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Study finds hitting thermodynamic sweet spot in dilute, boosted gasoline engines has potential for fuel economy gains between 23% and 58%

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A study by a team led by Dr. Dennis Assanis at the University of Michigan suggests that accessing the “thermodynamic sweet spot” in high-efficiency, dilute, boosted gasoline engines has the potential for vehicle fuel economy gains between 23% and 58%. Their paper is published in the International Journal of Engine Research.

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DOE awards $17M to FY 2014 SBIR Phase II projects; includes Si/graphene anodes, motor windings, exhaust treatments

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Hybrid Electric Turbocharger for Exhaust Energy Recovery and Transient Lag Reduction. By the end of Phase II, Mainstream plans to demonstrate a production-ready prototype that exceeds DOE targets for fuel economy, operating range, and cost. A Novel Exhaust after Treatment Catalyst. Lead organization. Description. nGimat LLC.

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ACCESS project targeting 30% improvement in fuel economy and SULEV emissions in light-duty gasoline engine; multi-mode SI/HCCI combustion

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Hakan Yilmaz, Global Technology Management, Gasoline Systems, for Bosch presented an overview of and update on the project at the 2011 DEER conference in Detroit in October. The partners have a single-cylinder research engine lab with fully flexible valve actuation (FFVA) at Stanford and a multi-cylinder engine lab at University of Michigan.

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Update on the ACCESS fuel efficient engine project; simulations find up to 48.9% improvement in fuel economy over baseline

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At the recent 2013 SAE World Congress, engineers from Bosch and AVL presented papers on progress in the ACCESS project, describing the design, combustion development and controls development for a resulting 4-cylinder gasoline turbocharged direct injection (GTDI) engine with part-load HCCI capability. Earlier post.). —Wheeler et al.

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New 4-cylinder 2.3L EcoBoost on Lincoln MKC small SUV; future EcoBoost prospects

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liter EcoBoost gasoline turbocharged direct injection (GTDI) four-cylinder unit. Ford says the engine can deliver up to 15% better fuel economy than comparable six-cylinder engines. Featuring a twin-scroll turbocharger and a three-port integrated exhaust manifold (IEM), the 2.3-liter Ford specifically engineered the 2.3-liter

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Ford moving to vehicle testing with advanced 2.3L MiGTDI engine research project; Tier 3 SULEV30 target with 25% fuel economy improvement

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Ford’s approach to the project was to engineer a comprehensive suite of gasoline engine systems technologies, including: Aggressive engine downsizing in a mid-sized sedan from a large V-6 to a small I-4. 1, and the engine is designed to run on 98 RON gasoline. Split, parallel, cross-flow cooling with integrated exhaust manifold.

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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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Rolf Reitz, are investigating a blended dual-fuel (gasoline and diesel) concept to extend the operating range of partially premixed charge compression ignition combustion by using the varying fuel reactivity of the charge blend, which is determined in real time. The horizontal axis shows the percentage of gasoline in the blend.

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