We expect disagreement. We do not expect our readers to turn on each other. If we see repeated behavior, we will ban the Canada Goose Outlet commenter. Please help us canada goose clearance maintain a civil level of discourse uk canada goose outlet canada goose clearance.

Yazar: Admin

Yayınlanma Tarihi: 16 Mart 2014

Kategori: Genel

Görüntüleme: 115 Defa


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