Effects of engine operating conditions on particle emissions of lean-burn gasoline direct-injection engine
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- 作者：Cheolwoong Park ; cwpark@kimm.re.kr" class="auth_mail" title="E-mail the corresponding author ; Sunyoup Lee ; Uihyung Yi
- 关键词：Gasoline direct-injection engine ; Lean combustion ; Excess air ratio ; Particulate matter ; Particle number ; Combustion strategy
- 刊名：Energy
- 出版年：2016
- 出版时间：15 November 2016
- 年：2016
- 卷：115
- 期：part_P1
- 页码：1148-1155
- 全文大小：1837 K
文摘
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PM mass concentration is higher at a lower load due to fuel wetting under stoichiometric condition.
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PM1 constitutes the largest proportion of the PM mass concentration of stratified mixture combustion.
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The frequency of particle collision for GDI engine is lower than that of the diffusion flame in a diesel engine.
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The PM concentration around an excess air ratio of 1.5 increases due to the insufficient excess air.
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Increasing the excess air ratio to more than 2.0 leads a re-increase in the PM concentration and PNs.