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EPA trends report sees record levels of average new vehicle fuel economy and CO2 emissions for MY 2012; role of new gasoline vehicle technologies

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EPA projects advanced transmissions (6+ speeds and CVTs), gasoline direct injection (GDI) systems, and turbocharged engines will be installed on at least 15% of all MY 2013 vehicles. The majority of the emissions and fuel savings from current vehicles, EPA noted, is due to new gasoline vehicle technologies. mpg, or 22%.

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UGA study finds black carbon aerosols from GDI engines will worsen public health, climate; need for GPFs

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The gasoline direct injection (GDI) engine is one of the most prominent technologies car manufacturers adopted to achieve the fuel economy and carbon dioxide emission goals established in 2012 by the US Environmental Protection Agency. will be equipped with GDI engines by 2025. —Neyestani et al.

Climate 348
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Study finds hitting thermodynamic sweet spot in dilute, boosted gasoline engines has potential for fuel economy gains between 23% and 58%

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Dennis Assanis at the University of Michigan suggests that accessing the “thermodynamic sweet spot” in high-efficiency, dilute, boosted gasoline engines has the potential for vehicle fuel economy gains between 23% and 58%. Their paper is published in the International Journal of Engine Research. Martz and Dennis N.

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2012 Hyundai Accent first to receive 1.6L GDI Gamma engine; 18% improvement in highway fuel economy to 40 mpg

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Hyundai Motor America introduced the all-new 2012 Accent at the New York International Auto Show; this marks the US debut of the latest version of the popular subcompact sedan and the new Accent five-door. The 2012 Accent is slated to hit dealerships this summer. The 2012 Accent is the first vehicle to receive the all-new 1.6-liter

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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. Data for MY 2011 are final; data for MY 2012 are preliminary and based on projected vehicle production values provided to EPA by manufacturers. Preliminary projections for MY 2012 are 374 g/mi CO 2 emissions and 23.8 Source: EPA. Click to enlarge.

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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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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. A compact, quiet-running 650cc 2-cylinder engine replaces the previous 2.4L The smaller engine will improve fuel economy, however.