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Cummins/TACOM Advanced Adiabatic Engine
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English
Abstract
Cummins Engine Company, Inc. and the U.S. Army have been jointly developing an adiabatic turbocompound engine during the last nine years. Although progress in the early years was slow, recent developments in the field of advanced ceramics have made it possible to make steady progress. It is now possible to reconsider the temperature limitation imposed on current heat engines and its subsequent influence on higher engine efficiency when using an exhaust energy utilization system.
This paper presents an adiabatic turbocompound diesel engine concept in which high performance ceramics are used in its design. The adiabatic turbocompound engine will enable higher operating temperatures, reduced heat loss, and higher exhaust energy recovery, resulting in higher thermal engine efficiency. This paper indicates that the careful selection of ceramics in engine design is essential. Adiabatic engine material requirements are defined and the possible ceramic materials which will satisfy these requirements are identified. Examples in design considerations of engine components are illustrated. In addition to these important points, the use of ceramic coatings is described in the design of engine components. The first generation adiabatic engine with ceramic coatings is described. The advanced adiabatic engine with minimum friction features utilizing ceramics is also presented. The advanced ceramic turbocharger turbine rotor as well as the oilless ceramic bearing design is described. Finally, the current status of the advanced adiabatic engine program culminating in the AA750 V-8 adiabatic engine is presented.
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Citation
Kamo, R. and Bryzik, W., "Cummins/TACOM Advanced Adiabatic Engine," SAE Technical Paper 840428, 1984, https://doi.org/10.4271/840428.Also In
References
- Kamo R. Bryzik W. “Adiabatic Turbocompound Diesel” 15th International Congress on Combustion Engines June, 1983 Paris, France 417 456
- Kamo R. Bryzik W. “Ceramics for Adiabatic Turbocompound Engine” Proc. of Sixth Army Material Technology Conference on Ceramics for High Performance Applications, III 1979 Orcas Island, Washington 187 216
- Bryzik W. Kamo R. “TACOM/Cummins Adiabatic Engine Program” SAE Paper 830314 , The Adiabatic Diesel Engine SP-543 21 45 SAE International Congress & Exposition Detroit, MI 1983
- Kamo R. Woods M. E. Geary W. C. “Ceramics for Adiabatic Diesel Engines” CIMTECH 4th St. Vincent, Italy June, 1979
- Woods M. E. Oda I. “PSZ Ceramics for Adiabatic Engine Components” SAE Paper 820429 February 1982 Detroit, MI
- Mueller J. I. Kobayashi A. S. Scott W. D. “Designs with Brittle Materials” University of Washington Seattle 1979
- Yamamoto S. Oda I. ZIRCOA 83 Stuttgart, Germany June 1983
- Timoney S. Flynn G. “A Low Friction Unlubricated SIC Diesel Engine” SAE Paper 830313 , The Adtabatic Engine SP-543 11 19 Detroit, MI 1983
- Miller R. A. Lowell C. A. “Failure Mechanisms of Thermal Barrier Coatings Exposed to Elevated Temperatures” International Conference on Metallurgical Coatings and Process Technology San Diego, CA April, 1982
- Stecura S. “Effect of Plasma Spray Parameters on Two Layer Thermal Barrier Coating System Life” NASA Technical Memorandum 51724 March 1981
- Kamo R. Bryzik W. “Ceramics for Adiabatic Engine” La Societe Des Ingenieurs De L'Automobile “Les Materiaux Dans L'Evolution Des Moteurs” November-December 1982 Paris, France
- Stang J. H. “Designing Adiabatic Engine Components” SAE Paper 780069 February 1978 Detroit, MI
- Kamo R. Woods M. E. Jones J. “Use of Ceramics for Adiabatic Diesel Engine” 6th International Symposium on Ceramics Bologna, Italy September, 1983