| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a brake system using a brake booster same as a brake system of a gasoline-powered vehicle by supplying negative pressure to the brake booster of the brake system by small, inexpensive, and easy-to-control constitution without installing a dedicated pump, or utilizing negative pressure on the suction side of a compressor on the cathode side of a fuel cell. <P>SOLUTION: A supply valve 4 of hydrogen on the upstream side of an anode of a fuel cell 3 and an exhaust valve 6 on a downstream side of an anode are closed to stop supply of hydrogen which is fuel, and in this state, electric power is generated with the fuel cell 3, and by this power generation, the anode side in the fuel cell 3 and a piping passage 5 from a supply valve 4 to an exhaust valve 6 are made in a pressure reduced state to generate negative pressure, and the negative pressure is supplied to the brake booster 7. <P>COPYRIGHT: (C)2007,JPO&INPIT |
