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Cummins announces fuel economy improvements for heavy-duty lineup

Green Car Congress

For the most fuel-conscious fleets, the ISX15 is available with ratings of 400 hp to 450 hp, which deliver peak torque at 1000 rpm. Since 2010, Cummins has made numerous improvements to the ISX15 to deliver up to 7% better fuel efficiency; customers moving from a pre-2010 engine could experience up to 10% improvement.

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Study finds that increased vehicle travel and decreased occupancy have undercut the impact of improving fuel economy over last 40 years

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From 1970 to 2010, vehicle distance travelled in the US increased by 155% (from 1.674 trillion km to 4.260 trillion km); however, because vehicle load (i.e., Sivak found that while the vehicle fuel economy of the entire light-duty fleet improved by 40% (from 13 mpg US to 21.6 occupants carried) decreased by 27% (from 1.9

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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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With alternative fuel vehicles now approaching 1% of new vehicle production, however, they are in fact beginning to have a “ measurable and meaningful impact ” on overall new vehicle fuel economy and CO 2 emissions. In the analysis, EPA uses overall fuel economy in mpg equivalent (mpge) and tailpipe CO 2 emission values.

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2011 edition of EPA Fuel Economy Trends report shows several advanced powertrain technologies making significant gains

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In terms of market share, gasoline direct injection doubled in MY 2010 (from 4.2% for MY 2010, with almost a doubling from MY 2009 (2.3%). Fuel economy improvements for the hybrid vehicles vary considerably from 5-10% for the larger, luxury hybrid vehicles to more than 40%. in MY 2010, but up from 0.5% in MY 2009.

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EPA annual report on CO2, fuel economy and technology trends finds 2012 heading for all-time best; rapid adoption of new technologies

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Adjusted CO 2 emissions and adjusted fuel economy, MY 1975-2011. The report finds that CO 2 emissions rates and fuel economy values reflect a very favorable multi-year trend beginning in MY 2005. The fleet-wide average real world MY 2011 personal vehicle CO 2 emissions value is 398 g/mi and average fuel economy is 22.4

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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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UPS updates 125 Workhorse E-GEN series hybrid electric step vans with smaller genset engine for better fuel economy

Green Car Congress

UPS announced an update to 125 Workhorse E-GEN series hybrid electric delivery trucks that improve fuel economy as part of the company’s broader Rolling Laboratory approach. The smaller engine will improve fuel economy, however. AMP Electric Vehicles went public in 2010.