Canister vent valve having at least one sensor and single electr

Details Canister vent valve having at least one sensor and single electr Canister vent valve having at least one sensor and single electr

1997-11-21

2000-04-18

Miller, Carl S.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123458, F02M 3302

Patent

active

060502452

ABSTRACT:
A vapor collection canister vent valve contains both an electric pressure sensor for measuring evaporative emission space pressure during a diagnostic test and an electric actuator for operating the vent valve closed during a diagnostic test. Use of the valve in an evaporative emission control system reduces the number of connections, both electrical and fluid, that are required to install the valve in a system. The remote location of the pressure sensor damps the effect of pressure transients, such as those due to tank fuel slosh, on the sensor.

REFERENCES:
patent: 4768548 (1988-09-01), Maurer
patent: 4901702 (1990-02-01), Beicht
patent: 5284121 (1994-02-01), Abe
patent: 5388607 (1995-02-01), Ramaker
patent: 5524593 (1996-06-01), Denne
patent: 5630403 (1997-05-01), Van Kampen
patent: 5657962 (1997-08-01), Neron
patent: 5727532 (1998-03-01), Everingham

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