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NASA Glenn develops automated flywheel pulse-and-glide system; improving fuel economy up to 40-100%

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Innovators at NASA’s Glenn Research Center have developed an automated pulse-and-glide technique using a flywheel energy storage system for on-road vehicles; the technology, which NASA Glenn says can improve fuel economy over existing internal combustion or battery hybrid systems by 40-100%, is available for licensing.

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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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NREL study finds 2nd-generation diesel hybrid delivery vans show significant gains in fuel economy over conventional vans

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Laboratory and in-use fuel economy results Source: NREL. The NREL team collected and analyzed in-service fuel economy, maintenance, and other vehicle performance data on 11 hybrid (P100H) and 11 conventional diesel (P100D) step vans operated by the United Parcel Service (UPS) in Minneapolis. Click to enlarge.

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2013 Honda Fit EV receives EPA fuel economy rating of 118 MPGe; highest yet

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City and highway cycle fuel-economy ratings are 132 and 105 MPGe, respectively. The FIT EV’s fuel consumption rating is 29 kWh per 100 miles; EPA-rated annual fuel cost is $500. Honda Fit EV Efficiency Comparison. EPA Label Range. EPA Combined MPGe. EPA Combined kWh/100m. Battery Capacity. Honda Fit EV.

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NREL report on electric bus demo at Foothill Transit finds Proterra fuel economy >8x higher than CNG on same line

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The CNG buses had an average fuel economy of 3.89 However, because Foothill Transit operates its BEB and CNG bus fleets differently, the efficiency results presented are not an apples-to-apples comparison. An apples-to-apples comparison of fuel cost—i.e., mpgge, equating to 4.34 gge for CNG.

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EPA, DOT Propose New Fuel Economy Labels; Addressing GHG Emissions, Fuel Consumption and Advanced Technology Vehicles

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The US Department of Transportation (DOT) and the US Environmental Protection Agency (EPA) are jointly proposing changes to the fuel economy labels consumers see on the window of new vehicles in dealer showrooms. A sample of the second proposed label for an extended range electric vehicle. Click to enlarge.

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Volkswagen Millerized 1.5 TSI ACT BlueMotion gasoline engine offers diesel-like fuel economy; derivatives may be applied in hybrid systems

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Volkswagen has developed and deployed a gasoline engine that offers diesel-like fuel economy but is significantly cheaper to buy. TSI ACT BlueMotion delivers 96 kW / 130 PS with combined fuel consumption of 4.8 Meanwhile, the mixture also benefits from increased expansion in the knock-limited range. l/100 km (49 mpg US).