Mitsubishi Denki Kabushiki Kaisha

Shinichi Kawasaki

Sotsuo Miyoshi

Toshihiko Miyake

Tohru Tanaka

Hidetoshi Okada

A valve has a housing, a shaft with a valve disc, and a sliding shaft support portion along which the shaft slides, wherein the sliding shaft support portion is provided with a seal member movable and deformable in a certain range.

Valve, exhaust gas recirculation control valve and valve assembling method

A flow quantity control valve includes second spring holder that is fixed within housing and holds one end of valve spring which is located on a side of valve disk. The second spring holder is a roughly cylindrical member made of a material with a lower thermal conductivity than that of the housingmade of cast iron; and is composed of roughly circular internal bottom, stay portion that is a body portion extending from the outer periphery of the internal bottom and surrounding the valve spring, a through hole formed in a center of the internal bottom and having a larger internal diameter than the external diameter of surrounding wall constituting another through hole of the housing and flange portion radially and outwardly extending from a upper part of the stay portion and having a roughly rectangular periphery portion.

Flow quantity control valve

An exhaust gas re-circulation valve which allows the accurate control of high temperature and pressure exhaust gas flowing through the engine exhaust gas re-circulation passage of a turbo diesel vehicle or the like. Valve seats,, valves,and a valve shaft are mounted on a valve housing,and an adjustable adjusting mechanism,is provided which allows both the first valve,and the first valve seat,and the second valve,and the second valve seat,to close in abutment by displacement or deformation. In this way even if there is an irregularity in the process or assembly accuracy of the components of the exhaust gas re-circulation valve, it can be absorbed by the adjustable mechanism,. As a result the formation of gaps between the valve and the valve seat as a result of irregularities in the in the process or assembly accuracy of the components of the exhaust gas re-circulation valve can be prevented and valve accuracy can be improved.

Growing community of inventors

Tokyo, Japan

Shinichi Kawasaki