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众所周知,机械式有级传动机构有三个主要缺点:(1)换档时必须切断发动机至行走机构的功率流;(2)只能用有限的档次来满足全部运行条件的需要;(3)未被挂上档的轴与齿轮产生空转功率损失。 无级传动则不必切断功率流就能适应各种不同运行条件的需要。
It is well-known that there are three major disadvantages of a mechanical stepped transmission: (1) the power flow from the engine to the running gear must be switched off during the shift; (2) the need to meet all operating conditions with only a limited number of grades; (3) Is linked to the gear shaft and gear idle power loss. Stepless transmission without having to cut off the power flow can adapt to the needs of a variety of different operating conditions.