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Study finds highly-turbocharged alcohol-fueled DISI engines could be more efficient than diesels

Green Car Congress

Highly turbocharged alcohol-fueled direct-injection spark-ignition (DISI) engines operated at a high compression ratio could be as or more efficient than diesel engines while also providing advantages of lower vehicle cost, lower emissions and higher power, according to a recent modeling study by Leslie Bromberg and Daniel Cohn at MIT.

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Independent testing shows 21.2% reduction in fuel consumption with XL Hybrids retrofit system

Green Car Congress

XLH engineers have already designed the next-generation release, in which the battery pack is downsized to 1.5 XL Hybrids was founded by MIT alumni and is based in Boston. This year, the company will release between 30 to 50 fleet trials, Ashton told Green Car Congress , using the 2012 system. kWh, Ashton said. Both the 2.0

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Former CEO of American Electric Power Dies at 94

Cars That Think

He earned a bachelor's degree in electrical engineering from the Virginia Polytechnic Institute, now Virginia Tech, and received a master's degree in industrial management as a Sloan Fellow at MIT. DeWitt downsized his operations after an economic recession hit the United States in 1975. He closed the business in 2018.

Power 98
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Ford E85 Direct Injection Boosting Study: A Less Expensive Alternative to Diesel

Green Car Congress

Proposed by John Heywood and colleagues at MIT in 2005, the basic premise of E85 boosting is that ethanol (or other lower alcohols) suppresses knock due to the large evaporative cooling effect it has on the air-fuel mixture when injected directly into the cylinder, supplemented by ethanol’s inherent high octane number. Earlier post.)

Diesel 170
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Former Commerce and Transportation Secretary Norman Mineta urges technology neutral policies in reaching proposed CAFE standards

Green Car Congress

Mineta cited a 2008 well-to-wheel comparison of different vehicle technologies by the MIT Electric Vehicle Team that ranked electric vehicles, diesel and turbocharged gasoline engine vehicles within a 10–15% performance band. Impact of different sales mix on new car average fuel economy.

Standards 247
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Advanced Turbocharged, Direct Injected Gasoline Engines Poised to Take on Diesels in US and in Europe for Reduced Fuel Consumption and Emissions

Green Car Congress

We see dramatic downsizing and boosting [as] something that’s going to for gasoline engines especially. The basic approach of the downsized 3-cylinder gasoline direct injection (GDI) engine is to reduce engine displacement and decrease engine speed (downsizing and downspeeding) to increase engine load for improved specific fuel consumption.

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Taking another look at methanol as an alternative transportation fuel for the US

Green Car Congress

A recent white paper by Leslie Bromberg of MIT’s Plasma Science and Fusion Center and Wai K. Researchers at the US EPA investigating this approach concluded that the M85 and E85 engines could provide efficiencies comparable or higher than the diesel, in dedicated fuel, high compression ratio turbo charged/downsized engines.