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A Numerical Study of Valve Lift on the Flow Characteristics in Gasoline Engine  

Kim, Dae-Yeol (동양공업전문대학 기계.자동화공학부 기계설계과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.17, no.4, 2008 , pp. 81-88 More about this Journal
Abstract
Flow characteristics have one of the effects in the process of engine. The numerical analysis makes it possible to predict the flow fields. This paper presents characteristics of steady flow according to variation of valve lift in a gasoline engine. The numerical computations have been made to observe the pressure distribution in accordance with the variable valve lift. Characteristics of tumble flow and swirl flow according to the variable valve has also been investigated. We could find that tumble ratio and swirl ratio is different between with/without PDA valve. The steady flow test was simulated through three-dimensional analysis on intake port design for comparing with experimental data and confirming the feasibility of applying analytic method. As a result, this study shows the possibility of the usage of numerical simulation to predict the flow characteristics for gasoline engine.
Keywords
Numerical simulation; PDA Valve(port deactivation valve); Steady flow; Swirl ratio; Tumble ratio;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Cho, K. K. and Hwang, S. S., 1988, "Numerical Simulation on Combustion Phenomena of Internal Combustion Engine," Transactions of the Korean Society of Automotive Engineers, Vol. 10, No. 2, pp. 9-14
2 Tahry, S. E., Haworth, D. C., and Huebler, M. S., 1990, "Multi dimensional Port and Cylinder Flow Calculation for Two and Four Valve Per Cylinder Engines : Influence of Intake configuration on Flow Structure," SAE Paperr, No. 900257
3 Kim, C. S. and Choi, Y. D., 1994, "A Study on the Influence of Turbulent Intensity on DOHC Engine Performacne," Transactions of the Korean Society of Automotive Engineers, Vol. 2, No. 2, pp. 12-23
4 Kang, D. G., 1993, "Numerical Simulation of the Three-Dimensional Flow n a Reciprocating Engine During the Intake Stroke," An Academic degree thesis of Pohang University, pp. 6-52
5 Kim, D. Y. and Han, Y. C., 2004, "An Experimental Study of the Effect of PDA Valve on the Combustion Characteristics of the Spark Ignition Engine," Transaction of KSMTE, Vol. 13, No. 3, pp. 104-112
6 Kent, J. C., 1989, "Observation on the Effect of Intake Generated Swirl and Tumble on Combustion Duration," SAE Paper, No. 892096
7 Gosman, A. D. and Ahmed, A. M. Y., 1987, "Measurement and Multi-dimensional Prediction of Flow in an Axi-Symmetric Port/Valve Assembly," SAE Paper, No. 870592
8 Kim, D. Y., Han, Y. C., and Park, B. K., 2006, "A Study on the Steady Flow Characteristics by PDA and Tumble Control Valve in Combustion Chamber," Transactions of KSMTE, Vol. 15, No. 4, pp. 74-82   과학기술학회마을
9 Partington, G. D., 1985, Ricardo Impulse Swirl Meter Instruction Manual, Ricardo, DP. pp. 85-1833
10 Mayer, K. P., 1982, "Swirl Measurement on the Stationary Flow Test Bench by Means of a Momentum Meter," AVL, Memo 618