Fuel vapor managment valve

Details Fuel vapor managment valve Fuel vapor managment valve

1999-04-27

2000-01-18

Lee, Kevin

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 45, 251118, F16K 3140, F02M 3302

Patent

active

060151331

ABSTRACT:
An electrically controlled vacuum operated fuel vapor canister purge valve having a regulator valve subassembly with a vacuum signal chamber on one side of a pressure responsive power diaphragm which moves a regulator valve obturator for controlling flow from a vapor inlet passage to a vapor outlet passage for connection to an engine inlet. The vacuum signal chamber has a vacuum signal connection port and a recess or well with an atmospheric vent port and resiliently deflectable locking tab. A solenoid operated atmospheric bleed valve has a boss with a restrictor outlet which is quick-connected and seated in the well for electrically controlling vent flow into the vacuum signal chamber. The restrictor limits atmospheric bleed flow to attenuate the effects of sudden changes in the vacuum signal.

REFERENCES:
patent: 5277167 (1994-01-01), DeLand et al.
patent: 5429099 (1995-07-01), DeLand
patent: 5467960 (1995-11-01), Morris et al.
patent: 5853018 (1998-12-01), DeLand et al.
patent: 5855355 (1999-01-01), Grunert et al.
patent: 5878725 (1999-03-01), Osterbrink

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