Effect of equivalence ratio on diesel direct injection spark ignition combustion

作     者：CHEN Zheng QIN Tao HE Ting-pu ZHU Li-jing 陈征;覃涛;何廷谱;朱立靖

作者机构：State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangsha 410082China Research Center for Advanced Powertrain TechnologyDepartment of Energy and Power EngineeringHunan UniversityChangsha 410082China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2020年第27卷第8期

页      面：2338-2352页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：Project(2018JJ2041)supported by the Science and Technology Project in Hunan Province,China Project(szjj2019-008)supported by the Open Research Subject of Key Laboratory of Fluid and Power Machinery,Ministry of Education,China 

主　　题：diesel direct injection spark ignition equivalence ratio combustion knock 

摘      要：Aviation heavy-fuel spark ignition(SI)piston engines have been paid more and more attention in the area of small *** heavy-fuel refers to aviation kerosene or light diesel fuel,which is safer to use and store compared to gasoline *** diesel fuel is more suitable for small aviation application on *** this study,numerical simulation was performed to evaluate the possibility of switching from gasoline direct injection spark ignition(DISI)to diesel DISI *** was injected into the cylinder by original DI system and ignited by *** the simulation,computational models were calibrated by test data from a DI *** on the calibrated models,furthermore,the behavior of diesel DISI combustion was *** results indicate that diesel DISI combustion is slower compared to gasoline,and the knock tendency of diesel in SI combustion is *** a diesel/air mixture with an equivalence ratio of 0.6 to 1.4,higher combustion pressure and faster burning rate occur when the equivalence ratios are 1.2 and 1.0,but the latter has a higher possibility of *** summary,the SI combustion of diesel fuel with a rich mixture can achieve better combustion performance in the engine.