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Downspeeding and supercharging with transmission optimization can deliver fuel economy improvement over downspeeding and turbocharging

Green Car Congress

Researchers from Southwest Research Institute (SwRI) and Eaton have demonstrated the application of downspeeding and supercharging a diesel vehicle, in conjunction with optimizing transmission gear ratios and the shift schedule, to deliver a greater improvement in fuel economy than a downsped and turbocharged configuration.

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Eaton Highlights Range of New Products to Reduce Fuel Consumption and Emissions

Green Car Congress

The all-new electronic limited slip differential, Ultra Posi is designed for front and rear-wheel drive vehicles, performs comparably to four-wheel-drive and all-wheel-drive systems and provides up to a 10% savings in fuel economy, Eaton says. —Chris Ostrander, vice president and general manager - Eaton Torque Controls.

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CALSTART survey of major auto suppliers finds 70% don’t want US to change CAFE targets; split on amount of electrification needed

Green Car Congress

Major automotive suppliers see national fuel economy standards as important for long-term planning and investment and don’t want to see them altered by US policymakers, according to a first-of-its-kind industry survey commissioned by CALSTART and conducted by Ricardo Energy & Environment.

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US DOE awards $8.4M to 4 projects to improve engine and powertrain efficiency

Green Car Congress

The projects will focus on new innovations that achieve breakthrough thermal efficiencies while meeting federal emission standards for passenger vehicles—cars and light trucks, as well as commercial vehicles, including long-haul tractor trailers. Eaton Corporation, $2.5 MAHLE Powertrain LLC, $2.5 million.

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IEA: improving efficiency of road-freight transport critical to reduce oil-demand growth; three areas of focus

Green Car Congress

Yet the growth in oil demand from trucks has outpaced all other sectors—including passenger cars, aviation, industry and petrochemical feedstocks—since 2000 and contributed 40% to global oil demand growth, a similar contribution as cars. The trucking sector can improve logistics and systems operations.

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Does supercharging beat turbocharging?

Green Cars News

Downspeeding and supercharging while optimising the transmission; or downspeeding and turbocharging – which can offer the greatest fuel economy improvement? The Southwest Research Institute and Eaton examined the issue. They showed that supercharging with downsizing can offer fuel economy gains by around 12.2

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Details on Nissan’s I3 1.2L supercharged direct-injection gasoline engine

Green Car Congress

In 2011, Nissan launched a version of the Micra city car equipped with a new supercharged gasoline direct-injection engine (HR12DDR). A supercharger with a magnetic clutch compensates for the disadvantage of the small displacement engine with the Miller cycle without sacrificing fuel economy. Earlier post.).

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