| 摘要 |
PURPOSE:To improve effective utilization of air intake inertia effect and operability by providing air intake passages independent each other to one air cylinder on surge tanks separately formed and communicating respective surge tanks according to the operating condition. CONSTITUTION:Plural air intake passages 6, 7 connected to plural air intake ports of respective cylinders 1 are made independent with each other and opened to separate surge tanks 8, 9. And the surge tanks 8, 9 are connected in a serial passage 18, and the serial passage 18 is opened and closed by a switch valve 19. An actuator 21 working the switch valve 19 and an actuator 20 working fuel injection valves 14, 15 are a shutter valve 17 are controlled by a control unit 25 upon the signals from sensors 22-24 detecting operating condition of an engine. Then, respective surge tanks 8, 9 are used independently and air intake inertia effect in the engine high output range is effectively used to improve output. |
