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

Green Car Congress

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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IEA: improving efficiency of road-freight transport critical to reduce oil-demand growth; three areas of focus

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This includes near-term opportunities like using Global Positioning System to optimize truck routing, as well as real-time feedback devices that monitor the on-road fuel economy of trucks. Achieving stronger cuts in fuel use, carbon dioxide and pollutant emissions requires the use of hybrids and zero emission trucks.

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Tsinghua studies on alcohol-gasoline dual fuel engines show fuel efficiency and particle number benefits

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Researchers at Tsinghua University in China are studying the effects of Dual-Fuel Spark Ignition (DFSI) combustion fueled with different alcohols and gasoline. However, engine knock with high pressure rise and pressure oscillation caused by end-gas auto-ignition is still the big obstacle for deep improvement of fuel consumption.

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DOE to award up to $137M for SuperTruck II, Vehicle Technology Office programs

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Volvo Technology of America LLC will develop and demonstrate a tractor trailer combination with lightweight cab that achieves the freight efficiency goal using alternative engine designs and a variety of system technologies. Ohio State University. Iowa State University. University of Pittsburgh. Description. 1,250,000.

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U Toronto LCA suggests that with CNG as primary vehicle energy source, EVs best targeted at non-attainment areas

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They used GREET 1 fuel-cycle and GREET 2 vehicle-cycle models to determine GHG (CO 2 , CH 4 , and N 2 O) and criteria air contaminant (CAC) (PM 2.5 , VOC, NO x , and SO x ) emissions. CNG HEV energy use and CO 2 emissions are both 30% lower than those of the CNG CV, because of fuel economy differences. Credit: ACS, Luk et al.

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CMU study concludes alt fuel vehicle incentives for OEMs result in increased fleet gasoline consumption and emissions

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A study by researchers at Carnegie Mellon University has concluded that regulatory incentives for OEMs for alternative fuel vehicles (AFVs) intended to encourage a technology transition in the transportation fleet result in increased fleet-wide gasoline consumption and emissions. —Jenn et al. Alan Jenn, Inês M.

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NRC report finds Federal analysis to set LD CAFE and GHG standards generally of high quality; some technologies and issues should be re-examined

Green Car Congress

The analysis used by federal agencies to set standards for fuel economy (CAFE) and greenhouse gas emissions for new US light-duty vehicles from 2017 to 2025 was thorough and of high caliber overall, according to a new report from the National Research Council. UMTRI Survey: US drivers want better fuel economy, don’t care how.

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