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    • Influence of Injection Strategy on Combustion Process of Diesel Rotary Engine Under Apex Seal Leakage
    DOI：10.13949/j.cnki.nrjgc.2023.03.005
    Key Words:diesel  rotary engine  injection strategy  apex seal leakage  combustion process  emission
    Author NameAffiliationE-mail
    CHEN Tao* Yunnan Key Laboratory of Internal Combustion Engines， Kunming University of Science and Technology， Kunming 650500， China 528727240@qq.com 
    LEI Jilin* Yunnan Key Laboratory of Internal Combustion Engines， Kunming University of Science and Technology， Kunming 650500， China leijilin@kust.edu.cn 
    DENG Xiwen Yunnan Key Laboratory of Internal Combustion Engines， Kunming University of Science and Technology， Kunming 650500， China  
    ZHANG Yong Yunnan Xiyi Industrial Co.， Ltd.， Kunming 650114， China  
    WANG Ruyan Yunnan Xiyi Industrial Co.， Ltd.， Kunming 650114， China  
    LI Hong Yunnan Xiyi Industrial Co.， Ltd.， Kunming 650114， China  
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    Abstract:In order to improve the performance of diesel rotary engine， the combustion process of diesel rotary engine was studied. In addition， considering the apex seal leakage which is difficult to avoid in the actual working process of the rotary engine， a three-dimensional dynamic calculation model of the peripheral intake rotary engine considering apex seal leakage was established and verified. Combined with the model， the effects of injection time and duration on fuel distribution and combustion process were studied. The results show that when the injection time is 80° in crankshaft angle before top dead center and the injection duration is 50° in crankshaft angle， better combustion and emission characteristics can be obtained. Compared with the original scheme， the in-cylinder peak pressure increased by 11.38%， the soot and CO production decreased by 78.71% and 92.72%， respectively， and the NOx and CO2 production increased.
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