Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1992-01-30
1992-12-29
Miller, Carl S.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123516, F02M 3302
Patent
active
051742659
ABSTRACT:
A bypass pipe 10 which bypasses the first and second check valves 13a, 13b of an air breather pipe 8 for the communication between the upper space of a fuel tank 3 and an absorbent 2 contained in a canister 1 is disposed including a first change-over valve 12a which is opened only during the operation of a motor vehicle, while that second vent pipe 16 of the canister 1 which is openable to the atmosphere is furnished with a second change-over valve 12b which enlarges a ventilating cross-sectional area only during the operation of the vehicle. During the running of the vehicle, accordingly, the second vent pipe 16 is opened, and the first and second check valves 13a, 13b interposed in the air breather pipe 8 are invalidated to bring the fuel tank 3 and the canister 1 into direct communication.
REFERENCES:
patent: 4527532 (1985-07-01), Kasai et al.
patent: 4630581 (1986-12-01), Shibata
patent: 4641623 (1987-02-01), Hamburg
patent: 4700683 (1987-10-01), Uranishi
patent: 4702216 (1987-10-01), Haruta
patent: 4815436 (1989-03-01), Sasaki
patent: 4951643 (1990-08-01), Sato
patent: 5085197 (1992-02-01), Mader
Fuji Jukogyo Kabushiki Kaisha
Miller Carl S.
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