International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

SIMULATION OF STARTING PROCESS OF DIESEL ENGINE UNDER COLD CONDITIONS

  • Park, J.K. (Department of Mechanical Engineering, Konkuk University)
  • Published : 2007.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

A nonlinear dynamic simulation model from cranking to idle speed is developed to optimize the cold start process of a diesel engine. Physically-based first order nonlinear differential equations and some algebraic equations describing engine dynamics and starter motor dynamics are used to model the performance of cold starting process which is very complex and involves many components including the cold start aiding method. These equations are solved using numerical schemes to describe the starting process of a diesel engine and to study the effects of cold starting parameters. The validity of this model is examined by a cold start test at $-20^{\circ}C$. Using the developed model the effects of the important starting variables on the cold starting processes were investigated. This model can be served as a tool for designing computer aided control systems that improve cold start performance.

Keywords

References

  1. Caton, J. A. and Heywood, J. B. (1981). An experimental and analytical study of heat transfer in an engine exhaust port. Int. J. Heat Mass Transfer 24, 4, 581-595 https://doi.org/10.1016/0017-9310(81)90003-X
  2. Gardner, T. P. and Henein, N. A. (1988). Diesel starting: A mathematical model. SAE Paper No. 880426
  3. Heywood, J. B. (1988). Internal Combustion Engine Fundamentals. McGraw-Hill. New York. 750-784
  4. Hiroyasu, H., Kadota, T. and Arai, M. (1980). Supplementary comments: Fuel spray characterization in diesel engines. Combustion Modeling in Reciprocating Engines, Plenum Press, 369-408
  5. Liu, H., Henein, N. A. and Nryzik, W. (2003). Simulation of diesel engines cold-start. SAE Trans. 112, 3, 352-372
  6. Liu, H. Q., Chalhoub, N. G. and Henein, N. (2001). Simulation of a single cylinder diesel engine under cold start conditions using simulink. J. Engineering for Gas Turbine and Power, 123, 117-123 https://doi.org/10.1115/1.1290148
  7. Medica, V. and Giadrossi, A. (1994). Numerical simulation of turbocharged diesel engine operation in transient load conditions. ASME Trans. Eng. Syst. Des. Anal. PD-Vol. 64-8. 3, ASME, New York, 589-596
  8. Namazian, M. and Heywood, J. B. (1982). Flow in the piston-cylinder-ring crevices of a spark ignition engine: Effect on hydrocarbon emissions, efficiency and power. SAE Paper No. 820088
  9. Olikara, C. and Borman, G. L. (1975). A computer program for calculating properties of equilibrium combustion products with some applications to I.C. engines. SAE Paper No. 75046
  10. Poublon, M. and Patterson, D. J. (1985). Instantaneous crank speed variations as related to engine starting. SAE Paper No. 850482
  11. Rezeka, S. F. and Henein, N. A. (1984). A new approach to evaluate instantaneous friction and its components in internal combustion engines. SAE Paper No. 840179
  12. Rogenberg, R. C. (1982). General friction considerations for engine design. SAE Paper No. 821576
  13. Shin, K. B., Brennan, M. J., Joe, Y-G. and Oh, J-E. (2004). Simple models to investigate effect of velocity dependent friction on the disc brake squeal noise. Int. J. Automotive Technology 5, 1, 1-67
  14. Tang, D.-L., Sutan, M. C. and Chang, M.-F. (1989). A dynamic engine starting model for computer-aided control systems design. ASME Book No. H00546, 203-222
  15. Uras, H. M. and Patterson, D. J. (1985). Oil and ring effects on piston-ring assembly friction by the instantaneous IMEP method. SAE Paper No. 850440
  16. Watson, N., Pilley, A. D. and Marzouk, M. (1980). A combustion correlation for diesel engines simulation. SAE Paper No. 800029
  17. Woschni, G. (1967). Universally applicable equation for the instantaneous heat transfer coefficient in the internal combustion engine. SAE Paper No. 670931