Patent ID: 11920733
Assignee: ENEOS CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B  G  Y | IPC B  F  G

Claim 0:
1. A method for diagnosing a failure of a flowmeter in a measuring machine, comprising:
measuring a filling amount of hydrogen gas by using a flowmeter in a case that a tank of a vehicle powered by the hydrogen gas is filled with the hydrogen gas;
receiving information of a pressure, a temperature, and a volume of the tank;
calculating a filling amount at an end of filling of the hydrogen gas into the tank from the measuring machine by using the pressure, the temperature, and the volume of the tank; and
determining whether or not the flowmeter fails by using a plurality of error values between a metering filling amount at the end of filling measured using the flowmeter and a calculated filling amount at the end of filling calculated using the pressure, the temperature, and the volume of the tank, the plurality of error values being based on a plurality of past performance data stored in a storage device, and an error value at the end of filling of the hydrogen gas at a present time, and outputting a result.