Patent Number: 8,584,791

Title: Hydraulic power steering apparatus

Abstract: A hydraulic power steering apparatus assists in steering of a vehicle with a hydraulic cylinder. The hydraulic power steering apparatus includes a flow control valve, a steering torque sensor, a steering angle sensor, a vehicle speed sensor, and an ECU. The flow control valve changes the supply/drainage amount of hydraulic fluid for the hydraulic cylinder. The ECU sets a supply/drainage mode for supplying/draining the hydraulic fluid with respect to the hydraulic cylinder based on detection results from the aforementioned sensors and controls the flow control valve in accordance with the supply/drainage mode of the hydraulic fluid.

Inventors: Sakamaki; Masahiko (Yao, JP), Tomagou; Yasuhiro (Yao, JP), Shiina; Akihiko (Kashihara, JP), Ozaki; Tetsuya (Kitakatsuragi-gun, JP), Kubo; Ryouichi (Kashihara, JP)

Assignee: JTEKT Corporation

International Classification: B62D 5/06 (20060101)

Expiration Date: 1/19/12018