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ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.-legal legal light-duty vehicles from 1984 to present. Speed increase.

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EPA trends report sees record levels of average new vehicle fuel economy and CO2 emissions for MY 2012; role of new gasoline vehicle technologies

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EPA projects advanced transmissions (6+ speeds and CVTs), gasoline direct injection (GDI) systems, and turbocharged engines will be installed on at least 15% of all MY 2013 vehicles. MY 2012 adjusted fuel economy is 23.6 Preliminary MY 2013 adjusted values are 370 g/mi CO 2 emissions and 24.0 Click to enlarge.

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GM: new Sierra 5.3L V-8 EcoTec3 highway fuel economy tops Ford EcoBoost V-6

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In addition to highway fuel economy estimates that are 2 mpg higher than a 2013 Ford V8 pickup equipped with a 5.0L 2WD Pickup truck fuel economy comparisons. In addition to highway fuel economy estimates that are 2 mpg higher than a 2013 Ford V8 pickup equipped with a 5.0L Power (hp).

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Global Fuel Economy Initiative launches second 3-year campaign; ICCT joins partnership

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The Global Fuel Economy Initiative ( GFEI ) ( earlier post ) launched its second three-year effort to improve vehicle fuel economy around the world at the International Transport Forum in Leipzig. —“Global Fuel Economy Initiative Plan of Action 2012-2015. Earlier post.). Policy support.

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Light duty RCCI can deliver engine-out Tier 2 Bin 5 NOx; potential for 52% gross indicated efficiency

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Rolf Reitz of the University of Wisconsin found that reactivity controlled compression ignition (RCCI) ( earlier post ) in a light-duty engine can meet Tier 2 Bin 5 NO x levels without aftertreatment, while offering a 4% improvement in fuel consumption and 7.3% —Kokjohn and Reitz. Sage L Kokjohn and Rolf D.

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Study finds recent achieved CAFE performance outpacing levels projected to be achieved by NHTSA

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Average monthly and model year fleet-wide achieved CAFE performance levels (light purple) versus NHTSA projected achieved CAFE levels (blue) for model years 2008 through 2016. Schoettle and Sivak 2013. Additionally, they found, achieved CAFE performance has consistently increased annually from model year 2008 through model year 2013.

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UMTRI study finds total cost of ownership of diesels in US often much less than gasoline counterparts

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Sales of light-duty vehicles with alternative powertrains in 2014 was a mix of increases and decreases over 2013 sales. The report— Total Cost of Ownership: A Diesel Versus Gasoline Comparison (2012-2013) —was underwritten by Robert Bosch LLC. Alternative powertrain sales. Belzowski 2015. Click to enlarge.

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