【作者】

Guohua Xie，Xiaoyu Xie

【摘要】

论文已在中国上海举行的2013年CIMAC大会上发表。论文的版权归CIMAC所有。 The sequential turbocharging technology is the most effective method to improve diesel engine performance at low condition (low speed and low load). The technology can extend engine operation range at low condition, improve engine economy performance and reduce engine exhaust emissions. A new type of sequential turbocharging system–a split intake and exhaust boosting system is proposed here. The new system consists of two turbochargers of a large one and a small one. The adjustment range of intake and exhaust flows of such system is twice that of a normal turbocharger system with two identical turbochargers. The adjustment of intake and exhaust flows of the new sequential turbocharging system is stepless, which can avoid some problems such as compressor surge, turbocharger overspeed and high oil consumption in engine transient process. The system enables a turbochargered engine to obtain high EGR rate at all operating points with the energy of a turbocharger system itself, thus meeting much stricter exhaust regulations.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

1

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