Advanced SearchSearch Tips
A Study on the Characteristics of Intake Port Flow and Performance with Swirl Ratio Variance in a Turbocharged D.I. Diesel Engine
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on the Characteristics of Intake Port Flow and Performance with Swirl Ratio Variance in a Turbocharged D.I. Diesel Engine
Yoon, Jun-Kyu; Cha, Kyung-Ok;
  PDF(new window)
The characteristics of intake port flow and engine performance with swirl ratio variance in a turbocharged D.I. diesel engine were studied in this paper. The intake port flow is important factor which have influence on the engine performance and exhaust emission because the properties in the injected fuel depend on the combustion characteristics. Through these experiments it can be expected to satisfy performance and emission by optimizing the main parameters; the swirl ratio of intake port, injection timing and compression ratio. The swirl ratio for ports was modified by hand-working and measured by impulse swirl meter. For the effects on performance and emission, the brake torque and brake specific fuel consumption were measured by engine dynamometer, NOx and smoke were measured by gas analyzer and smoke meter. The results of steady flow test are as follows; as the valve eccentricity ratio are closed to cylinder wall, the flow coefficient and swirl intensity are increased. Also we realized that there is a trade-off that the increase of swirl ratio decreases mean flow coefficient and increases the Gulf factor. And the optimum parameters to meet performance and emission through engine test are as follows; the swirl ratio 2.43, injection timing BTDC 13oCA and compression ratio 15.5.
Swirl Ratio;Valve Eccentricity Ratio;Flow Coefficient;Non-dimensional Rig Swirl;Gulf Factor;Engine Performance;
 Cited by
Bicen, A.F., Vafidis, C. and Whitelaw, J.H., 1985, 'Steady and Unsteady Airflow Through the Intake Valve of a Reciprocating Engine,' ASME Jounral of Fluids Eng., Vol. 107

Arcoumanis, C., Vafidis, C. and Whitelaw, J.H., 1987,' Valve and In-Cylinder Flow Generated by Helical Port in a Production Diesel Engine,' ASME Journal of Fluids Eng., Vol. 109

Monaghan, M.L. and Pettifer, H.F., 1981, 'Air Motion and its Effect on Diesel Performance and Emissions,' SAE 810255

Kajiyama, K., Hiroyasu, H., 1984, 'An Analysis of swirling Flow in Cylinder for Predicting D.I. Diesel Engine Performance,' SAE 840518

Gale, N.F., 1979. 'The Impulse Swirl Met- er,' Ricardo Report DP. 79/1232

Partington, G.D., 1980, 'Analysis of Steady Flow Tests on Inlet and Exhaust Ports,' Ricardo Report DP. 80/1123

Annand, W.J.D.,and Roe, G.E., 1974, 'Gas Flow in the Combustion Engine,' Haessner Pub. N.J.

Kahn, I.M., Greeves, G. and Wang, C.H.T., 1972, 'Factors Affecting Smoke and Gaseous Emissions from Direct Injection En- gines,' SAE 720102

Hiroyasu, H. et al., 1991, 'Combustion Process in a D.I. Diesel Engine with High Pressure Injection Effects of Partial Distribution of Fuel Spray in a Combustion Chamber on NOx Emission,' JSAE, Vol. 22, No. 4

Takatsu, T. et al., 1994,' Development of a New Low Pollution and High Output Combustion Chamber,' JSAE, Vol. 48

윤준규, 차경옥, 2000, '흡기포트 선회비 변경에 따른 유동특성 및 엔진성능에 관한 연구,' 대한기계학회 춘계학술대회논문집(B), KSME 00S303