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CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

Green Car Congress

The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). The study used two fuels—an E10 and E15. SULEV30, ULEV50, ULEV70, and ULEV125).

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NREL study finds gasoline hybrid delivery trucks substantially reduce emissions and beat or maintain fuel economy compared to diesel vehicles

Green Car Congress

Criteria emissions by drive cycle. The team found that the gasoline hybrid electric (gHEV) trucks produced substantially reduced tailpipe emissions during all drive cycles tested in the laboratory when compared to conventional diesel vehicles. Influence of route kinetic intensity on fuel economy. Source: Barnitt 2011.

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UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

Green Car Congress

Their paper is published in the ACS journal Energy & Fuels. Regulated emissions for all test fuels over the cold-start and hot-start LA92 cycles. The emissions of CO 2 for the high-aromatics E10 were higher than the Tier 3 E10, E30, and E78 blends. The study found that higher ethanol blends—i.e., —Yang et al.

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NREL Study Finds UPS First-Generation Hybrid Vans Deliver Almost 29% Greater Fuel Economy

Green Car Congress

UPS van fuel economy comparison. UPS’ first-generation diesel hybrid delivery vans improved the on-road fuel economy by 28.9% The 12-month average fuel economy for the P70 hybrid vans is 13.1 The 12-month average fuel economy for the P70 hybrid vans is 13.1 Source: Lammert 2009.

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ICCT update finds real-world vehicle fuel economy gap continues to widen in Europe to 40%

Green Car Congress

The gap between official fuel-economy figures and the real world for new cars in the EU has reached 40 per cent, according to the latest update by the International Council on Clean Transportation (ICCT) to its on-going research into in-use vehicle fuel efficiency and CO 2 emissions. Earlier post.). Source: ICCT.

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Seventh heaven in the battle against car emissions

Green Cars News

For the seventh successive year, car manufacturers showed they are winning the battle against emissions – by decreasing carbon dioxide emissions and increasing fuel economy.

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Study finds that replacement programs that reduce vehicle lifetime can result in increased lifecycle CO2 emissions

Green Car Congress

Effects of changes in the average lifespan of ordinary passenger cars newly registered between 1990-2000 on total induced CO 2 emissions in 2000. Conversely, encouraging shortened vehicle lifetime via vehicle replacement schemes can result in higher total-induced greenhouse gas emissions, the authors found. Credit: ACS, Kagawa et al.

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