VARIABLE OIL PUMP FOR VEHICLE

摘要

PURPOSE: A variable oil pump for vehicle is provided to increase the suction flow rate and improve the fuel efficiency of the vehicle by removing or minimizing intake resistances when drawing in a large amount of oil through an inlet. CONSTITUTION: A variable oil pump for vehicle includes a pump housing(1), a housing cover which is coupled to the pump housing. The variable oil pump for vehicle includes an inlet(8), an outlet(9), a housing flow passage(20) which is formed in a part connected to the inlet in the pump housing to extent an oil suction path, and a cover flow passage which is formed in a position opposed to the housing flow passage in the housing cover to extend the oil suction path. The housing flow passage and the cover flow passage are formed in the same shape. The housing flow passage includes a main chamber(21) which is formed by indenting the internal surface of a spring chamber(6) in which a pressure control spring is installed and a support chamber(22) which is formed by indenting the inner surface of the pump housing into an arc shape along the rotational radius around an axial hole(13) formed in the pump housing and connected to the main chamber.