进气控制方式对可变气门升程汽油机性能影响机制的仿真研究  

Simulation Study on Effect of Intake Control Mode on Performance of Variable Valve Lift Gasoline Engine

作　　者：谷乐祺 解方喜[1] 石卜从 GU Leqi;XIE Fangxi;SHI Bucong(State Key Laboratory of Automotive Simulation and Control(ASCL),Jilin University,Changchun 130022,China;R&D Center,BAIC Motor Corporation Ltd.,Beijing 101300,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,吉林长春130022 [2]北京汽车股份有限公司汽车研究院,北京101300

出　　处：《机械制造与自动化》2022年第3期89-95,共7页Machine Building & Automation

基　　金：国家自然科学基金项目(51876079);吉林省科技发展计划项目(20200403150SF);中央高校基本科研业务费专项资金资助。

摘　　要：为进一步推动可变气门升程技术的高效应用,基于一款四缸直喷汽油机,利用GT-Power软件仿真探讨不同进气控制方式对其性能的影响规律及作用机理。结果表明:相较传统节气门控制方式,进气门早关与节气门和进气门协同控制方式在改善发动机指示热效率、机械效率、有效热效率及油耗等方面均展现了很好的优化潜力,燃油消耗率最大降低近5%。但由于EIVC方式在中、小负荷工况会导致缸内气流运动减弱、燃烧推迟现象,因而部分中、小负荷工况采用TE方式更佳。To further promote the efficient application of variable valve lift technology,the influence laws and action mechanism imposed by different intake control modes on engines performance are explored based on a four-cylinder direct-injection gasoline engine and by GT-Power software.It is concluded that the early intake valve closing and the throttle and intake valve cooperative control modes,compared with the traditional throttle control modes,show good optimization potential in improving the indicated thermal,mechanical,effective thermal efficiency and fuel consumption of the engine,with maximum reduction of nearly 5%fuel consumption rate.The EIVC modes,however,maycause the combustion delay phenomenon due to the weakening of the air flow in the cylinder under the medium and small load conditions,it is,therefore,better to adopt the TE modes in some small load conditions.

关 键 词：汽油机 可变气门升程 进气控制方式 能量分配 优化控制 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]