Electrohydraulic steering system having electric motor and control unit, servo pump that applies hydraulic fluid vol. flow to 1 of 2 servo cylinder chambers depending on drive direction

摘要

The system has a servo cylinder (10) with two chambers (14,16), an electric motor (22), a servo pump (20) connected to the electric motor and directly connected to the servo cylinder and a control unit (34) that controls the electric motor. The servo pump applies a vol. flow of hydraulic fluid to one or other chamber of the servo cylinder depending on the drive direction.