Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1996-07-22
1997-10-28
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123516, 137587, 137550, F02M 3302
Patent
active
056808488
ABSTRACT:
A vaporized fuel control valve for a fuel tank containing fuel to be supplied to an internal combustion engine, having a casing fastened to an upper surface of the fuel tank, and a float valve is housed in the casing such that it moves upward toward a seat in response to fuel level in the fuel tank. A diaphragm valve having a diaphragm is placed in the casing above the float valve for separating an interior of the casing to a first chamber communicating with a filler pipe of the fuel tank, and a second chamber communicating with the fuel tank through the float valve. The diaphragm valve opens to connect the second chamber with a canister such that vaporized fuel forced out of the fuel tank flows along a path through the float valve to the canister when the first chamber is supplied with atmospheric pressure, unless the float valve seats on the seat. In the valve, an intercepter such as a filter is placed in the path to intercept a fuel spray produced due to an impact when the float valve has seated on the seat, so as the fuel spray not to adhere to the diaphragm. As the interceptor, various partitions different in shape are used. With the arrangement, adherence of sprayed fuel, which otherwise degrades the diaphragm, is prevented.
REFERENCES:
patent: 4241873 (1980-12-01), Satomoto
patent: 4951878 (1990-08-01), Casey et al.
patent: 5156178 (1992-10-01), Harris
patent: 5163468 (1992-11-01), Robinson et al.
patent: 5261439 (1993-11-01), Harris
patent: 5404907 (1995-04-01), Benjey et al.
Hidano Koichi
Horiuchi Masaaki
Katoh Takaaki
Nakajima Takeaki
Suzuki Takeshi
Honda Giken Kogyo Kabushiki Kaisha
Moulis Thomas N.
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