This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Telemetry Linkage System for Piston Temperature Measurements in a Diesel Engine
Annotation ability available
Sector:
Language:
English
Abstract
A telemetry linkage system has been developed for piston temperature measurements in a direct-injection diesel engine. In parallel with the development of the telemetry linkage system, fast response thermocouples were installed at three piston locations - two on the bowl surface and one on the crown surface. A novel design was used to achieve electrical continuity between the piston and the connecting rod by means of a flexible steel strap pivoted on the piston skirt. The telemetry linkage system was then used to transport the electrical wires from the thermocouples to the external data acquisition system. A series of tests was run to determine the effects of location and load on piston surface temperatures. Surface temperature profiles varied substantially among the three locations, reflecting the differences in the combustion and heat flow characteristics of their surrounding regions. Mean piston surface temperatures and cyclic swings increased with increasing load at constant speed for all three locations. Three tests were also conducted under the same speed and load to examine the effect of soot deposits on surface temperatures after the engine had accumulated 1, 5, and 10 total running hours, respectively. It was determined that deposit formation on a surface over the first five running hours causes the most significant reductions in the mean temperature and the cyclic swings of that surface. Overall, it was demonstrated that the telemetry linkage system can provide a reliable and effective means for measuring instantaneous properties of reciprocating diesel engine components.
Recommended Content
Authors
Topic
Citation
Assanis, D. and Friedmann, F., "A Telemetry Linkage System for Piston Temperature Measurements in a Diesel Engine," SAE Technical Paper 910299, 1991, https://doi.org/10.4271/910299.Also In
References
- Borman, G. L. Nishiwaki, K. “Internal Combustion Engine Heat Transfer,” Prog. Energy Combust. Sci. 1987 13 1 46
- Assanis, D. N. Badillo, E. “Transient Heat Conduction in Low-Heat-Rejection Engine Combustion Chambers,” SAE Paper 870156 SAE Trans. 1987
- Amsden, A. A. O'Rourke, P. J. Butler, T. D. “KIVA-II: A Computer Program for Chemically Reactive Flows with Sprays,” LA-11560-MS 1989
- Wiese, K. L. Bonne, M. A. Friedmann, F. A. Assanis, D. N. “Combustion and Heat Transfer Studies in a Direct-Injection Diesel Engine,” SAE Paper 891902 1989
- Westbrook, M. H. “A Telemetering System for Piston Engine Research,” Proc. International Telemetering Conference 1 154 London 1963
- Westbrook, M. H. Munro, R. “Electronic Instrumentation Techniques in the Development of Pistons and Rings,” Proc. Inst. Mech. Engrs. 180 3G 1965-66
- Munro, R. Laws, A. M. Rhodes, M. L. P. Ingenieurs de I'Automobile 42 563 580 1969
- Iida, Y. Tanaka, K. Fuse, S. “Contact-Point Method for Measuring Sliding Face Temperature and its Applications,” SAE Paper 830311 1983
- Furuhama, S. Tada, T. Nakamura, T. “Some Measurements of the Piston Temperature in a Small Type Gasoline Engine” Bulletin of J.S.M.E. 7 26 422 429 1964
- Furuhama, S. Enomoto, Y. “Piston Temperature of Automobile Gasoline Engines in Driving on the Road,” Bulletin J.S.M.E. 16 99 1385 1400 1973
- Alkidas, A. C. Myers, J. P. “Transient Heat Flux Measurements in the Combustion Chamber of a Spark-Ignition Engine,” J. Heat Transfer, ASME Trans. 104 62 67 1982
- Whitehouse, N. D. “Heat Transfer in a Quiescent Chamber Diesel Engine” Proc. Inst. Mech. Engrs. 85 72 71 963 975 1970-71
- Dent, J. C. Suliaman, S. J. “Convective and Radiative Heat Transfer in a High Swirl Direct Injection Diesel Engine,” SAE Paper 770407 1977
- Sarsten, A. “Survey of Theoretical and Experimental Evaluation of Thermal Loading of Diesel Engines in Norway,” SAE Paper 790819 1979
- Enomoto, Y. Furuhama, S. “Heat Transfer into Ceramic Combustion Chamber Wall of Internal Combustion Engines,” SAE Paper 861276 1986
- Assanis, D.N. Badillo E. “Evaluation of Alternative Thermocouple Designs for Transient Heat Transfer Measurements in Metal and Ceramic Engines,” SAE Paper 890571 1989
- Nanigian, J. “Thermal Sensor Characteristics,” Measurements and Controls 1982
- Gatowski, J. A. Smith, M. K. Alkidas, A. C. “An Experimental Investigation of Surface Thermometry and Heat Flux,” Experimental Thermal and Fluid Science 2 280 292 1989
- Lyn, W. T. “Study of Burning Rate and Nature of Combustion in Diesel Engines,” Proceedings of Ninth International Symposium on Combustion 1069 1082 The Combustion Institute 1962
- Kamel, M. Watson, N. “Heat Transfer in the Indirect Injection Diesel Engine,” SAE Paper 790826 1979
- Overbye, V. D. Bennethum, J. E. Uyehara, O. A. Myers, P. A. “Unsteady Heat Transfer in Engines” SAE Paper 201C SAE Trans. 69 1961
- Shigley, J. Mitchell, L. Mechanical Engineering Design , McGraw-Hill, Inc. Fourth 1983