A hydraulic pump for a power steering system

摘要

A hydraulic pump Ä10Ü for use in a power steering system includes a power steering fluid chamber Ä26Ü for receiving power steering fluid from a fluid source. The power steering fluid chamber Ä26Ü is in fluid communication with a first fluid conduit Ä40Ü and a second fluid conduit Ä46Ü each of which has different lengths. A pressure valve attenuator Ä52Ü has two ports, one in communication with the first fluid conduit Ä40Ü and one in communication with the second fluid conduit Ä46Ü for receiving power steering fluid from the power steering fluid chamber Ä28Ü such that fluid borne noise in the power steering system is minimised. <IMAGE>