Sub Electric Oil Pump
WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
- The sub electric oil pump contains a "Three-phase brushless synchronous motors".
- Sub electric oil pump is controlled by sub electric oil pump inverter. It secures necessary hydraulic pressure for transmission on behalf of mechanical oil pump.
- Supply of release hydraulic pressure for clutch 1
When the input speed of transmission is low, the speed of mechanical oil pump in transmission is low. Hydraulic pressure for CSC (concentric slave cylinder) to release clutch 1 cannot be secured. Therefore, hydraulic pressure for CSC (concentric slave cylinder) is secured by sub electric oil pump on behalf of mechanical oil pump.
- Supply of engagement hydraulic pressure for clutch 2
Mechanical oil pump in transmission does not operate during idling stop operation and hydraulic pressure is not generated. Thus engagement of clutch/brake component in transmission becomes impossible. Therefore, hydraulic pressure is secured for control valve by sub electric oil pump on behalf of mechanical oil pump.
- Supply of release hydraulic pressure for clutch 1