| 摘要 |
PROBLEM TO BE SOLVED: To reduce the parts count of a fuel cell system and improve layout flexibility thereof.SOLUTION: A fuel cell system 1 includes: a fuel cell stack 2 that is supplied with fuel and an oxidant and generates power; an air supply passage 11 through which air to be supplied to the fuel cell stack 2 flows; a cathode off-gas passage 12 through which air emitted from the fuel cell stack 2 flows; an EGR passage 19 that branches off from the cathode off-gas passage 12 and returns the air emitted from the fuel cell stack 2, to the air supply passage 11; a bypass passage 18 that branches off from the air supply passage 11 upstream of the fuel cell stack 2 and joins the air flowing through the air supply passage 11, to the cathode off-gas passage 12; and a twin valve 30 into which an EGR valve 32 that allows blockage of the EGR passage 19 and a bypass valve 31 that allows blockage of the bypass passage 18 are integrated. |
