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论文类型：会议论文

发表时间：2010-11-05

收录刊物：EI、CPCI-S、Scopus

页面范围：1172-1176

关键字：gasoline engine; direct injection; working process; numerical simulation

摘要：The working process of a gasoline direct injection engine, which was developed by the R&D Center of FAW Group, was simulated with 3-D CFD package. The movement of working fluid in the intake ports and cylinder of the engine was analyzed. The fuel injection and fuel-air mixture formation processes of two injection strategies were compared and analyzed. The formation and development processes of tumble in cylinder were studied, and the influence of tumble on fuel-air mixture formation was investigated. The fuel injection, fuel-air mixture formation and combustion processes of two injection timings were compared. The results show that under the present condition, injection timing of SOI=420 degrees CA leads to better fuel-air mixture quality around spark plug at the ignition time, and that is in favor of the ignition and the flame propagation.