| 摘要 |
A regulator is provided with a first pressure reducing valve, a second pressure reducing valve, and a load adjusting part. A gas fuel pressure in a fuel tank is reduced to 1.4 MPa from 20 MPa by the first pressure reducing valve, and then reduced to 0.2 to 0.65 MPa by the second pressure reducing valve. In the second pressure reducing valve, the pressure of the gas fuel is reduced to 0.2 to 0.65 MPa from 1.4 MPa, so that the resistive force of a second O-ring for sealing a first middle-pressure chamber and a second pressure chamber can be made smaller. A sliding resistance between a needle and the second O-ring is reduced. An electromagnetic attracting force generated by the load adjusting part can be made smaller. Electricity consumed by the load adjusting part can be reduced and the regulator can be made smaller.
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