Lei Shi
Shanghai Jiao Tong University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Lei Shi.
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering | 2016
Lei Shi; Youcheng Sun; Kangyao Deng
For diesel homogeneous charge compression ignition engines, combustion is unstable during the mode-switching process because of an unfavourable evaporation environment, especially at low speeds. Unusual fluctuations in the net indicated mean effective pressure and a spike in the transient emissions occur in the transitional cycles between modes. In this study, first, experiments were performed to characterize the hydrocarbon emissions during the combustion mode-switching process between homogeneous charge compression ignition and conventional diesel compression ignition. The results showed that the hydrocarbon emissions decreased as the speed increased at a constant load. When the load increased at a constant speed, the hydrocarbon emissions decreased. A spike in the hydrocarbon emissions during the transitional cycles was observed at 1000 r/min when mode switching from homogeneous charge compression ignition to compression ignition. Second, based on the spike phenomenon, a method of fuel adjustment was proposed to eliminate the fluctuations in the net indicated mean effective pressure and the spike in the hydrocarbon emissions in the five transitional cycles. Finally, by regulating the fuel adjustment coefficient in the five transitional cycles, the spike phenomenon of the transient hydrocarbon emissions was eliminated, and the fluctuations in the net indicated mean effective pressure decreased. The coefficient of variation in the net indicated mean effective pressure decreased to 2%.
International Journal of Automotive Technology | 2007
Lei Shi; Kangyao Deng; Yi Cui
Archive | 2009
Yong Gui; Kangyao Deng; Yi Cui; Lei Shi; Fangzheng He
Archive | 2012
Lei Shi; Min Xu; Youcheng Sun; Kangyao Deng
International Journal of Automotive Technology | 2009
Shuan Qu; Kangyao Deng; Lei Shi; Yi Cui
JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting | 2015
Lei Shi; Hualei Li; Huiyan Zhang; Xiaojian Mao; Kangyao Deng; Bo Liu; Lin Hua
International Journal of Automotive Technology | 2016
Meng Xu; Y C Sun; Yi Cui; Kangyao Deng; Lei Shi
Journal of The Energy Institute | 2014
Yong Gui; Kangyao Deng; Min Xu; Lei Shi; Youcheng Sun
Archive | 2012
Min Xu; Kangyao Deng; Yong Gui; Lei Shi
Journal of The Energy Institute | 2016
Hualei Li; Lei Shi; Kangyao Deng