公开(公告)号：US20020192081A1

公开(公告)日：2002-12-19

申请号：US10166080

申请日：2002-06-11

Applicant: UNISIA JKC STEERING SYSTEMS CO., LTD

Inventor： Kunio Okada ,  Yukihisa Kosugi ,  Minoru Masaki ,  Takashi Nakamura

IPC: F04B049/00

CPC classification number: F04C14/226 ,  B62D5/062 ,  B62D5/065 ,  F04C14/24 ,  F04C18/3442

Abstract: First and second fluid pressure chambers are formed in both sides of a movement direction of a cam ring swingably placed within a pump body. A spool of a control valve is moved due to a pressure difference between the front and back of a metering orifice. Fluid pressures of the fluid pressure chambers are controlled. The cam ring is swung. Further, a solenoid for giving thrust in an axial direction thereof to the spool of the control valve and electronic control device for controlling driving of the solenoid are provided. The electronic control device has a steering sensor and determines a steering direction based on a signal from the steering sensor and also calculates a steering speed to the steering direction and controls a driving current of the solenoid in response to this steering speed and changes a discharge flow rate of a pump.

Abstract translation: 第一和第二流体压力室形成在可摆动地放置在泵体内的凸轮环的运动方向的两侧。 控制阀的阀芯由于计量孔的前后的压差而移动。 控制流体压力室的流体压力。 凸轮环摆动。 此外，提供了一种用于向其控制阀的线轴方向推力的螺线管和用于控制螺线管的驱动的电子控制装置。 电子控制装置具有转向传感器，并且基于来自转向传感器的信号确定转向方向，并且还计算转向方向的转向速度，并响应于该转向速度控制螺线管的驱动电流并改变排出流量 泵的速率。