# US 4,391,260 A · Fluid pressure responsive valve device

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- Number: US 4,391,260 A
- Document ID: US4391260A
- Status: Granted
- Kind: A
- Application number: 06/214,786
- Filed: 1980-12-09
- Granted: 1983-07-05
- Earliest claimed: 1979-12-17
- Assignees: Aisin Seiki Kabushiki Kaisha
- Inventors: Kiyonobu Asahi
- Web page: https://patentgrep.com/patent/US4391260A

## CPC

- F02M 7/11: Altering float-chamber pressure (enriching the fuel-air mixture during starting by depressing float to flood carburettor F02M1/18)
- F02M 26/39: with two or more EGR valves disposed in series
- F02M 26/56: having pressure modulation valves
- Y10S 137/907: Vacuum-actuated valves
- Y10T 137/87764: Having fluid actuator
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A fluid pressure responsive valve device including a body having an inlet port, a signal pressure port and first and second outlet ports formed therein, a member disposed within the body being movable in response to fluid pressure communicated to the signal pressure port, a hollow rod secured to the movable member and including a part of a first passage member connecting the inlet port and the first outlet port, a second passage member for connecting the inlet port and the second outlet port and a plurality of valve members arranged within the first and second passages, respectively, to thereby control fluid communication through the first and second passage members in response to movement of the movable member.

## Claims

### Claim 1

A fluid pressure responsive valve device including an exhaust gas recirculation device, said fluid pressure responsive valve device comprising:
a body having an inlet port, at least one signal pressure port connected to an engine intake means and first and second outlet ports formed therein,
means disposed within said body movable in response to fluid pressure communicated to said signal pressure port,
a hollow rod secured to said movable means and comprising a part of a first passage member connecting said inlet port and said first outlet port,
a second passage member for connecting said inlet port and said second outlet port, said second passage member including restriction means, said second outlet port being in fluid communication with said exhaust gas recirculation device, and
a plurality of first valve means arranged within said first and second passages, respectively, to thereby control fluid communication through said first and second passage members in response to movement of said movable means,
wherein said exhaust gas recirculation device comprises a third passage member connected between an engine exhaust manifold and said intake means, said third passage member including parallel flow portions, wherein said exhaust gas recirculation device further comprises second valve means connected to said intake means for selectively closing said third passage member and third valve means connected to said third passage member for selectively closing one of said parallel flow portions of said third passage member.

### Claim 2 (depends on 1)

A fluid pressure responsive valve device as claimed in claim 1, said movable means comprising a diaphragm and a pair of plates secured to said diaphragm.

### Claim 3 (depends on 1)

A fluid pressure responsive device as set forth in claim 1, said movable means comprising:
a first diaphragm connected at its inner periphery to said hollow rod; and
a second diaphragm and a pair of plates secured to said diaphragm for securing said second diaphragm within said body.

### Claim 4 (depends on 2, 3)

A fluid pressure responsive valve device as set forth in claims 2 or 3, wherein one plate of said pair of plates is secured to an end portion of said hollow rod.

### Claim 5 (depends on 1, 2, 3)

A fluid pressure responsive valve device as set forth in claims 1, 2 or 3, said body comprising at least a first and second body member and said plurality of valve means comprising a first and second valve member disposed in said first and second body members, respectively.

### Claim 6 (depends on 5)

A fluid pressure responsive valve device as set forth in claim 5, further comprising a valve actuating member disposed in said body between one of said first and second valve members and said hollow rod.

### Claim 7 (depends on 1)

The device of claim 1 including a third outlet port in said body, said third outlet port being connected to a further fluid pressure controlled device.

### Claim 8 (depends on 1, 7)

The device of claims 1 or 7 which said at least one signal pressure port includes a signal pressure port connected between said intake means and said second passage member.