Fuel tank nozzle having a dual purpose valve
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKoji Uranishi, Takaaki Ito, Toshio Tanahashi
Life of this patent
Estimating the term…
Abstract
A fuel tank comprising a fuel inlet pipe and a cap detachably attached to the fuel inlet of the fuel inlet pipe. A valve port interconnecting the interior of the fuel tank to a canister is formed in the fuel inlet pipe. A control valve controlling the opening operation of the valve port is arranged in the fuel inlet pipe. The control valve is normally closed. When a fuel pump nozzle is inserted into the fuel inlet, the control valve automatically opens, and the fuel vapor in the fuel tank is fed into the canister via the valve port.
Claims21
A fuel tank for use in a motor vehicle, comprising:
- a fuel inlet pipe connected to the fuel tank and having a fuel inlet into which a fuel pump nozzle is inserted;
- a cap detachably attached to said fuel inlet;
- a canister having activated carbon contained therein;
- a hollow cylindrical nozzle guide in said fuel inlet pipe, said nozzle guide having a valve port thereon, said nozzle guide defining a nozzle insertion passage therein and defining a fuel vapor passage between the nozzle guide and the fuel inlet pipe, said vapor passage in communication with said canister, the interior of the fuel tank being connected to the canister via the valve port and the fuel vapor passage;
- and
- valve means for controlling the vapor connection between the interior of the fuel tank and the canister, said valve means biased to close both said valve port and said nozzle insertion passage, said valve means being openable by the insertion of the fuel pump nozzle into the nozzle insertion passage to open both said valve port and said nozzle insertion passage.
A fuel tank for use in a motor vehicle, comprising:
- a fuel inlet pipe connected to the fuel tank and having a fuel inlet into which a fuel pump nozzle is inserted;
- a cap detachably attached to said fuel inlet;
- a canister having activated carbon contained therein;
- a hollow cylindrical nozzle guide in said fuel inlet pipe, said nozzle guide having a valve port thereon, said nozzle guide defining a nozzle insertion passage therein and defining a fuel vapor passage between the nozzle guide and the fuel inlet pipe, said cylindrical nozzle guide including sealing means for sealingly contacting the outer wall of the fuel pump nozzle to prevent fuel vapor from escaping through the nozzle insertion passage, said vapor passage in communication with said canister, the interior of the fuel tank being connected to the canister via the valve port and the fuel vapor passage;
- and
- valve means for controlling the vapor connection between the interior of the fuel tank and the canister, said valve means biased to close both said valve port and said nozzle insertion passage, said valve means being openable by the insertion of the fuel pump nozzle into the nozzle insertion passage to open both said valve port and said nozzle insertion passage.
Dependencies are inferred from the claim text.