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

Green Car Congress

In a presentation at the SAE 2014 High Efficiency IC Engine Symposium and then in a paper given at SAE 2014 World Congress, Mark Sellnau, Engineering Manager, Delphi Advanced Powertrain, reported that Brake Specific Fuel Consumption for the 1.8L Vehicle fuel efficiency on FTP. +35% Earlier post , earlier post.). Background.

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University of Wisconsin Researchers Investigating Dual-Fuel (Gasoline and Diesel) Partially Premixed Combustion for High-Efficiency, Ultra-Low Emission Combustion; 53% Thermal Efficiency

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The dual-fuel PCCI strategy showed thermal efficiency of 53%. Emissions under the dual-fuel concept, at 11 bar IMEP. The horizontal axis shows the percentage of gasoline in the blend. Kalghatgi and his group explored both the use of low-cetane fuels and exhaust gas recirculation (SAE 2007-01-0006). Source: Rolf Reitz.

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UW Madison team finds methylbutenol a potentially promising biofuel for blending with gasoline

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A team at the University of Madison-Wisconsin studied critical sooting equivalence ratios and subsequent particulate formation during spark-ignition combustion for blends of ethanol, isobutanol (2-methyl-1-propanol), and methylbutenol (2-methyl-3-buten-2-ol) with gasoline using premixed prevaporized (PMPV) fueling.

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EPA issues fuel waiver for four states impacted by bp Whiting Refinery shutdown

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As part of the Federal Government’s response to a fire and shutdown at the bp Whiting Refinery in Whiting, Indiana, US Environmental Protection Agency (EPA) Administrator Michael Regan issued an emergency fuel waiver to help alleviate fuel shortages in four states the supply of gasoline of which has been impacted by the refinery shutdown.

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U. of Wisconsin RCCI combustion work progressing; modeled 53% gross indicated efficiency in a light-duty engine could result in 2x fuel savings compared to SI gasoline

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Researchers at the University of Wisconsin Engine Research Center ( ERC ) led by Dr. Rolf Reitz are developing a dual-fuel compression-ignition engine low-temperature combustion (LTC) strategy called reactivity controlled compression ignition (RCCI) ( Earlier post.) of the fuel energy. —Rolf Reitz. Low-load conditions.

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U. Wisconsin team reports gross indicated thermal efficiency of RCCI operation near 60%

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In a paper presented at the 2013 SAE World Congress, a team from the University of Wisconsin reported a gross indicated thermal efficiency of Reactivity Controlled Compression Ignition (RCCI) operation of near 60%, given optimized combustion management and thermodynamic conditions. Earlier post.). —Splitter et al.

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U Wisc. study explores effects of biodiesel-gasoline blend in diesel engine

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One high-efficiency combustion concept under investigation is gasoline compression ignition (GCI)—the use of gasoline-like fuels to deliver very low NO x and PM emissions as well as high efficiency in a diesel compression ignition engine. The commercially available gasoline base had an octane number of 87.

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