双离合自动变速器首次启动排气策略研究  

Research on Air-purge Strategy for Dual-clutch Automatic Transmission at Initial Start-up

作　　者：杨志华 YANG Zhihua

机构地区：[1]上汽集团创新研究开发总院,上海201804

出　　处：《上海汽车》2024年第7期49-53,共5页Shanghai Auto

摘　　要：某湿式双离合自动变速器存在发动机停机后,首次启动1挡升2挡时,偶数离合器压力跟随较差的问题,导致整车起步缓慢、换挡顿挫。文章结合仿真分析找出问题产生的原因,并通过台架测试对排气效果进行验证,最终实车验证了排气策略的有效性,解决了发动机停机后首次1挡升2挡的换挡问题。After the engine shut down and started for the first time,there is a problem with the poor follow-up of the even clutch pressure when shifting from 1st gear to 2nd gear in a certain wet dual-clutch automatic transmission,resulting in slow vehicle start-up and shifting jerkiness.By com⁃bining simulation analysis,the cause of the problem is identified and the air-purge effect is verified through bench testing.Finally,the effectiveness of the air-purge strategy is verified through on-road testing,solving the shifting problem from 1st gear to 2nd gear after the engine is shut down and started for the first time.

关 键 词：双离合器 变速器 排气 

分 类 号：U463.212[机械工程—车辆工程]