闭合油路回油道
loop circuit return passage
变矩器注油回路
torque converter charging circuit
地面驱动回路油流
ground drive circuit flow
断油回路润滑油返回
fuel shutoff circuit oil return
发动机机油油路简图
engine oil flow schematic
发动机润滑油路油压低
low engine oil pressure circuit
回油路堵塞
congestion of back oil road