Fluid handling – Systems – System with plural openings – one a gas vent or access opening
Patent
1996-02-29
1998-10-06
Rivell, John
Fluid handling
Systems
System with plural openings, one a gas vent or access opening
123519, F02M 3302
Patent
active
058162879
ABSTRACT:
An apparatus for preventing discharge of fuel vapor has a differential pressure valve. Before a fuel tank opens to the atmosphere due to removal of a fuel cap, the apparatus leads fuel vapor in the lower pressure chamber of the differential pressure valve to a canister for processing therein and opens the differential pressure valve to lead fuel vapor in the fuel tank to the canister for processing therein. The fuel tank is connected to the canister via the differential pressure valve. The lower pressure chamber of the differential pressure valve is connected to the canister via a connection pipe, a communication valve, and a connection pipe. When a fuel lid is opened, the communication valve is opened to lead fuel vapor in the lower pressure chamber of the differential pressure valve to the canister. At this time, a pressure difference is produced between the lower pressure chamber and the high pressure chamber of the differential pressure valve, so that the differential pressure valve is opened to lead fuel vapor in the fuel tank to the canister for processing therein.
REFERENCES:
patent: 3749124 (1973-07-01), Andres
patent: 4659346 (1987-04-01), Uranishi et al.
patent: 4714172 (1987-12-01), Morris
patent: 4815436 (1989-03-01), Sasaki et al.
patent: 4869283 (1989-09-01), Oeffling et al.
patent: 4872439 (1989-10-01), Sonoda et al.
patent: 5054520 (1991-10-01), Sherwood et al.
patent: 5067468 (1991-11-01), Otowa et al.
patent: 5123459 (1992-06-01), Toshihiro
patent: 5243944 (1993-09-01), Blumenstock
patent: 5263511 (1993-11-01), Ohasi et al.
patent: 5277168 (1994-01-01), Kondo et al.
Hyodo Yoshihiko
Matsuoka Hiroki
Rivell John
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Apparatus for preventing discharge of fuel vapor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for preventing discharge of fuel vapor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for preventing discharge of fuel vapor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-68896