| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion chamber structure capable of efficiently using squish flow especially reverse squish flow generated after piston top dead center while inhibiting drop of thermal efficiency by increase of S/V ratio. SOLUTION: In the combustion camber structure for an engine 1 forming a combustion chamber 4 between a lower surface of a cylinder head 2 and a upper surface of a piston 3 and a squish area 5 adjoining the combustion chamber 4, a projection part 12 is provided on a cylinder head 2 lower surface (or a piston 3 upper surface) in the squish area 4 and a depressed part 13 opposing to the projection part 12 is provided on the piston 3 upper surface (or the cylinder head 2 lower surface) in the squish area 5. COPYRIGHT: (C)2007,JPO&INPIT
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