F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/20, 183/29
F02M 33/02 (2006.01) F02M 25/08 (2006.01)
Patent
CA 1237991
FUEL VAPOR RECOVERY SYSTEM FOR AUTOMOTIVE VEHICLES Abstract A device for the recovery of fuel vapors originat- ing in the fuel system of a vehicle, particularly at the gas tank thereof or in the carburetor float bowl. In one arrangement, a fuel vapor line connects the fuel tank to an input port of a fuel vapor storage and recovery can- ister containing activated carbon or charcoal, with an- other port thereof, referred to as a "purge" port, being connected with either the engine intake manifold or else a vacuum port of the carburetor. Carried by the canister is a self-regulating electric heater assemblage adapted to heat air flowing into the canister through a large air port, thereby to also heat the charcoal. When the vehicle is idle, fumes from the gasoline tank can enter the input port of the canister to be adsorbed and stored by the charcoal. When the vehicle is operated, vacuum from the intake manifold draws air into the canister, causing the heated charcoal to release its stored fuel which is then burned in the engine. The advantage of the present invention over the devices of the prior art is that the immediate heating action which occurs hastens the release of the stored fuel from the charcoal very promptly, and the arrangement is self-regulating. The end result is less pollution emitted into the atmosphere from the vehicle's fuel system.
501245
Lupoli Peter J.
Mattis Donald J.
Miller Robert S.
Casco Products Corporation
Smart & Biggar
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