| 摘要:采用发动机工作过程1D热力学仿真和配气机构1D动力学仿真的方法，对某采用可变配气机构柴油机的气门型线进行优化设计，确定在高速区和低速区的气门升程曲线。先后进行配气机构动力学校核和柴油机性能校核，通过性能试验验证了优化设计方案的有效性。 |
| 关键词: 配气机构 气门型线 热力学 动力学 优化设计 |
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| Optimization Design of Valve Profile for a Diesel Engine with Variable Valve Train |
| DUAN Yanqiang,ZHENG Xiaohua,LIU Jinrong,WANG Zehui |
| Chongqing Weichai Engine Co.， Ltd.， Chongqing 402262， China |
| Abstract:Based on the methods of 1D thermodynamics simulation of the engine working process and 1D dynamics simulation of the valve train，the optimization design of the valve profile of a diesel engine with variable valve train was carried out，and the valve lift curve in high-speed zone and low-speed zone were determined.The dynamics of valve train and diesel engine performance were checked successively，and the effectiveness of the optimized design scheme was verified through performance test. |
| Key words: valve train valve profile thermodynamics dynamics optimization design |
