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Study Assesses Product Attribute Trade-offs and Technological Progress; Meeting Proposed Obama Fuel Economy Standards Will Require Downsizing and Change in Fleet Mix

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Changes in the attributes (clockwise from upper left, weight, power, fuel economy and torque) of the Honda Accord over time as an example of fleet trends in the US. In contrast, fuel economy actually increased by 15% during that period. Knittel, 2009. Click to enlarge. Knittel, Christopher R.

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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. Researchers are seeking new effective methods for knock suppression and subsequent fuel economy improvement. They flexibly controlled the PFI to DI fuel ratios.

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

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Ohio State University. Iowa State University. University of Pittsburgh. Rutgers, The State University of New Jersey. Penn State University Park. University of Washington, Seattle. West Virginia University Research Corporation. The Research Foundation for the SUNY Stony Brook University.

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Daimler Trucks NA SuperTruck achieves 115% freight efficiency improvement over 2009 baseline; 50.2% engine BTE

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The Freightliner SuperTruck uses a downsized and downsped 10.7-liter This reduces friction, and increases efficiency and fuel economy. DTNA began work on the SuperTruck program in 2010 together with Detroit and other partners, including national labs, universities and suppliers. DTNA SuperTruck technology elements. Powertrain.

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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

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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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Promising Delphi 1st-gen Gasoline Direct Injection Compression Ignition engine meeting ultra fuel efficient program targets

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In 2010, The US Department of Energy (DOE) selected Delphi, along with partners Hyundai America Technical Center, Inc (HATCI); Wisconsin Engine Research Consultants (WERC); and the University of Wisconsin-Madison (UW) for a $7.48-million Earlier post , earlier post.). Earlier post.) —Sellnau et al. 2014-01-1300. Click to enlarge.

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Exploring gasoline-range naphtha as a low-soot, low-NOx alternative compression ignition fuel

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A number of papers from Kalghatgi and his colleagues—and now other groups, including Tsinghua University in China and the Eindhoven University of Technology—have been published recently, exploring different aspects of this approach. Based on these engine studies, they installed a downsized four-cylinder 1.6-liter

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