2013 Alternative Fuels Downsizing Fuel Economy 
Green Car Congress
APRIL 22, 2013
Use of a variable compression ratio (VCR) could be one technology approach to reducing fuel consumption in highly boosted (e.g., downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fuel economy compared to operating an engine with fixed compression ratio.
Green Car Congress
APRIL 2, 2010
Yesterday, the US Environmental Protection Agency (EPA) and the National High Traffic Safety Administration (NHTSA) jointly established increasingly stringent greenhouse gas emission standards under the Clean Air Act for 2012 through 2016 model-year vehicles and fuel economy standards under the Corporate Average Fuel Economy program, respectively.
Green Car Congress
OCTOBER 8, 2015
The additional control of compressed air for transient performance provided by Cobra means that we can purge diesel particulate filters and other forms of exhaust after-treatment for NO x reduction and, most importantly, without compromising fuel economy. Phil Bush, technology manager at Eminox.
Green Car Congress
MAY 17, 2013
In a policy analysis in the ACS journal Environmental Science & Technology , researchers from the Universities of Cambridge, Exeter and Oxford argue that, due to the increased emphasis on alternative fuels with drastically differing energy densities, vehicle efficiency should be evaluated based on energy rather than volume.
Tony Karrer Delicious EVdriven
APRIL 21, 2009
Hybrid Sonata model year 2011, possible PHEV version in 2013. 2/12/07 GM is aggressively pursuing plug-in hybrids "because of the tremendous potential to significantly increase fuel economy," according to spokesman Brian Corbett. It also may have a rheostat so drivers can select a performance or fuel-economy mode.
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