D155型推土机是日本小松公司生产的,我国上海彭浦机器厂生产的上海320型推土机传动液压系统也与该机型一样。 D155型推土机液力变矩、变速油路系统如图所示。液压泵2排出的传动油分两路:一路以0.7MPa的压力向液力变矩系统供油,进入液力变矩器11,液力变矩器的出油经冷却器14后少部分供变速箱润滑,大部分回后桥箱20,回油泵19将变矩器内泄油排入后桥箱;另一 D155 bulldozer is produced by Japan Komatsu, Shanghai Pengpu Machinery Factory in China Shanghai 320 bulldozer transmission hydraulic system with the same. D155 bulldozer hydraulic torque, variable speed oil system as shown. The hydraulic oil discharged from the hydraulic pump 2 is divided into two paths: all the way to 0.7MPa pressure to the torque converter system, into the hydraulic torque converter 11, the hydraulic torque converter oil cooler 14 by a small part for the gear Box lubrication, most of the back to the bridge box 20, back to the pump 19 will drain the torque converter into the rear axle box; the other