OIL PUMP CONSTRUCTION/OPERATION


BHE051319220T02

Construction

• The oil pump, mounted behind the torque converter, is driven directly by the torque converter.

• Inner and outer rotors are built into the pump housing in the oil pump.

• The inner rotor is driven by the torque converter in the same rotational direction as the engine.

1
Torque converter
2
Oil pump
3
Oil pump housing
4
Outer rotor
5
Inner rotor
6
Oil pump cover

Operation

• When the inner rotor in the oil pump rotates, ATF is drawn from the oil pan to the oil pump and then discharged to the pressure regulator valve.

• The amount of ATF discharged is proportional to the rotational speed of the torque converter.

1
Pressure regulator valve
2
Out
3
In