초록 ▼

A device for the recovery of fuel vapors originating 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 canister containing activated

A device for the recovery of fuel vapors originating 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 canister containing activated carbon or charcoal, with another 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 heating action hastens the release of the stored fuel from the charcoal. Otherwise at low temperatures this release would occur very slowly. The end result is less pollution emitted into the atmosphere from the vehicle\s fuel system.

대표청구항 ▼

In an internal combustion engine, in combination: (a) a fuel system comprising a fuel intake device for supplying a combustible vapor mixture to the engine, (b) a canister and means connecting the same to said fuel system of the engine to receive vapors therefrom, (c) an adsorptive material in the c

In an internal combustion engine, in combination: (a) a fuel system comprising a fuel intake device for supplying a combustible vapor mixture to the engine, (b) a canister and means connecting the same to said fuel system of the engine to receive vapors therefrom, (c) an adsorptive material in the canister for adsorbing vapors that are brought therein, (d) heating means carried by the canister, for heating said adsorptive material to enhance the release of said vapors, (e) means connecting said canister to the fuel intake device to deliver thereto vapors recovered from said adsorptive material, and (f) a grid in said canister, said grid comprising large surface areas and being constituted of good heat conductive material disposed in heat transferring relation with said heating means and with said adsorptive material.