| 摘要 |
The vehicle is provided with a canister (32), a fuel vapor treatment device (30), a brake booster (20), which has a constant pressure chamber (23, 24) to which a negative pressure is supplied and is actuated by using a negative pressure supplied to the constant pressure chamber (23, 24), and a negative pressure pump (50). The negative pressure pump (50) is provided with a suction port (53), which is connected to the canister (32) and to the constant pressure chamber (23, 24), and an ejection port (51), which is connected to the air intake passage (12). A second purge control valve (55A) for opening and closing a second purge passage (55) is installed in the second purge passage (55), which puts the canister (32) and the negative pressure pump (50) in communication. A negative pressure control valve (56A) is installed in a communication passage (56), which puts the constant pressure chamber (23, 24) and the negative pressure pump (50) in communication. |
