Toyota Jidosha Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Shinji Matsuda

Toshio Onuma

Kunihito Sato

Hiroyuki Ikemoto

Osamu Komazawa

Tsukasa Watanabe

Masahiro Fukuta

A pressure control valve delivers a pressure which is proportional to a current level chosen to energize a solenoid therein to a shock absorber of a suspension. A spool in the valve has an annular groove for communicating an output port to a high pressure port or a low pressure port selectively. There are conical surfaces or inclined surfaces at edges of lands adjacent to the groove, which incline from annular surfaces of the lands toward the bottom of the groove. The inclined surfaces slow down a change of the flow rate from the high pressure port to the output port and from the output port to the low pressure port when the annular groove communicates with the high pressure port and the low pressure port respectively.

Pressure control valve device

Growing community of inventors

Toyota, Japan

Shinji Matsuda