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BorgWarner suggests Valve-Event Modulated Boost system can offer 6-17% fuel economy benefit over already downsized and turbocharged engines

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The VEMB system uses a concentric camshaft, blow-down manifold and scavenge manifold to separate the exhaust event into two phases: high-energy blow-down to the turbo without pumping losses, and high-hydrocarbon scavenge to the EGR system. Source: Borgwarner. Click to enlarge.

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Report: Japan carmakers downsizing in Europe as market shrinks

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’s decision to cut stop producing the Colt subcompact there highlight the a downsizing trend in Europe for Japanese carmakers as the new-vehicle market there shrinks. The European Union will tighten carbon dioxide emission rules from 2012, with a goal of curbing exhaust on new vehicles to an average 130 grams per kilometer by 2015.

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Simulation study finds “Millerizing” the Scuderi split-cycle engine could enable 50% engine downsizing with retention of power and torque, along with reduced fuel consumption

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Simulation study finds Miller version of Scuderi engine can deliver twice the BMEP as naturally aspirated version, theoretically enabling 50% downsizing while maintaining performance. Applying the Miller cycle to the Scuderi engine (right) entails downsizing of the compression cylinder. Source: Scuderi. Click to enlarge.

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New Audi S models to feature new downsized 4.0L V8 with cylinder deactivation, energy recuperation and start-stop

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This is a downsized platform from the prior 5.2L A sound actuator, flaps in the exhaust system, the engine shroud and a newly developed two-mass flywheel with a centrifugal force pendulum in the seven-speed S tronic also contribute to the sound and smoothness of the engine. The new S6, S7 and S8 feature a new 4.0L

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Simulation study suggests ORC waste heat recovery system could deliver potential 7% improvement in fuel consumption in a PHEV on highway

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Their paper was presented at the ASME Internal Combustion Engine Division 2012 Fall Technical Conference by Marcello Canova, assistant professor at OSU; lead author was Philipp Skarke, from the University of Stuttgart Institute for Internal Combustion Engines and Automotive Engineering. Exhaust gas exergy map of EcoCAR engine.

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ARPA-E awards U-M $1.9M to develop advanced low-cost high-efficiency engine; boosting, highly dilute combustion and 48V system

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million to a project to develop a high-efficiency engine system that integrates a compact micro-hybrid configuration of a supercharger with an electric waste heat recovery system and employs high rates of recirculated exhaust gases.

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Downsized 4.0 TFSI for Audi S8 cuts fuel consumption 23% compared to predecessor; cylinder deactivation and start-stop

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TFSI twin turbo V8 for the upcoming Audi top-of-the-line S8 ( earlier post ), due on market in early summer 2012, develops 382 kW (520 hp), while consuming 10.2 Audi’s principle of downsizing: “ Forced induction replaces displacement ” One twin-scroll turbocharger per cylinder bank compresses the fresh air.

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