Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1991-09-12
1992-09-29
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123520, 123198D, 123494, 123518, F02M 3302
Patent
active
051506890
ABSTRACT:
A fuel tank vapor control system is provided with an improved device for warning of malfunction of a canister. The device judges on malfunction of the canister on the basis of whether opening of a purge passage is effective for causing an inside temperature fall of the canister. In order to prevent an erroneous judgement on malfunction of the canister on the basis of an overflow condition of the canister, a purge passage is first closed so that the canister fully adsorbs hydrocarbon vapors from a fuel tank and then opened so that an inside temperature fall of the canister occurs. Opening and closing of the purge passage is repeated for several times so that a reliable judgement on malfunction of the canister is formed after lapse of a certain time and under a different operating condition of the canister.
REFERENCES:
patent: 4176639 (1979-12-01), Shinoda et al.
patent: 4343281 (1982-08-01), Uozumi et al.
patent: 4846135 (1989-07-01), Tiphaine
patent: 4949695 (1990-08-01), Uranishi et al.
patent: 4962744 (1990-10-01), Uranishi et al.
patent: 5088466 (1992-02-01), Tada
patent: 5099439 (1992-03-01), Saito
Yano Hirofumi
Yokoi Seiji
Cross E. Rollins
Moulis Thomas N.
Nissan Motor Co,. Ltd.
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