Apparatus and method for detecting leakage in hydrogen tank of hydrogen fuel cell vehicle
AssigneeHyundai Motor Company
InventorsSung Mun Cho, Kang Sik Jeon, Sae Hoon Kim
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Abstract
An apparatus and a method for detecting leakage in a hydrogen tank of a hydrogen fuel cell vehicle are provided. Particularly, leakage is detected due to failure of an airtight seal of a solenoid valve in a hydrogen tank based on a change of the sensing value of a high pressure sensor which represents a hydrogen tank pressure during a process of performing a wakeup operation at the time of key-off of a vehicle.
Claims11
A method for detecting leakage in a hydrogen tank of a hydrogen fuel cell vehicle equipped with a fuel cell stack supplied with hydrogen gas stored in the hydrogen tank through a fuel supply line to generate electricity, the method comprising:
- receiving, by a controller, a hydrogen tank pressure before performing primary wakeup after a predetermined period of time passes after key-off of the vehicle;
- performing, by the controller, primary wakeup for injecting hydrogen gas which remains in the fuel supply line of the stack into the fuel cell stack using a pressure difference;
- and
- receiving, by the controller, a hydrogen tank pressure after performing the primary wakeup to compare the hydrogen tank pressure after performing the primary wakeup with the hydrogen tank pressure before performing the primary wakeup to determine leakage in the hydrogen tank based on a comparison result,
- wherein the comparison result is based on a comparison between the hydrogen tank pressure after performing the primary wakeup with the hydrogen tank pressure before performing the primary wakeup.
Dependencies are inferred from the claim text.