混合动力发动机废气再循环系统低温冷凝析水的失火问题研究

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中图分类号：U464.1 文献标志码：A DOI： 10.20104/j.cnki.1674-6546.20250031

【Abstract】This paper focuses on the problem of low temperature and high humidity environment lead to misfire on hybridengine with Exhaust GasRecirculation（EGR）system.Apowertrainenvironmentsimulationsystemiswas established to conduct experimental research.Droplet sensorsand spark plug-type cylinder pressre sensors are introduced to perform quantitativeanalysisbasedonambienttemperature，humidity，EGRrate，aswellasdropletquantityvolume，andmisfire frequency.Itre-constructEGR’scalibrationmethodandbuildaclose-lopEGRcondensation model，andverifythemultiple scenariosof stabilityand transients fuel consumptionand emission.Theresults show thattheEGRcondensation modelcan solvethe problemofEGRcondensed waterleadtomisfirequestion，andexpandthelow temperatureusingEGR'sconditions to reduce user fuel consumption.

KeyWords： HybridEngine，EGR，Low temperature，High humidity，Condensed water，Misfire 【引用格式】冯海涛，姜思君，程强，等.混合动力发动机废气再循环系统低温冷凝析水的失火问题研究[J].汽车工程师， 2025（11）： 17-24. FENG H T， JIANG S J， CHENG Q，et al.Experimental Research of Low Temperature Condensation Misfire Because of EGR with Hybrid Engine[J].Automotive Engineer，2025（11）： 17-24.

1前言

伴随日益严格的乘用车油耗及排放法规的实施，废气再循环（ExhaustGasRecirculation，EGR）技术在动力系统开发中获得广泛关注。（剩余9296字）