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DOE proposes revising procedures for calculating petroleum-equivalent fuel economy of EVs for use in CAFE calculations

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The US Department of Energy (DOE) is proposing a significant revision in its procedures for calculating a value for the petroleum-equivalent fuel economy of EVs for use in the Corporate Average Fuel Economy (CAFE) program administered by the Department of Transportation (DOT). Background. Proposed PEF.

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EPA Trends on EVs and PHEVs; beginning of a “measurable and meaningful impact” on new vehicle fuel economy and emissions

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The agency’s reasoning was that since alternative fuel vehicle production has generally been less than 0.1% of total vehicle production until very recently, the impact of excluding alternative fuel vehicles was negligible. Fuel economy average for the US fleet, per the Trends report, is 24.1

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Studies highlight effects of different gasoline components on fuel economy, combustion and emissions

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Researchers at Jilin University (China) have investigated the effect of gasoline components on fuel economy, combustion and emissions in a GDI (gasoline-direct-injection) engine. The team subsequently followed up this first study with a second, exploring the effects in a PFI (port-fuel-injection) engine. —Han et al.

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Mack Granite CNG truck exclusively equipped with Allison’s 4500 Rugged Duty Series transmission

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When Mack set out to develop a vehicle for refuse collection customers seeking an alternative fuel solution, they were able to pair the proven 4500 RDS transmission with a 320-horsepower Cummins L9N engine. The 4500 RDS fully automatic transmission has been offered in the Mack Granite diesel model for more than 20 years.

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EPA annual trends report finds new vehicle fuel economy at record 24.1 mpg; new powertrain technologies rapidly gaining share

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EPA released the latest edition of its annual report on trends in CO 2 emissions, fuel economy and powertrain technology for new personal vehicles in the US. Fuel economy has now increased in eight of the last nine years; average carbon dioxide emissions are also at a record low of 369 g/mile in model year 2013.

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EIA: China promoting both fuel efficiency and alternative-fuel vehicles to curb growing oil use

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To counter this trend triggered by China’s rapid motorization, the Chinese government is adopting a broad range of policies, including improvements in the fuel economy of new vehicles and the promotion of alternative-fuel vehicles, EIA notes. China vehicle sales and gasoline consumption. Source: EIA. Click to enlarge.

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NHTSA proposes updated CAFE standards for LDVs, fuel-efficiency standards for HD pickups and vans

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The proposal would also drive fuel efficiency improvements for heavy-duty pickup trucks and work vans. NHTSA’s proposed fuel economy standards complement and align with the Environmental Protection Agency’s recently proposed emissions standards for similar vehicle fleets.

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