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Light duty RCCI can deliver engine-out Tier 2 Bin 5 NOx; potential for 52% gross indicated efficiency

Green Car Congress

Rolf Reitz of the University of Wisconsin found that reactivity controlled compression ignition (RCCI) ( earlier post ) in a light-duty engine can meet Tier 2 Bin 5 NO x levels without aftertreatment, while offering a 4% improvement in fuel consumption and 7.3% Earlier post.). —Kokjohn and Reitz. Sage L Kokjohn and Rolf D.

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ORNL study finds multi-mode RCCI can offer 15%+ fuel economy improvements across multiple light-duty driving cycles

Green Car Congress

Among their findings were that multi-mode RCCI has the potential to offer greater than 15% fuel economy improvement over a 2009 gasoline PFI baseline over many light-duty driving cycles, despite the lack of complete drive cycle coverage for RCCI mode. Their paper is published in the International Journal of Engine Research. RCCI background.

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Study finds E20 offers higher peak load capacity and thermal efficiency than gasoline in RCCI combustion

Green Car Congress

The process involves introduction of a low reactivity fuel into the cylinder to create a well-mixed charge of low reactivity fuel, air and recirculated exhaust gases. Both biofuels offered faster transient response to recover the CA50 to the steady-state CA50 value than gasoline or ultra-low sulfur diesel.

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Achates Power wins $9M from ARPA-E to develop gasoline compression ignition medium-duty multi-cylinder opposed-piston engine

Green Car Congress

The unthrottled nature of the compression ignition process provides high engine efficiency while achieving compliant exhaust emissions with conventional, low-cost aftertreatment. Although Achates’s work to date has been with diesel, its fundamental approach is suited for advanced combustion regimes using other fuels as well.

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DOE awards nearly $55M to advance fuel efficient vehicle technologies in support of EV Everywhere and SuperTruck

Green Car Congress

Building on the SuperTruck activity, other projects aim at developing enabling technologies to improve the efficiency of heavy-duty diesel engines. Ultra-Light Door Design, Manufacturing and Demonstration (Area of Interest 2). Board of Regents of University of Wisconsin. Vehicle Technologies Program Awards. Description.

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DOE Announces Up to $13M in Funding for Six Advanced Combustion and Emissions Controls RD Projects

Green Car Congress

The research projects will contribute to the development of high efficiency internal combustion engines with the goals of improving fuel economies by 20-40% in light-duty vehicles and attaining 55% brake thermal efficiency in heavy-duty engine systems.

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US DOE awards more than $175M to 40 projects for advanced vehicle research and development

Green Car Congress

Wisconsin Engine Research Consultants LLC. This project will optimize fuel-based control of novel combustion strategies in light- and heavy-duty vehicles to enable diesel-like efficiencies with ultra-low engine-out emissions. Light-weighting materials. Demo Project for Multi-material light-weight prototype vehicle.