Fuel filling device and fuel leakage detection method
AssigneeNIPPON SANSO CORPORATION and NITTO KOHKI CO., LTD.
InventorsKazutoshi Satou, Naoyuki Takano, Yoshikazu Shirane, Kunihiko Gotou, Koji Matsumoto
Life of this patent
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Abstract
A fuel filling device is provided with a fuel supply adjusting section which adjusts the amount of fuel supplied, a fuel feed line which feeds fuel from a fuel supply adjusting section to a vehicle W, a nozzle removably coupled to vehicle W that supplies fuel from fuel feed line to vehicle W, and a discharge device that discharges fuel present within fuel feed line to the outside to prevent deterioration of packings used in the device in the case of filling a fuel at high pressure, while also facilitate the operation of a filling nozzle.
Claims7
A fuel filling device which fills hydrogen gas or compressed natural gas a fuel tank of a vehicle as fuel, comprising:
- a fuel supply adjusting section which adjusts an amount of fuel supplied;
- a fuel feed line which feeds fuel from the fuel supply adjusting section to the vehicle;
- a nozzle removably coupled to the vehicle which supplies fuel from the fuel feed line to the vehicle;
- and
- a discharge device which discharges fuel within the fuel feed line to outside.
A method of detecting fuel leakage of a fuel filling device which fills hydrogen gas or compressed natural gas into a fuel tank of a vehicle as fuel comprising:
- a fuel filling device being provided with a fuel supply adjusting section that adjusts the amount of fuel supplied, and
- a fuel supply adjusting section being provided with a flow meter which measures a flow rate of the fuel, and a flow rate adjusting valve which adjusts a flow rate of the fuel;
- wherein fuel leakage is detected by comparing a theoretical filling volume calculated based on an opening of the flow rate adjusting valve and a pressure difference between an upstream pressure and a downstream pressure of the flow rate adjusting valve, and an actual filling volume detected with the flow meter.
Dependencies are inferred from the claim text.