| 摘要 |
PURPOSE:To permit the superior layered combustion by installing a swirl varying apparatus for controlling the magnitude of the swirl into a suction passage in which a fuel injection valve is arranged and delaying the fuel injection completion timing as the swirl varying apparatus is operated in the direction for weakening swirl. CONSTITUTION:In the throttle-valve downstream side part in a suction passage 5, a fuel injection valve 12 is arranged towards a suction valve 3. In the suction passage 5, the downstream side part which communicates to a combustion chamber 2 is divided into the primary and the secondary side suction passages 5a and 5b by a partitioning wall 18. The primary-side suction passage 5a is formed to have a relatively small passage area and opened as a port 11a for swirl at the suction port 11 on a little upstream side from the suction valve 3. While, the swirl control valve 19 of a swirl varying apparatus 15 is installed into the secondary-side suction passage 5b, and as the valve 19 is operated in the direction for weakening swirl, the injection completion timing of a fuel injection valve 12 is delayed. |
