Patent ID: 6588381
Filing Date: 2003-07-08
Classification: F01L,F01P,F02B,F04D,F05D

Abstract:
A coolant pump for use with an internal combustion engine having a crankshaft and a camshaft driven by the crankshaft, said coolant pump comprising:a pump housing fixedly mountable to the engine and including an inlet opening to receive coolant and an outlet opening to discharge coolant; an impeller shaft mounted directly to the camshaft so as to be concentrically rotatably driven thereby, said impeller shaft extending into said housing in a sealing engagement and in an unsupported relation; a pump impeller operatively mounted to the impeller shaft within the pump housing, the pump impeller rotatable to draw the coolant into the pump housing through the inlet opening and discharge the coolant at a higher pressure through the outlet opening; and a damper assembly disposed between the impeller shaft and the pump impeller, the damper assembly coupling the impeller shaft to the pump impeller so that powered rotation of the impeller shaft rotates the pump impeller.