Sub Electric Oil Pump

The Sub Electric Oil Pump contains a "Three-phase brushless synchronous motors".

Courtesy of NISSAN NORTH AMERICA, INC.
Sub Electric Oil Pump is operated with the signal from the Sub Electric Oil Pump inverter during stop/start operation. During an engine stop according to the stop/start system, the mechanical oil pump stops as well. For this reason, the Sub Electric Oil Pump generates oil pressure for engaging the clutch of automatic transmission as a substitute for the mechanical oil pump.