COOLING WATER PUMP, PREFERABLY FOR MOTOR CAR ENGINES

摘要

: A pump unit for liquid-cooled internal combustion engines preferably for vehicle engines includes a pump unit bearing housing, an impeller, and a drive member operatively connected to the impeller to rotate the same, forming a rotatable assembly. Bearing means support the drive member for rotation relative to the housing and a seal is adapted to seal an annular space between the rotatable assembly and the housing. The axial length of the pump unit as measured from the impeller to the oppositely located end of the drive member and the pitch diameter of the bearing are of about the same order of magnitude.