Aisin Seiki Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Kabushiki Kaisha

Hiroshi Kondou

Toshio Onuma

Katsuhiko Hattori

Hiroshi Naito

Mutsumi Miyashiro

Youitirou Arai

A pressure vibration damping device in a liquid supply passage for supplying a liquid from a pump to a hydraulic device such as a fluid pressure type suspension of a vehicle, including a pressure pulse absorbing means adapted to be able to accept and return a small amount of the liquid from and to said liquid supply passage so as to absorb momentary changes in the flow rate of the liquid in the liquid supply passage, and a liquid column vibration damping means adapted to be able to apply a substantial flow resistance principally to a high velocity flow of the liquid in the liquid supply passage at a part thereof between the pump and the pressure pulse absorbing means, the high flow velocity being due to pulse flows of the liquid induced by a resonance of pulsating output of the pump and the pressure pulse absorbing means and substantially higher than a mean flow velocity of the liquid corresponding to a normal rate of supply of the liquid through the liquid supply passage.

Pressure vibration damping device in combination of liquid column

Growing community of inventors

Nagoya, Japan

Hiroshi Kondou