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

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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 drop in fuel economy due to traveling 80 mph rather than 70 mph.

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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 Fuel economy.

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CPT, TU Wien study finds 48V mild diesel hybrid cuts engine-out NOx 9%, 4.5% fuel economy improvement

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A joint study by Controlled Power Technologies (CPT) and Austria’s Technische Universität Wien (TU Wien) into 48V diesel mild hybrid technology verified a 9% reduction of NO x in raw engine-out emissions, while retaining the fuel economy and CO 2 benefits of diesel engine technology. —Paul Bloore.

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Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

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The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. The particle number count under those conditions increased by more than an order of magnitude in comparison to DPF-out particle concentrations. Credit: ACS, Thiruvengadam et al. Click to enlarge.

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Transonic Looking at Final Funding Round This Year, Production Deployment of Supercritical Fuel System in 2014; 50-75% Improvement in Engine Fuel Economy

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The use of a supercritical fuel charge enables very fast and complete combustion with minimized thermal losses. The chart shows heat release from a standard diesel combustion cycle (solid black line), overlaid with the heat release from a TSCi cycle (dashed blue line). As a comparison, the 2010 Prius delivers 51 mpg US (4.6

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Mercedes brings lean-burn, stratified BlueDirect to CLA-Class for 7% boost in fuel economy; new all-wheel A-Class diesels

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liter, four-cylinder engine of the new CLA 250 is a member of the BlueDIRECT family of gasoline engines, and was first applied in combination with exhaust-gas turbocharging and external high-pressure exhaust gas recirculation in the E 250 Coupé introduced last year ( earlier post ). (It Source: Vent et al. Click to enlarge.

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GM uses lightweight, advanced materials to reduce weight on 2015 Colorado pickup

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Mass comparison, 4x4 crew cabs. The 2015 Chevrolet Colorado uses engineering techniques and lightweight materials to create fuel-efficient pickup capability in a mass-efficient mid-size package. Chevrolet expects EPA fuel economy estimates for Colorado this summer. Based on current GM testing, the standard 2.5L

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