自动变速器由液力变矩器、齿轮变速器、液压装置、电控装置和壳体等部分组成。在使用中,液力变矩器、电控装置和壳体的故障率很低,自动变速器出现故障一般都是在齿轮变速器与液压装置中。液压装置有故障不仅可能直接导致齿轮变速器损坏,而且还会直接影响自动变速器的性能和寿命。因此,液压装置的检测在自动变速器的故障诊断、修复与性能试验中显得非常重要。 Automatic transmission from the torque converter, gear transmission, hydraulic devices, electronic control devices and shell parts. In use, the torque converter, electric control device and housing failure rate is very low, automatic transmission failure are generally in the gear transmission and hydraulic equipment. Failure of the hydraulics not only directly causes damage to the gearbox but also directly affects the performance and life of the automatic transmission. Therefore, the detection of hydraulic devices in the automatic transmission fault diagnosis, repair and performance test is very important.