Patent ID: 8920982

Claim:
A vehicle equipped with a fuel cell system comprising fuel cells and a gas detection system configured to detect hydrogen leaked from the fuel cells, the gas detection system comprising: a gas concentration detector constructed to detect a concentration of hydrogen leaked from the fuel cells; a recording assembly; a notification module; and a control device programmed to make a distinction between, on one hand, giving notice to an operator of the vehicle and stopping the operation of the fuel cell system, and, on the other hand, recording a result of the concentration of hydrogen leaked into the recording assembly that can be retrieved at a later time by a diagnostic checking tool, wherein the control device is programmed to render the distinction based on the concentration of hydrogen leaked from the fuel cells in the following manner: (a) when the hydrogen concentration detected by the gas concentration detector is higher than a preset first reference value, control the notification module to give notice to the operator of the vehicle and stop the operation of the fuel cell system, and (b) when the detected hydrogen concentration is (i) higher than a preset second reference value that is lower than the preset first reference value and (ii) is lower than the preset first reference value, not give notice to the operator of the vehicle via the notification module, but record the detection result into the recording assembly that can be retrieved at a later time by a diagnostic checking tool.