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ORNL Researchers Find Thermochemical Exhaust Heat Recuperation In Internal Combustion Engines Could Provide Substantial Boosts in Second-Law Efficiency

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When reforming is not used, the fuel and exhaust pass through CV2 unchanged. A paper on their work was published online 5 February in the ACS journal Energy & Fuels. The basic concept of TCR involves using exhaust heat to promote on-board reforming of hydrocarbon fuels into syngas (a mixture of carbon monoxide and hydrogen).

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Start-up Eco-Motive developing dual-fuel “H” engine; parallel, independently fueled piston banks

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The H-engine—basically two separate engines housed within the same engine block—comprises two switchable parallel piston banks, independently fueled by gasoline and CNG. Startup Eco-Motive has developed what it calls the first dual-fuel “H” engine; it recently received a patent (# 8807098 ) on the design.

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Achates Power continues development of opposed-piston technology for US Army vehicles

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The family of engines strategy uses a common power cylinder system across several different engine variants to address a range of power and torque requirements in order to serve multiple military vehicles with a common architecture. In December 2020, Achates Power announced that their 10.6L

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Concept Engine: Ilmor Engineering to Show Cutaway of 5-Stroke Engine at Engine EXPO

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Rendering of the Ilmor 5-stroke concept engine. Ilmor Engineering will present a new cutaway version of the Ilmor 5-stroke concept engine at the upcoming Engine EXPO 2009, 16-18 June, in Stuttgart, Germany. The 5-stroke concept engine is a self-funded proof of concept. Click to enlarge.

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Motiv Engines introduces 2nd-generation split-cycle concept; MkII Clarke-Brayton heavy-duty engine being designed for LNG

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Motiv Engines, LLC introduced the second-generation of its engine concept dubbed the MkII Clarke-Brayton Engine, which it intends to develop into a heavy-duty on-highway engine fueled by liquid natural gas (LNG). It expands all the way to ambient pressure before the exhaust stroke.

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New split-cycle concept to control diesel HCCI combustion

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A team from Universita degli Studi di Pisa (Italy) and Rolf Reitz at the University of Wisconsin-Madison are proposing a novel combustion concept—Homogenous Charge Progressive Combustion (HCPC)—based on a split-cycle principle to control HCCI combustion in diesel-fueled engines. —Musu et al., SAE 2010-01-2107.

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Concept: Downsized and Supercharged Hybrid Pneumatic Engine for 30%+ Reduction in Fuel Consumption

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Researchers at ETH Zürich, with partners Robert Bosch GmbH, Wenko Swissauto and the Swiss Federal Office of Energy are developing a downsized and supercharged hybrid pneumatic engine that they say can deliver a fuel consumption reduction of more than 30% compared to a standard engine with the same rated power. Earlier post.).