火花点火機関燃焼室内混合気濃度分布に及ぼす吸気弁形状の影響

概要

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An experimental study was made to perform space resolved measurements of mixture strength in the combustion chamber of a multipoint fuel injection spark ignition engine via laser Rayleigh scattering. The mixture formation during the intake stroke was simulated by the continuous injection of freon 12 into the steady flow of dust free dry air through an intake port. The vapor concentration in the transparent combustion cylinder was determined from the intensity of scattered light which had been calibrated beforehand. The role of the intake valve configuration which rules the turbulent flow field and the mixing process of air and Freon 12 on the mixture strength field in the combustion chamber was extensively studied. The newly developed glass windows installed on the wall of a combustion cylinder were successful both in suppressing the spuriously scattered incident laser beam and in keeping air tightness. The mixture strength field was largely affected by the intake valve configuration.
一般社団法人日本機械学会の論文
1988-06-25