A New Sequential Turbocharging System
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.
Guohua Xie Xiaoyu Xie
Shanghai Diesel Engine CO.,LTD.,China School of Mechanical Engineering,Shanghai Jiao Tong University,China
国际会议
上海
英文
1-8
2013-05-13（万方平台首次上网日期，不代表论文的发表时间）