Hydraulic unit for driving automobile power steering system, has stator provided with two vertical channels coaxial to motor shaft

摘要

A hydraulic system has a reservoir for a hydraulic fluid joined with a circulation system for driving an actuating element, and a pump arranged inside the reservoir and for feeding the hydraulic fluid according to demand through the circulation system. The cooling system is formed from at least one channel system (14) which runs from the reservoir (2) through the partition (4) into the stator (6) of the motor and then back again, so that the pump (3) sucks the fluid through the channel system. The stator has at least two vertical channels which extend coaxially to the motor shaft (10). An Independent claim is included for using a system for driving a power steering system or an air-conditioner compressor