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New Mahle piston ring coating for high-output GTDI engines; chromium nitride using high-velocity oxygen fuel process

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Under development since 2011 at Mahle’s thermal spray development labs in Michigan, the new process initially was designed for high-output GTDI engines currently in production by two US domestic automakers. Mahle has developed a new thermal spray coating for modern high-output direct-injection turbocharged gasoline engines (GTDI).

Engine 150
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Cummins ETHOS 2.8L optimized E-85 engine demonstrates 50-80% reduction in CO2 emissions in medium-duty truck

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For the CEC project, approved in 2011, Cummins originally envisioned adapting a medium-duty engine specifically to use E85 fuel, reducing the engine size from 6.7L For the CEC project, approved in 2011, Cummins originally envisioned adapting a medium-duty engine specifically to use E85 fuel, reducing the engine size from 6.7L

Engine 319
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Volvo Car Corporation introducing start/stop technology in cars with automatic transmissions

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Beginning early in September 2011, the six-speed automatic transmission with start/stop becomes available in the D3 versions of four Volvo models: S60, V60, V70 and S80. An electric pump keeps oil pressure up in the automatic gearbox while the engine is stopped. Downsized five-cylinder engine.

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DOE awards Envera $2.8M to develop and to test efficient variable compression ratio engine

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VCR 4-cylinder engine (projected data) from a 2011 report by Envera. The new engine will achieve high efficiency using the Atkinson Cycle with an 18:1 compression ratio, combined with aggressive engine downsizing. Engine downsizing is a key tool in improving fuel economy. Brake specific fuel consumption (BSFC) curves for a 5.7L

Engine 207
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Audi using supplementary port fuel injection to address particulates from gasoline direct injection

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GDI technology provides fuel efficiency benefits from charge air cooling, more facile turbocharging, and the downsizing that these permit. Thomas Heiduk, Michael Kuhn, Maximilian Stichlmeir, Florian Unselt (2011) “The new 1.8L Particle number vs. particle mass for various LDV engine technologies. Source: MECA, Ford Motor Company.

Gasoline 304
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IEA: carbon intensity of global energy supply has barely changed in last 20 years; “window of opportunity in transport”

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The global energy supply became 6% cleaner from 1971 to 1990,in response to the oil shocks of the 1970s. million, up 43% from 2011. Engine downsizing and weight reduction represent around 30% of that potential collectively. Around half of coal-fired power plants built in 2011 use inefficient technologies. tCO 2 /TJ (2.39

Carbon 265
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EPA official: the future of the internal combustion engine is bright and clear

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Hugh Blaxill, Managing Director of Mahle Powertrain, for example, said that the current surge in volume of 4-cylinder engines along with the rapid ramp in direct injection and variable valvetrain technologies across all manufacturers marks the start of a sharp increase in downsized applications and hybrid powertrains.