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Evaluation of On-board Heat Loss Prediction Model and Polytropic Index Prediction Model for CI Engines Using Measurements of Combustion Chamber Wall Heat Flux
Published January 24, 2020 by Society of Automotive Engineers of Japan in Japan
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Diesel engines need to optimize the fuel injection timing and quantity of each cycle in the transient operation to increase the thermal efficiency and reduce the exhaust gas emissions through the precise combustion control. The heat transfer from the working gas in the combustion chamber to the chamber wall is a crucial factor to predict the gas temperature in the combustion chamber to optimize the timing and quantity of fuel injection. Therefore, the authors developed both the heat loss and the polytropic index prediction models with the low calculation load and high accuracy. In addition, for the calculation of the heat loss and the polytropic index, the wall heat transfer model was also developed, which was derived from the continuity equation and the energy equation. The present study used a single cylinder diesel engine under the condition of engine speed of 1200 and 1500 rpm, and measured the local wall temperature and the local heat flux of the combustion chamber. The measured data were compared with the prediction results of the heat loss and the polytropic index and evaluated the prediction accuracy of those models. The average relative errors for the heat loss and the polytropic index prediction models were evaluated to be 6.6% and 0.3%, respectively.
CitationIchiyanagi, M., Liu, Z., Chen, H., Asano, K. et al., "Evaluation of On-board Heat Loss Prediction Model and Polytropic Index Prediction Model for CI Engines Using Measurements of Combustion Chamber Wall Heat Flux," SAE Technical Paper 2019-32-0543, 2020.
Data Sets - Support Documents
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- G.F. Hohenberg , "Advanced approaches for heat transfer calculations", SAE Tech. Papers, No. 790825, (1979).
- C.D. Rakopoulos, G.M. Kosmadakis, E.G. Pariotis , "Critical evaluation of current heat transfer models used in CFD in-cylinder engine simulations and establishment of a comprehensive wall-function formulation", Appl. Energy, Vol. 87, No. 5, pp. 1612-1630, (2010).
- T. Suzuki, Y. Oguri, and M. Yoshida , "Heat transfer in the internal combustion engines", SAE Tech. Papers, No. 2000-01-0300, (2000).
- H. Chen, T. Suzuki, W. Ikoma, Z. Liu, H. Matsui, E. Yilmaz, M. Ichiyanagi , "Validation of on-board incylinder wall heat transfer model of CI engines using measurements of wall temperature", Trans. Soc. Automotive Eng. Jpn., Vol. 50, No. 4, pp. 1018-1023, (2019).
- M. Ichiyanagi, H. Matsui, J. Woo, T. Kimura, T. Suzuki , "Development of on-board model for polytropic index prediction during compression stroke in CI engine", Trans. Soc. Automotive Eng. Jpn., Vol. 49, No. 2, pp. 168-174, (2018).
- M. Ichiyanagi, H. Joji, H. Matsui, E. Yilmaz, T. Suzuki , "Development of on-board polytropic index prediction model for injection timing optimization of diesel engines", Int. J. Industrial Res. Appl. Eng., Vol. 3, No. 2, pp. 61-68, (2018).
- M. Ichiyanagi, K. Kojima, H. Joji, H. Matsui, T. Suzuki , "Development of on-board in-cylinder gas flow model for heat loss estimation of diesel engines", Int. J. Industrial Res. Appl. Eng., Vol. 3, No. 2, pp. 69-78, (2018).
- Y. Enomoto, T. Ohya, M. Ishii, K. Enomoto, N. Kitahara , "Study on analysis of instantaneous heat flux flowing into the combustion chamber wall of an internal combustion engine: Examination in the case of consideration of heat storage term and the temperature dependency of the thermocouple's thermophysical properties", JSME Int. J. Series II, Vol. 35, No. 4, pp. 608-615, (1992).
- H. S. Carslaw, J. C. Jaeger , "Conduction of heat in solids", Clarendon Press, Oxford, (1959).
- M. Ichiyanagi, Y. Sawamura, D. Goto, K. Kojima, H. Matsui, H. Chen, T. Suzuki , "Validation of on-board in-cylinder gas flow model and wall heat transfer prediction model using PIV measurement in CI engine", Trans. Soc. Automotive Eng. Jpn., Vol. 50, No. 3, pp. 666-672, (2019).