| 摘要 |
PROBLEM TO BE SOLVED: To provide combustion chamber structure of an internal combustion engine for improving exhaust performance by enhancing combustion efficiency. SOLUTION: This combustion chamber structure of the internal combustion engine has a first intake valve 2a and a second intake valve 2b to one combustion chamber 1. A recessed part 4 is arranged on an upper wall surface of a combustion chamber 1 between the first intake valve 2a and the second intake valve 2b. This recessed part 4 is constituted by connecting mutual valve seats of the first intake valve 2a and the second intake valve 2b. COPYRIGHT: (C)2007,JPO&INPIT
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