| 摘要 |
PROBLEM TO BE SOLVED: To hold open an auxiliary valve longer to allow an intake amount control under lower load than ever before, in an internal combustion engine with auxiliary chamber, in which an auxiliary chamber is connected to an auxiliary port, and an ignition plug of which the tip faces a combustion chamber is mounted to a cylinder head.SOLUTION: The ignition plug 60A of which the ignition timing is during the opening of the auxiliary valve 30 is mounted to the cylinder head 13 so that the tip thereof faces the combustion chamber 14 at a position symmetric with the auxiliary valve 30 with respect to a center C of the combustion chamber 14. |
