A numerical study has been performed of the air/fuel preparation process in a cold-starting port-injected spark-ignition engine. The latest models were implemented for spray impingement and multicomponent vaporization of the droplet and wall film accounting for finite diffusion in the liquid. The infinite diffusion model was found insufficient for predicting vaporization in this engine, and the single-component fuel representation yields results significantly different from those from the multicomponent one. The operating parameters studied included injection timing, swirl, speed, target path, enrichment, and fuel accumulation. In-cylinder measurements were compared and good agreement was achieved. Detailed quantitative analysis of the air/fuel preparation of the engine was reported.
Issue Section:
Internal Combustion Engines
1.
Gallopoulus, N., 1992, “Bridging the Present to the Future in Personal Transportation—The Role of Internal Combustion Engines,” SAE Paper 920721.
2.
Sampson, M. J., and Heywood, J. B., 1995, “Analysis of Fuel Behavior in the Spark-Ignition Engine Start-Up Process,” SAE Paper 950678.
3.
Kelly-Zion, P. L., Styron, J. P., Lee, C. F., Lucht, R. P., Peters, J. E., and White, R. A., 1998, “Multicomponent Liquid and Vapor Fuel Measurements in the Cylinder of a Port Injected, Spark Ignition Engine,” 27th Symposium (International) on Combustion, Combustion Institute, Pittsburgh, PA, pp. 2111–2117.
4.
Horie, K., Takahasi, H., and Akazaki, S., 1995, “Emissions Reduction During Warm-Up Period by Incorporating a Wall-Wetting Fuel Model on the Fuel Injection Strategy During Engine Starting,” SAE Paper 952478.
5.
Naitoh, K., Takagi, Y., Kokita, H., and Kuwahara, K., 1994, “Numerical Prediction of Fuel Secondary Atomization Behavior in SI Einge Based on Oval-Parabola Trajectories (OPT) Model,” SAE Paper 940526.
6.
Shimizu, R., Matumoto, S., Furuno, S., Murayama, M., and Kojima, S., 1992, “Measurement of Air-Fuel Mixture Distribution in a Gasoline Engine Using LIEF Techniques,” SAE Paper 922356.
7.
Meyer, J., Haug, M., Schreiber, M., and Unverzagt, S., 1995, “Controlling Combustion in an Spark Ignition Engine by Quantitative Fuel Distribution,” SAE Paper 950107.
8.
Zhao, F.-Q., Taketomi, M., Nishida, K., and Hiroyasu, H., 1993, “Quantitative Imaging of the Fuel Concentration in a SI Engine With Laser Rayleigh Scattering,” SAE Paper 932641.
9.
Chen, K. C., Dewitte, K., and Cheng, W. K., 1995, “Fuel Effects and Enrichment Effects on Engine Starting and Warm-Up Behavior,” SAE Paper 950065.
10.
Zeng
, Y.
, and Lee
, C. F.
, 2002
, “A Model for Multicomponent Spray Vaporization in a High Pressure and High Temperature Environment
,” ASME J. Eng. Gas Turbines Power
, 124
, pp. 717
–724
.11.
Zeng
, Y.
, and Lee
, C. F.
, 2000
, “A Multicomponent-Fuel Film-Vaporization Model for Multidimensional Computations
,” J. Propul. Power
, 16
, pp. 964
–973
.12.
Zeng
, Y.
, and Lee
, C. F.
, 2002
, “A Preferential Vaporization Model for Multicomponent Droplets and Sprays
,” Atomization Sprays
, 12
(1
), pp. 163
–186
.13.
Abraham, J., and Magi, V., 1998, “A Model for Multicomponent Droplet Vaporization in Sprays,” SAE Paper 980511.
14.
Ayoub
, N. S.
, and Reitz
, R. D.
, 1997
, “Multidimensional Modeling of Fuel Effects and Split Injections on Diesel Engine Cold-Starting
,” J. Propul. Power
, 13
, pp. 123
–130
.15.
Bai, C., and Gosman, A. D., 1996, “Mathematical Modeling of Wall Films Formed by Impinging Sprays,” SAE Paper 960626.
16.
O’Rourke, P. J., and Amsden, A. A., 1996, “A Particle Numerical Model for Wall Film Dynamics in Port-Injected Engines,” SAE Paper 961961.
17.
Megaridis, C. M., and Sirignano, W. A., 1990, “Numerical Modeling of a Vaporizing Multicomponent Droplet,” 23rd Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, pp. 1413–1421.
18.
Abramzon
, B.
, and Sirignano
, W. A.
, 1989
, “Droplet Vaporization Model for Spray Combustion Calculations
,” Int. J. Heat Mass Transfer
, 32
, pp. 1605
–1618
.19.
Jin, J. D., and Borman, G. L., 1985, “A Model for Multicomponent Droplet Vaporization at High Ambient Pressures,” SAE Paper 850264.
20.
Law
, C. K.
, 1976
, “Multicomponent Droplet Combustion With Rapid Internal Mixing
,” Combust. Flame
, 26
, pp. 219
–233
.21.
Trujillo
, M. F.
, Mathews
, W. S.
, Lee
, C. F.
, and Peters
, J. E.
, 2000
, “Modeling and Experiment of Impingement and Atomization of a Liquid Spray on a Wall
,” Int. J. Eng. Res.
, 1
(1
), pp. 87
–105
.22.
Amsden, A., 1999, “KIVA-3V, Release 2, Improvements to KIVA-3V,” Los Alamos National Laboratory Report LA-13608-MS.
23.
Amsden, A., 1997, “KIVA-3V: A Block-Structured KIVA Program for Engines With Vertical or Canted Valves,” Los Alamos National Laboratory Report LA-13313-MS.
24.
Reid, R. C., Prausnitz, J. M., and Poling, B. E., 1987, The Properties of Gases and Liquids, 4th Ed., McGraw-Hill, New York.
25.
Styron, J. P., Kelly-Zion, P. L., Lee, C. F., Peters, J. E., White, R. A., and Lucht, R. P., 2000, “Multicomponent Liquid and Vapor Fuel Distribution Measurements in the Cylinder of a Port Injected, Spark Ignition Engine,” SAE Paper 2000-01-0243.
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