Remove Downsizing Remove Economy Remove Events Remove Low Cost
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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. to 2 ratio points and maintain the same knock limit for an additional 3-4% improvement in fuel economy.

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

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Together the partners have sought to demonstrate an extremely cost-effective, ultra-efficient gasoline engine in a C-segment passenger car delivering the performance of a baseline 2.0-liter liter model but with significantly reduced real-world and drive cycle CO 2 emissions, and comparable improvements in fuel-economy. Earlier post.).

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JAC and Ricardo develop production version of HyBoost concept; seeking 30% boost in fuel economy with same performance

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Anhui Jianghuai Automobile Group Co Ltd (JAC) and Ricardo are collaborating on a project to develop the Ricardo HyBoost concept ( earlier post )—a combination of low-cost technologies to deliver improved performance and fuel economy which featured recently in the Ricardo Centenary celebrations —into volume production on a JAC vehicle.

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DOE awards Envera $2.8M to develop and to test efficient variable compression ratio engine

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The new engine will achieve high efficiency using the Atkinson Cycle with an 18:1 compression ratio, combined with aggressive engine downsizing. Valve events will also be adjusted with the VVA to trap more air in the cylinders when power is needed. Engine downsizing is a key tool in improving fuel economy. Background.

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Delphi develops new high-pressure common rail systems for heavy-duty and light-duty engines; Euro VI and beyond

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At the same event, Delphi also revealed a new common rail system for small, one- to four-cylinder diesel engines, including non-automotive applications. This concept system is expected to be ideal for heavily downsized applications and developing markets. New high pressure heavy duty common rail systems. Resources. Crossley, D.

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Pinnacle 4-stroke opposed-piston SI engine shows fuel economy improvements of between 30-60% at light loads, 12-30% at medium loads over conventional

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In general, the low surface area and low heat transfer and low knock combustion chamber enable the combustion strategy to operate in an over-compressed mode. During the valve open event, all but the top few millimeters are drawn past a lip seal into oil. —Tony Willcox, Pinnacle Engines. Active sleeve cooling.

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Delphi Highlighting New Components and Systems for Improving Fuel Consumption in Spark Ignition Engines

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GDi is essential for the accelerating trend toward downsized turbocharged engines as by cooling the charge it allows higher boost levels or a higher compression ratio. This results in a more fun-to-drive experience with better fuel economy. —Dr. The planned introduction date is toward the end of 2011.

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