摘要
针对国内中小排量摩托车发动机的结构特点,研制了切换凸轮型线VVT系统,探讨了基于循环模拟进行VVT系统与发动机热力循环过程合理匹配的途径。建立了嵌入可切换双进气正时VVT系统的发动机循环仿真模型,通过实验测试对仿真模型进行了验证;分析了VVT控制策略和运行模式,对VVT机构配气正时参数进行了优化。实验表明:通过加装这种切换凸轮型线VVT系统能够有效提高JL156FMI型摩托车发动机的动力性和燃油经济性。
A variable valve timing （VVT）mechanism of switching cam profile was developed for the small-medium displacement motorcycle engines. The approach to optimally match the VVT system with thermodynamic cycle process of the engines based on cycle simulation was explored. A cycle simulation model insetting the VVT mechanism module with tow-mode intake timing parameters was created, and was verified by comparing the simulation results with the engine rig testing data. Controlling strategy and operational mode were investigated and analyzed, and timing parameters of the VVT system were optimized by running the cycle simulation model. It has been proved that the JL156FMI motorcycle engine performance could be effectively improved by loading the new type VVT system.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2006年第10期23-26,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十五"国家科技攻关计划资助项目(项目编号:2004BA434C-10)
关键词
汽油机
可变配气正时
循环模拟
Gasoline engine, Variable valve timing, Cycle simulation
