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EPA’s annual automotive trends report shows slight increase in fuel economy from MY2017 to MY2018

Green Car Congress

In the US, Model Year (MY) 2018 vehicle fuel economy was 25.1 Since MY 2004, CO 2 emissions have decreased 23%, or 108 g/mi, and fuel economy has increased 30%, or 5.8 Average estimated real-world CO 2 emissions are projected to fall 6 g/mi to 346 g/mi and fuel economy is projected to increase 0.4

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EPA GHG Inventory shows US GHG down 1.7% y-o-y in 2019, down 13% from 2005

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While an increased demand for travel has led to increasing CO 2 emissions since 1990, improvements in average new vehicle fuel economy since 2005 has slowed the rate of increase of CO 2 emissions. The transportation sector saw some of the biggest reductions where gasoline use decreased by 13% and jet fuel use decreased by 38%.

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Toyota implements Atkinson cycle in non-hybrid ESTEC engine; up to 38% thermal efficiency and improved fuel economy

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Further, at low loads, the ESTEC engine improves fuel consumption by 11% in the JC08 mode. Improving the vehicle fuel economy is a must due to the climate change and energy issues. In addition, the improvement of fundamental technologies such as low friction and valve train system need to be looked at.

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Hyundai Motor Group, Aramco and KAUST collaborate on new e-fuel for novel combustion system

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Unlike conventional fuel manufacturing, e-fuels are synthesized from green hydrogen—produced by water electrolysis using renewable electricity—and carbon dioxide, resulting in 80% lower lifecycle emissions. The tests will be conducted by researchers in the Clean Combustion Research Center (CCRC) at KAUST.

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Study: Cash-for-Clunkers Programs Should Use Fuel Economy Rather Than Age to Maximize GHG Reductions

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Cash for Clunkers”) program could maximize greenhouse gas emissions savings by using fuel-economy based eligibility requirements rather than age-based requirements. A minimum age restriction will inadvertently exclude newer, low fuel economy vehicles from participation in the program. Allan et al.

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GFEI report concludes 50% improvement in average fuel economy of entire global light duty fleet by 2050 is achievable; importance of the regulatory and fiscal environments

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US NRC panel’s summary estimates of the potential reduction in petroleum consumption by 2035 for vehicle powertrain types assuming that the entire potential of these technologies is used to improve fuel economy rather than performance. This is equivalent to increasing fuel economy from about 30 to about 60 MPG, from 12.5

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NHTSA issues Environmental Impact Statement scoping notice for MY 2022-2025 CAFE standards; seeking comments on “preferred alternative”

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Now, as part of its own MY 2022-2025 fuel economy standards process, NHTSA has issued its Notice of Intent to Prepare an Environmental Impact Statement (EIS) for Model Year 2022–2025 Corporate Average Fuel Economy (CAFE) Standards. mpg in MY 2021. Those 2022-2025 standards were “augural”—i.e.,

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