Patent ID: 6945212
Filing Date: 2005-09-20
Classification: F01L,F02B,F02D,Y02T

Abstract:
1. A combustion chamber structure for an internal combustion engine comprising: a combustion chamber surface; a first intake opening formation surface surrounding a first intake opening, the first intake opening formation surface being recessed from the combustion chamber surface to form a first step; a second intake opening formation surface surrounding a second intake opening, the second intake opening formation surface being recessed from the combustion chamber surface to form a second step; a first connecting surface interconnecting the first and second intake opening formation surfaces, the first connecting surface being recessed from the combustion chamber surface to form a first connecting step and a communication space being formed between the first and second intake openings; and a peripheral wall surface extending from the first and second intake opening formation surfaces and the first connecting surface to the combustion chamber surface in a direction toward an inside portion of a combustion chamber to define the first and second steps and the first connecting step.