Download Advanced Direct Injection Combustion Engine Technologies and by H. Zhao PDF

By H. Zhao

Direct injection permits certain keep an eye on of the fuel/air mix in order that engines could be tuned for better energy and gasoline economic system. This needs to be balanced opposed to elevated apparatus bills and emissions, featuring ongoing examine demanding situations in bettering the know-how for advertisement purposes. this crucial booklet stories the technological know-how and know-how of alternative different types of DI combustion engines and their fuels. 5 major sections offer an outline of the state-of-the-art, masking fuel DI engines; either light-duty and heavy-duty DI diesel engines; replacement fuels and aftertreatment units; and complicated modeling and experimental recommendations.

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Additional info for Advanced Direct Injection Combustion Engine Technologies and Development: Gasoline and Gas Engines, Volume 1

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Harrington D. , Automotive Gasoline Direct-Injection Engines, SAE International, 2002. Zhao H. ), HCCI and CAI Engines for the Automotive Industry, Woodhead Publishing, Cambridge, 2007. 2 Stratified-charge combustion in direct injection gasoline engines U. Spicher and T. Heidenreich, Universität Karlsruhe (TH), Germany Abstract: Direct injection gasoline engines promise the highest potential to minimise fuel consumption. The first gasoline direct injection engines of the ‘second generation’ with spray-guided combustion systems were introduced to the market in 2006.

The overall unburned HC and soot/particulate emissions at part load stratified charge operation with direct injection are typically several times higher than those from homogeneous operations. However, HC emissions during cold start can be significantly reduced with direct injection. For example, split in-cylinder injection allows spark timing to be further retarded to produce a higher exhaust gas temperature for faster catalyst light-off. This is in addition to the removal of wall wetting on the intake port and the associated over-enrichment with direct in-cylinder injection.

10). In terms of fuel consumption, customers have benefited from more extensive use of the stratified charge operation with second-generation gasoline direct injection. Exhaust gas treatment Exhaust gas treatment has a major influence on fuel consumption. Stringent regulations apply in relation to exhaust gas treatment with gasoline direct injection systems. , 2003). during part-load operation. Selective exhaust manifold heating strategies can be implemented by means of flexible multiple injection, thus effectively reducing hydrocarbon emissions during cold starts.

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