| 摘要 |
PURPOSE:To improve a degree of charging efficiency through a suction inertial effect in a compact structure, by installing a surge tank in an empty space lying between cylinder trains at both sides as well as installing the surge tanks both its sides, and connecting a suction port to these tanks. CONSTITUTION:Plural cylinders 2 are symmetrically set up with each other in relation to a center line 4 as being tilted at a specified angle. And, at a cylinder head, there are provided with a suction port 4 feeding suction air over in times of low load and high load and a suction poot 5 feeding the suction air in time of the high load alone, both being opened to a combustion chamber 6, respectively. In addition, a surge tank 7 is set up in an empty space between a train of these cylinders 2, while each of surge tanks 8 is set up at both its sides, to which each of suction passages 70 and 81 is connected. And, the suction passage 70 is recommended to be made up shorter than the suction passage 81 in design, and its length in the latter is set down to such length capable of making a suction inertial effect producible. |
