| 摘要 |
PROBLEM TO BE SOLVED: To realize the technique capable of providing a high compression ratio and high efficiency by injecting the fuel to a main combustion chamber 1 with high pressure without using a complex and expensive fuel injection device, in an engine 100 provided with the main combustion chamber 1 and the auxiliary combustion chamber 10 communicated through a communication passage 23, and a fuel supply means 30 and an ignition means 32 mounted in the auxiliary combustion chamber 10. SOLUTION: A main combustion chamber hole 21 on the main combustion chamber 1 side of the communicating passage 23 is made on position projected from a cylinder head 9 to the main combustion chamber 1, the shaft center direction of the main combustion chamber hole 21 is intersected to the shaft center direction of a cylinder 3, and an air supply means 31 is mounted for supplying the air A to the auxiliary combustion chamber 10 to which the fuel is supplied by the fuel supply means 30, to form a combustible zone X on the ignition means 32 side of the auxiliary chamber 10, and an over-concentration zone Y on the communicating passage 23 side of the auxiliary chamber 10.
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