Evaporative fuel-processing system for internal combustion engin

Details Evaporative fuel-processing system for internal combustion engin Evaporative fuel-processing system for internal combustion engin

1996-08-05

1998-03-17

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123198D, 123519, F02M 3302

Patent

active

057275300

ABSTRACT:
An evaporative fuel-processing system for an internal combustion engine for use in a vehicle. A passage extends between the fuel tank and the intake passage of the engine, for guiding evaporative fuel generated in the fuel tank, for processing, and across which a canister having an air communication port is arranged. A drain passage is connected to the air communication port, to which a valve casing is connected. A first passage is connected to the valve casing, and a first valve is associated with the first passage and the valve casing, for allowing air to flow into the canister through the first passage, the valve casing and the air communication port and for inhibiting evaporative fuel from being discharged from the canister through the air communication port, the valve casing and the first passage. A second passage is connected to the valve casing, and a second valve is associated with the second passage and the valve casing, for inhibiting air from flowing into the canister through the second passage, the valve casing and the air communication port and for allowing evaporative fuel to be discharged from the canister through the air communication port, the valve casing, and the second passage. At least one of the first and second valves is bypassed.

REFERENCES:
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patent: 4727955 (1988-03-01), Honda et al.
patent: 4758141 (1988-07-01), Radermacher
patent: 4787643 (1988-11-01), Shirata
patent: 5060620 (1991-10-01), Oslapas
patent: 5189877 (1993-03-01), Wells et al.
patent: 5193512 (1993-03-01), Steinbrenner et al.
patent: 5224455 (1993-07-01), Ogasawara

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