Canister vent/purge valve

Details Canister vent/purge valve Canister vent/purge valve

1997-10-07

1999-03-09

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

123519, 251 3001, 137588, F02M 3304

Patent

active

058787259

ABSTRACT:
A combination vent valve/purge valve apparatus (10) for an automotive fuel vapor recovery system canister (14) comprises a purge valve (26) and a vent valve (16) in a single housing. When open, the vent valve (16) allows outside air to enter the canister (14). The purge valve (26), when open, allows fuel vapor to flow from the canister (14) into a vacuum source (12). A gas channel (28, 130, 168) extends between a vent chamber (18) within the vent valve (16) and a purge chamber (28) within the purge valve (26). When the purge valve (26) is open and a purge plunger (86) within the purge chamber (28) is positioned away from the gas channel (28, 130, 168), the manifold vacuum draws air from one side of a diaphragm (126) within the vent chamber (18) drawing the diaphragm (126) and a vent plunger (152) downward against a spring to close the vent valve (16). When the purge plunger (86) is positioned to block the gas channel (28, 130, 168), the spring forces the vent plunger (152) upward to open the vent valve (16). Therefore, a single actuator (36) is able to directly control purge closure position and to indirectly control vent closure position to either purge the canister (14) or evacuate the canister (14) to prepare for a leak check.

REFERENCES:
patent: 4953514 (1990-09-01), Beicht et al.
patent: 5117797 (1992-06-01), Telep et al.
patent: 5183022 (1993-02-01), Cook
patent: 5199404 (1993-04-01), Cook et al.
patent: 5211151 (1993-05-01), Nakajima et al.
patent: 5277167 (1994-01-01), DeLand et al.
patent: 5289811 (1994-03-01), Covert et al.
patent: 5411004 (1995-05-01), Busato et al.
patent: 5417402 (1995-05-01), Speybroeck
patent: 5429099 (1995-07-01), DeLand
patent: 5437257 (1995-08-01), Giacomazzi et al.
patent: 5450833 (1995-09-01), Denz et al.
patent: 5460141 (1995-10-01), Denz et al.
patent: 5467960 (1995-11-01), Morris et al.
patent: 5469886 (1995-11-01), Noya
patent: 5479904 (1996-01-01), Fujimori et al.
patent: 5499614 (1996-03-01), Busato et al.
patent: 5542397 (1996-08-01), Takahata et al.
patent: 5551406 (1996-09-01), Everingham et al.
patent: 5560347 (1996-10-01), Reddy et al.
patent: 5562084 (1996-10-01), Shimamura
patent: 5562757 (1996-10-01), Brun et al.
patent: 5609135 (1997-03-01), Ogawa et al.
patent: 5613477 (1997-03-01), Maeda
patent: 5614665 (1997-03-01), Curran et al.
patent: 5623911 (1997-04-01), Kiyomiya et al.
patent: 5629477 (1997-05-01), Ito
patent: 5630403 (1997-05-01), Van Kampen et al.
patent: 5632251 (1997-05-01), Ishikawa
patent: 5635630 (1997-06-01), Dawson et al.

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