Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1986-03-10
1987-10-20
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123520, F02M 3302
Patent
active
047006838
ABSTRACT:
Device for purging evaporated fuel captured by a charcoal canister from a fuel supply system of an engine. A purge path connects the charcoal canister to an engine intake path, an ON-OFF valve and a fixed throttle are arranged in parallel in the purge path, and a solenoid valve is provided in the purge path between the engine intake path and the parallel ON-OFF valve and fixed throttle. The solenoid valve is opened only at low engine speeds and low engine temperatures. The ON-OFF valve is opened at engine loads higher than a predetermined engine load and is closed at engine loads lower than the predetermined engine load. In this way, purging of the evaporated fuel is cut off at low engine speeds and low engine temperatures, purging is occurs small quantity at low engine loads, and purging is increased at high engine loads, providing increased capturing ability of the charcoal canister without impairing drivability.
REFERENCES:
patent: 4308842 (1982-01-01), Watanabe
patent: 4377142 (1983-03-01), Otsuka
patent: 4475522 (1984-10-01), Oonaka
patent: 4495904 (1985-01-01), Sakaino
patent: 4527532 (1985-07-01), Kasai
Itou Takaaki
Uranishi Kouji
Cox Ronald B.
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Device for purging evaporated fuel captured by a charcoal canist does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for purging evaporated fuel captured by a charcoal canist, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for purging evaporated fuel captured by a charcoal canist will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1606266