| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for fault determination of a gas sensor for use to oxygen gas leakage detection in a fuel cell vehicle.SOLUTION: A vehicle 10 mounts a fuel cell 100 in a vehicle cabin underfloor area 40 under a vehicle floor, and mounts a first gas tank 111 and a second gas tank 112 closer to rear wheels than the fuel cell 100 is. The vehicle 10 compares a hydrogen gas concentration s1 of a vehicle front area 30 detected by the first gas sensor 140 with a hydrogen gas concentration s2 of the vehicle cabin underfloor area 40 detected by the second gas sensor 150 to grasp a sensor output relation between the first gas sensor 140 and the second gas sensor 150. It is determined that a fault occurs to any of the gas sensors 140 and 150 if the sensor output relation based on the detected gas concentration comparison is against a forward-time sensor output relation when the vehicle 10 travels forward (s2>s1). |
