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Starting with the basic control principles of the two main pressures for gearshift in AT—— pressure at throttle valves and speed control pressure, this paper expatiates on the controlling and regulating process of the output characteristics and discusses the influential factors in the regulating process.

从自动变速器换档控制的两个主要压力———节气门阀压力和速控压力的基本控制原理着手 ,详细阐述了二者输出特性的控制与调节过程 ,讨论了它们调节过程中的影响因素。