PURPOSE: To make it possible to effectively recover the energy possessed by high pressure working fluid by so constructing to open a relief means and to guide the working fluid to a supply passage when the pressure inside a connecting passage leading to an actuator in a suspension exceeds a specified value.
CONSTITUTION: An actuator 58 in a suspension is connected between a suspension arm and a car body, and a working fluid chamber 62 formed by a piston 64 is connected to a pump 14 through a connecting passage 54, a pressure control valve 18, a working fluid supply passage 167, etc. It is also connected to an accumulator 24 through a throttle 74. In this case, the connecting passage 54 and the working fluid supply passage 16 are mutually communicated and connected with a return passage 78, and a relief valve 80 is installed halfway of the return passage 78. The relief valve 80 is set to be opened when the pressure inside the connecting passage 54 exceeds a specified set pressure. With the opening of the valve, part of the working fluid in the connecting passage 54 is introduced into the working fluid supply passage 16.
TAKEMA SHUICHI
YONEKAWA TAKASHI
HATTORI KATSUHIKO
KOMAZAWA OSAMU
ISOTANI SHIGETAKA
HAYASHI KENJI
TOYOTA CENTRAL RES & DEV
AISIN SEIKI
| JPS63152706U | 1988-10-06 |