Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1991-11-01
1993-02-02
Miller, Carl S.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123519, F02M 3302
Patent
active
051830230
ABSTRACT:
The canister's inlet port is communicated to the fuel tank headspace through a first conduit, its outlet port is communicated through a second conduit containing the purge control valve to a location in the air intake system that is downstream of the throttle plate, and its atmospheric vent port is communicated through a third conduit to a location in the air intake system that is between the air filter and the supercharger, rather than directly to atmosphere. During non-supercharged operation of the engine, vapors in the canister are purged through the second conduit and purge control valve in the usual manner and air enters the canister through the third conduit. During supercharged operation, the purge flow is reversed such that purged vapors pass through the third conduit while the purge valve maintains control over the purge flow.
REFERENCES:
patent: 4527532 (1985-07-01), Kasai
patent: 4700683 (1987-10-01), Uranishi
patent: 4763634 (1988-08-01), Morozumi
patent: 4862856 (1989-09-01), Yokoe
patent: 5005550 (1991-04-01), Bugin
Boller George L.
Miller Carl S.
Siemens Automotive Limited
Wells Russel C.
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