单向离合器对自动变速器性能影响

单向离合器可以单向接合2个部件，单向离合器在分离时能产生超越作用。文章介绍了单向离合器在自动变速器中的作用和用于自动变速器的限制条件，指出具有超越作用的单向离合器，在齿轮变速机构中能够消除降挡冲击，因而在自动变速器中得到应用。使用单向离合器会使汽车失去发动机制动的作用，必要时要取消单向离合器的作用。

The Function of the One-way Clutch and the Influence to the Performance of the Autotransmission

The one-way clutch can connect two parts together and a transcendental action will be emerged when the one-way clutch is disengaged. This paper introduces the operation of the one-way clutch and limitation used in the auto transmission. The one-way clutch with transcendental action can dispel the down-shift shock in the gear shift, so it is applied in the autotransmission. The automobile will lose engine-brake action when the one-way clutch is acting, the action of the one-way clutch should be canceled when necessary.