Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1993-08-25
1994-07-12
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123198D, F02M 3302
Patent
active
053278739
ABSTRACT:
A malfunction sensing apparatus for a fuel vapor control system includes a fuel tank and a canister containing an adsorbent for adsorbing fuel vapor. The canister has an inlet connected to the fuel tank and an outlet. A purge control valve is connected to the outlet for connecting and disconnecting the outlet of the canister from the air intake pipe of an engine. A pressure sensor senses the internal pressure of the fuel tank. A malfunction sensing means responsive to the pressure sensor senses a malfunction when the purge control valve is open and the pressure sensed by the pressure sensor is above a prescribed value. A prohibiting means senses the rate of change and/or the magnitude of the pressure sensed by the pressure sensor with the purge control valve closed and prohibits malfunction sensing by the malfunction sensing means when the rate of change of the pressure exceeds a prescribed rate and/or the magnitude of the pressure exceeds a prescribed value.
REFERENCES:
patent: 4949695 (1990-08-01), Uranishi et al.
patent: 5143035 (1992-09-01), Kayanuma
patent: 5146902 (1992-09-01), Cook et al.
patent: 5193512 (1993-03-01), Steinbrenner
patent: 5199442 (1993-03-01), Blumenstock et al.
patent: 5220896 (1993-06-01), Blumenstock et al.
patent: 5230319 (1993-07-01), Otsuka et al.
patent: 5245973 (1993-09-01), Otsuka et al.
patent: 5261379 (1993-11-01), Lipinski et al.
patent: 5265577 (1993-11-01), Denz et al.
patent: 5269277 (1993-12-01), Kuroda et al.
California Air Resources Board, Technical Support Document, Jul. 26, 1991, columns 11-15.
Fujimoto Shinya
Ohuchi Hirofumi
Cross E. Rollins
Mitsubishi Denki & Kabushiki Kaisha
Moulis Thomas N.
LandOfFree
Malfunction sensing apparatus for a fuel vapor control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Malfunction sensing apparatus for a fuel vapor control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Malfunction sensing apparatus for a fuel vapor control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-389532