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HyBoost concept achieving close to Prius-level CO2 emissions; aggressive downsizing with advanced boosting and micro-hybrid system

Green Car Congress

variant but with fuel economy of a strong hybrid. HyBoost achieves this by combining aggressive 50% downsizing of the engine with an electric supercharger for transient low-speed performance, and a micro-hybrid stop-start and energy recuperation systems, Boggs said. Downsizing the 2.0-liter Micro-hybrid market.

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

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Schematic of downsized and supercharged four-stroke hybrid pneumatic spark injection engine. The reduction in fuel consumption is obtained mainly through enabling the effective use of a heavily downsized engine, rather than from regenerative efficiency. Source: ETH Zürich. Click to enlarge. Earlier post.). Dönitz et al.

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HyBoost demonstrator debuts at LCV2011; 50% by swept volume downsizing with low-cost electrification

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The HyBoost concept is based on a 2009 Ford Focus in which a 2.0L In implementing this 50% downsizing by swept volume, the research team delivered zero degradation in driveability, performance or acceleration. Earlier post.). naturally aspirated four-cylinder gasoline engine has been replaced with a 1.0L three-cylinder EcoBoost engine.

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EIA: trends in downsized engine design leading to increased demand for higher-octane gasoline

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Automakers are using a number of approaches and technologies to address the requirements of the Corporate Average Fuel Economy (CAFE) regulations, including, but not limited to: weight reduction; conventional engine and transmission efficiency improvements; better aerodynamics; and further development and sale of hybrids and electric vehicles.

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ETH Zürich Developing Pneumatic Hybrid Engine; Approaches Hybrid-Electric Performance at Lower Cost

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Pneumatic hybrid engine on the test bench. Researchers at ETH Zürich are developing a pneumatic hybrid engine—an internal combustion engine connected to a compressed air tank instead of a battery system. The compressed air supply also allows extreme downsizing. SAE 2009-01-1326 , not yet published). Rüegg / ETH Zurich.

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Daimler Trucks NA SuperTruck achieves 115% freight efficiency improvement over 2009 baseline; 50.2% engine BTE

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These tests resulted in the combined 115% freight efficiency improvement over a 2009 baseline truck. The Freightliner SuperTruck uses a downsized and downsped 10.7-liter liter engine, a hybrid system, a Waste Heat Recovery (WHR) system, along with a number of other upgrades. engine brake thermal efficiency. mpg (19.26

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Three Mercedes-Benz Citaro G BlueTec Series Hybrid Buses now in Service at Stuttgarter Straßenbahnen

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Following successful practical trials in December 2009, Stuttgarter Straßenbahnen AG (SSB) has now brought three Mercedes-Benz Citaro G BlueTec Hybrid buses ( earlier post ) into service, with a further two vehicles due to be delivered later this year. The Citaro series hybrid uses a 160 kW, 4.8-liter

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