Domestic Journal


Title배충식, 정경석, "실린더헤드 형상에 따른 정상유동 특성," 한국자동차공학회 논문집, vol. 4, No. 5, pp197-205, SAE Paper No. 96370110, 1996. 9.

배충식, 정경석, “실린더헤드 형상에 따른 정상유동 특성,” 한국자동차공학회 논문집, vol. 4, No. 5, pp197-205, SAE Paper No. 96370110, 1996. 9.

Abstract

The flow characteristics of five different 4-valve cylinder heads were investigated in a steady flow rig using laser-Doppler velocimetry. The tumble flow of each head with pentroof combustion chamber was quantified by nondimensional tumble number using a tumble adaptor. The formation of tumbling vortex was examined in an optical single-cylinder engine which has windows for in-cylinder LDV measurements. Tumble vortex ratio was estimated from the tumble flow measurement.
The four-valve cylinder heads with pent-roof combustion chamber showed the tumble vortex from the intake process. which was investigated in the steady flow test. The tumble adaptor which converts the tumble into swirl flow was found to be feasible in predicting the tumble flow in the real engine. The tumble strength in the steady flow test coincides with that in the real engine experiment within 15%. It was found that the steady flow test on the four-valve cylinder heads provides the tip for a better design of cylinder head.

Previous배충식, “가솔린엔진에서의 2차원 화염가시화,” 한국연소학회 논문집, vol. 1., No. 1., pp65-73, 1996. 7
Next배충식, “프로판-공기 예혼합기의 화염전파 과정에 관한 연구,” 한국연소학회 논문집, vol. 1., No. 2., pp21-29, 1996. 12
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