Valve for re-circulating exhaust gas
AssigneeHadsys, Inc.
InventorHideyuki Shinobu
Life of this patent
Estimating the term…
Abstract
When an armature is displaced by application of a voltage to an electromagnetic coil, a second elastic member contracts in opposition to the restorative force of the second elastic member, wherein a washer, the second elastic member, and the armature are displaced integrally. The armature abuts against the washer, and thereafter a first elastic member is compressed in a direction to close the valve, the first elastic member being compressed in opposition to its restorative force, whereby a main valve body is separated from a valve seat. As a result, exhaust gas is introduced through an inlet port and communicates with an outlet port.
Claims8
A valve for re-circulating exhaust gas, comprising:
- a body having a passage therein for re-circulating an exhaust gas, the body including an inlet port and an outlet port;
- a valve seat provided in said passage for recirculating the exhaust gas;
- a valve body for controlling the amount of exhaust gas flowing through said passage for re-circulating the exhaust gas by seating or separating the valve body from said valve seat;
- an armature for separating said valve body from said valve seat under the action of a current flowing through an electromagnetic coil;
- a first elastic member for normally driving said valve body in a direction to close said valve, one end of the first elastic member engaging with a holding plate provided on a valve shaft which constitutes a part of said valve body, and the other end of the first elastic member being secured in place;
- and
- a second elastic member for normally driving said valve body in a direction to open said valve, one end of the second elastic member engaging with said armature, and the other end thereof engaging with said holding plate.
Dependencies are inferred from the claim text.