Hydraulisches Servolenksystem

Details

Veröffentlichungs-Nr.

EP2444299

Aktenzeichen

EP11185864

Anmeldetag

20. Oktober 2011

Veröffentlichung

20. August 2014

Erteilung

20. August 2014

Rechtsraum

EP

IPC

B62D5/065B62D5/09

Abstract

A hydraulic power steering system (1) includes: a hydraulic cylinder (21) in which an interior is partitioned into first and second hydraulic chambers (43,44) by a piston (42) on a steered shaft (16); a variable displacement electric pump (22) that supplies hydraulic fluid to the hydraulic cylinder (21); a selector valve (23) selectively set in a mode in which the hydraulic fluid is supplied to the first hydraulic chamber (43) and drained from the second hydraulic chamber (44) or in a mode in which the hydraulic fluid is supplied to the second hydraulic chamber (44) and drained from the first hydraulic chamber (43); a detector (32,33,34) that detects torque, steering angle, and/or vehicle speed; and a controller (31) that sets, based on the operation state detected by the detector (32,33,34), a fluid supply-drain manner in which the hydraulic fluid is supplied to and drained from the hydraulic cylinder (21), and controls the operation mode of the selector valve (23) and an amount of hydraulic fluid that is supplied from the electric pump (22) based on the set fluid supply-drain manner.

Anmelder

Firma

JTEKT Corporation

Land

🇯🇵 Japan

Fachgebiete