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4挡油路变速器以3挡运行后当满足升4挡条件时,控制单元便又发出4挡换挡指令信息,此时真实的输出是这样的:首先要完成的又是K1离合器和K2离合器的交替切换过程,同样为了避免换挡点瞬间出现动力流中断现象,K1和K2的切换依旧还是通过重叠方式来实现的,也就是K1离合器在释放过程中和K2离合器在接合过程中出现一个短暂的重叠过程,它是发生在重叠扭矩不大、重叠时间很短的情况下,因此只需适当的调整一下发动机输出扭矩,这样就不会形成扭矩的干预而引起的换挡品质下降;完成离合器交接后就像传递接力棒一样,K2离合器再次替代K1离合器在传递发动机扭矩,
4 blocked oil transmission to run after the third gear to meet the conditions of 4 block, the control unit will issue a 4-gear shift command information, then the real output is this: the first thing to complete is the K1 clutch and K2 clutch The same switching process, the same shift point in order to avoid the instantaneous power flow interruption phenomenon, K1 and K2 switching is still achieved through the overlap, that is, K1 clutch in the release process and K2 clutch in the process of joining a transient Of the overlap process, it occurs in the overlap torque is not small, the overlap time is very short, so only need to properly adjust the engine output torque, so that the torque will not interfere with the shift caused by the decline in quality; complete clutch After the transfer is like passing the baton, K2 clutch once again replace the K1 clutch in the transmission of engine torque,