| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of parts, simplify constitution, and ensure a purge amount of evaporated fuel gas according to a necessary purge amount. SOLUTION: A bypass passage 27 is arranged at an intake passage 6 in the vicinity of a throttle valve 21, and a rotary type idle speed control valve(ISCV) 28 is arranged in the bypass passage 27. A vapor pipe 30 extending from the fuel tank 18 is connected to a canister 29 to capture evaporated fuel gas (vapor gas) generated in a fuel tank 18 and temporarily store the gas. Further, the base end of a purge pipe 31 is connected to the canister 29. A purge port 31a at the tip of the purge pipe 31 is communicated to the containing space, in which the ISCV 28 is arranged, of the bypass passage 27. The ISCV 28 is provided with a first valve body to regulate the area of an opening of a part to pass intake air and a second valve body to regulate the area of the opening of the purge port 31a. |
