| 摘要 |
An internal combustion engine having a main combustion chamber in a top portion of a piston, and an ignition chamber which is provided with a fuel injection valve and an ignition plug, in a cylinder head, the direction in which fuel is ejected from the fuel injection valve being set in accordance with the forward direction of a swirl, the axis of the ejected fuel being spaced from a central portion of the main combustion chamber by a distance of not more than 1/2 of the radius thereof, a recess in communication with the main combustion chamber being provided in the section of the top portion of the piston which is on an extension of the ignition chamber.
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