Performance and emission characteristics of QHCCI dimethyl ether engine

2008年第2卷第4期

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《能源前沿（英文）》 >> 2008年第2卷第4期 doi: 10.1007/s11708-008-0075-5

Performance and emission characteristics of QHCCI dimethyl ether engine

1.School of Energy and Power Engineering, Xi'an Jiaotong University; 2.Chang'an Automobile Co. Ltd

发布日期： 2008-12-05

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摘要

Experimental investigation into the effects of different pilot amounts of dimethyl ether (DME) on the performance and emission of a single-cylinder direct-injection DME engine is conducted. The results show that a DME engine can operate at a wider range of speeds and loads at quasi-homogenous charge compression ignition (QHCCI) mode. The brake thermal efficiency increases while the exhaust temperature decreases. NO emission decreases by about 30%–50% although there is a slight increase in HC and CO emissions. NO, HC and CO emissions increase with an increase in the amount of DME pilot. QHCCI is a good way to increase thermal efficiency and decrease NO emission.

关键词

Experimental investigation ; single-cylinder direct-injection ; exhaust temperature ; dimethyl ; compression ignition