4702 The Influence of Inert Gas on DME-HCCI Combustion

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  • 4702 不活性ガスがDME-HCCI燃焼に与える影響(S56-1 エンジン燃焼-さらなる進化を目指して-(1),S56 エンジン燃焼-さらなる進化を目指して-)

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In recent years the study of Homogeneous Charge Compression Ignition (HCCI) combustion is carried out actively because of environmental concerns and drain of fossil fuels. Theoretically, HCCI combustion is highly effective ; accordingly it enable to decrease Nitrogen Oxide (NO_x) and Particulate Matters (PM) simultaneously. However, HCCI combustion has the problem that the ignition timing control is difficult and operating range is narrow. In this study, Dimethyl Ether (DME) was supplied to a test diesel engine to operate HCCI combustion. The results of these analyses showed that the CO_2 influenced combustion reactions and ignition timing in the DME-HCCI combustion. This paper discusses the influence of CO_2 in the HCCI combustion.

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