VAPORIZED FUEL PROCESSING DEVICE
First Claim
1. A vaporized fuel processing device comprising:
- a fuel tank storing fuel used for an internal combustion engine;
a pressurizing portion performing a pressurizing process to increase an inner pressure of the fuel tank by supplying gas from outside to inside the fuel tank; and
a controller controlling an operation of the pressurizing portion, wherein the controller controls the pressurizing portion to perform the pressurizing process and to keep the inner pressure of the fuel tank at or above a predetermined pressure value at which vaporized fuel is prevented from flowing out of the fuel tank, except for a time of fueling of the fuel tank.
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Accused Products
Abstract
A vaporized fuel processing device includes a fuel tank storing fuel used for an internal combustion engine, a pressurizing portion performing a pressurizing process to increase an inner pressure of the fuel tank by supplying gas from outside to inside the fuel tank, and a controller controlling an operation of the pressurizing portion. The controller controls the pressurizing portion to perform the pressurizing process and to keep the inner pressure of the fuel tank at or above a predetermined pressure value at which vaporized fuel is prevented from flowing out of the fuel tank, except for a time of fueling of the fuel tank.
12 Citations
4 Claims
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1. A vaporized fuel processing device comprising:
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a fuel tank storing fuel used for an internal combustion engine; a pressurizing portion performing a pressurizing process to increase an inner pressure of the fuel tank by supplying gas from outside to inside the fuel tank; and a controller controlling an operation of the pressurizing portion, wherein the controller controls the pressurizing portion to perform the pressurizing process and to keep the inner pressure of the fuel tank at or above a predetermined pressure value at which vaporized fuel is prevented from flowing out of the fuel tank, except for a time of fueling of the fuel tank. - View Dependent Claims (2, 3)
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4. A vaporized fuel processing device comprising:
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a fuel tank storing fuel used for an internal combustion engine; a canister configured to adsorb vaporized fuel generated in the fuel tank and be capable of desorbing the adsorbed vaporized fuel; a purge pump pumping the vaporized fuel adsorbed to the canister to an intake passage of the internal combustion engine through a purge passage; a purge valve including a valve element switchable between an allowed state where the vaporized fuel is allowed to flow into the intake passage and a prohibited state where the vaporized fuel is prohibited to flow into the intake passage, the purge valve controlling a flow of the vaporized fuel pumped from the purge pump; and a controller controlling at least an operation of the purge pump, wherein the controller controls the purge pump to perform a pressurizing process for increasing an inner pressure of the fuel tank by supplying gas from outside to inside the fuel tank, and to keep the inner pressure of the fuel tank at or above a predetermined pressure value at which the vaporized fuel is prevented from flowing out of the fuel tank, except for a time of fueling of the fuel tank.
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Specification