Clutch hydraulic system for vehicle

A vehicle clutch hydraulic system for a vehicle, comprising:

• a mechanical oil pump configured to be actuated by a rotary drive shaft of a drive system;
• an electric oil pump configured to be actuated by an electric motor independent of actuation of the mechanical oil pump;
• a clutch configured to be disposed in the drive system, which operates the mechanical oil pump and the electric oil pump as a hydraulic power source for the clutch;
• a control valve unit configured to provide engagement oil pressure and lubricating oil pressure to the clutch based on a pump discharge pressure from the hydraulic power source;
• a main pump oil passage fluidly connecting the mechanical oil pump to the control valve unit;
• and
• a sub-pump oil passage fluidly connecting the electric oil pump to a clutch oil passage into which an oil passage outlet opens at an inside location closer to a clutch rotational axis than a clutch oil chamber of the clutch, and the clutch oil passage supplying hydraulic oil to the clutch oil chamber, which is disposed on an outer diameter side of the oil passage outlet with respect to the clutch rotational axis.