| 摘要 |
PURPOSE:To relieve a torque shock by setting the control zones of two valves being partly overlapped, in a device having an intake passage for high load in which a shutter valve is provided and an intake passage for low load in which a timing valve is provided. CONSTITUTION:An intake passage 10 is branched off, on the lower course side of a surge tank 13, to an intake passage 10a for high load and an intake passage 10b for low load which is formed for producing a swirl, and a shutter valve 17 is provided in the passage 10a while a timing valve 18 is provided in the passage 10b. In this case, a timing varying zone for varying the timing of the timing valve 18, is set being overlapped with a part of an opening operation zone for varying the opening of the shutter valve 17. Thereby, change in a charging quantity based on the change in timing of the timing valve 18 against variation in load, can be smoothly connected to change in a charging quantity based on the change in opening of the shutter valve 17, preventing a torque shock from taking place.
|
