基于发动机特性曲面的换挡策略研究  

Shift strategy research based on engine characteristic surface

作　　者：王伟[1] 廖林清[2] 柯晶晶[1] 谢明[1] 

机构地区：[1]重庆理工大学重庆汽车学院,重庆400050 [2]重庆理工大学汽车零部件制造及检测技术教育部重点实验室,重庆400050

出　　处：《机械设计》2013年第10期46-49,55,共5页Journal of Machine Design

基　　金：重庆市教委科学技术研究资助项目(KJ080619)

摘　　要：从发动机的特性出发,绘制出发动机的相关特性曲面,在特性曲面上绘制出各挡位工作线。提出了一种计算油耗的新方法,找到发动机最优工作线。结合挡位工作线,确定了变速器合理换挡时机,最后根据所得结论对所采用的变速器进行了优化设计。The shift strategy of transmission has an important impact on automotive fuel economy. From the engine characteristic, some related characteristic surfaces of engine as well as working- curve of various gears are drawn in this article. A novel method to calculate fuel consumption is put forward and the optimal working curve of the engine is obtained. After that, the reasonable shift time is identified according to the various working curves. Finally, the transmission is redesigned based on the conclusion in hand.

关 键 词：特性曲面 工作线 换挡策略 优化 

分 类 号：U461[机械工程—车辆工程]