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Heat Transfer Experiments in an Insulated Diesel
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English
Abstract
A set of heat flux data was obtained in a Cummins single cylinder NH-engine coated with zirconia plasma spray. Data were acquired at two locations on the head, at several speeds and several load levels, using a thin film Pt-Pt/Rh thermocouple plated onto the zirconia coating. Careful attention was given to the probe design and to data reduction to assure high accuracy of the measurements. The data showed that the peak heat flux was consistently reduced by insulation and by the increasing wall temperature. The mean heat flux was also reduced. The results agree well with a previously developed flow-based heat transfer model. This indicates that the nature of the heat transfer process was unchanged by the increased wall temperature. Based on these results, the conclusion is drawn that insulation and increasing wall temperatures lead to a decrease in heat transfer and thus contribute positively to thermal efficiency.
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Authors
Citation
Morel, T., Wahiduzzaman, S., and Fort, E., "Heat Transfer Experiments in an Insulated Diesel," SAE Technical Paper 880186, 1988, https://doi.org/10.4271/880186.Also In
References
- Eckert, E. R. G. Drake, R. M. 1972 “ Analysis of Heat and Mass Transfer .” McGraw-Hill 783
- Enomoto, Y. Furuhama, S. 1986 “Heat Transfer into Ceramic Combustion Chamber Wall of Internal Combustion Engines,” SAE Paper 861276
- Furuhama, S. Enomoto, Y. 1987 “Heat Transfer into Ceramic Combustion Wall of Internal Combustion Engines,” SAE Paper 870153
- Havstad, P. H. Garwin, I. J. Wade, W. R. 1986 “A Ceramic Insert Uncooled Diesel Engine,” SAE Paper 860447 , SAE Congress Detroit
- Hoag, K. 1986 “Measurement and Analysis of the Effect of Wall Temperature on Instantaneous Heat Flux,” SAE Paper 860312
- Huang, J. C. Borman, G. L. 1987 “Measurements of Instantaneous Heat Flux to Metal and Ceramic Surfaces in a Diesel Engine,” SAE Paper 870155
- Keribar, R. Morel, T. 1987 “Thermal Shock Calculations in IC Engines,” SAE Paper 870162 , SAE Congress Detroit
- Morel, T. Keribar, R. 1985 “A Model for Predicting Spatially and Time Resolved Convective Heat Transfer in Bowl-in-Piston Combustion Chambers,” SAE Paper 850204 , SAE Congress Detroit
- Morel, T. Keribar, R. 1986 “Heat Radiation in D.I. Diesel Engines,” SAE Congress Detroit
- Morel, T. Keribar, R. Blumberg, P. N. 1986 “Cyclical Thermal Phenomena in Engine Combustion Chamber surfaces,” SAE Paper 850360 , SAE Congress Detroit
- Morel, T. Keribar, R. Blumberg, P. N. Fort, E. F. 1986 “Examination of Key Issues in Low Heat Rejection Engine Concepts,” SAE Paper 860316 , SAE Congress Detroit
- Morel, T. Wahiduzzaman, S. Tree, D. L. DeWitt, D. P. 1987 “Effect of Speed Load and Location on Heat Transfer in Diesel Engine — Measurements and Predictions,” SAE Paper 870154 , SAE Congress Detroit
- Taylor, J. R. 1982 An Introduction to Error Analysis University Science Book, Oxford University Press
- Wahiduzzaman, S. 1985 “A Study of Heat Transfer Due to a Decaying Swirling Flow in a Cylinder with Closed Ends,” PhD Thesis Purdue University West Lafayette, Indiana
- Wahiduzzaman, S. Morel, T. Timar, J. DeWitt, D. P. 1987 “Experimental and Analytical Study of Heat Radiation in a Diesel Engine,” SAE Paper 870571 , SAE Congress Detroit
- Woschni, G. Spindler, W. 1987 “Heat Transfer with Insulated Combustion Chamber Walls and Its Influence on the Performance of Diesel Engines,”
- Woschni, G. Spindler, W. Kolesa, K. 1987 “Heat Insulation of Combustion Chamber Walls — A Measure to Decrease the Fuel Consumption of I.C. Engines?,” SAE Paper 870339