Gas supply device

A gas supply device for use in a fuel cell system, comprising:

• a plurality of first-type injectors configured to have a first maximum valve-openable pressure;
• a second-type injector arranged in parallel with the first-type injectors and configured to have a lower flow rate than the first-type injectors and a greater second maximum valve-openable pressure than the first maximum valve-openable pressure;
• wherein one of the first-type injectors is located nearest to the second-type injector than the other of the first-type injectors;
• a first pressure sensor located upstream of the first-type and second-type injectors;
• and
• a controller configured to control open/close operation of the first-type and second-type injectors, wherein
• at a start of the fuel cell system,
• (i) when pressure in the upstream of the first-type and second-type injectors is greater than the first maximum valve-openable pressure but is less than or equal to the second maximum valve-openable pressure, the controller opens the second-type injector, and when the pressure in the upstream of the first-type and second-type injectors is dropped to or below the first maximum valve-openable pressure after opening of the second-type injector, the controller first opens the first-type injector that is nearest to the second-type injector, and
• (ii) when the pressure in the upstream of the first-type and second-type injectors is less than or equal to the first maximum valve-openable pressure, the controller opens the first-type injectors.