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Visualization of Flow and Combustion Processes in a Square Piston Engine Simulator
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English
Abstract
A square-piston engine simulator used at Berkeley to study both spark-ignited and diesel engine processes is described. The square piston configuration provides optical access to fluid mechanical and combustion processes through two fiat quartz windows used as cylinder walls. Results from three previous research projects are reviewed to illustrate the engine's capabilities. Since these studies, we developed and used a color schlieren cinematography system to record in-cylinder processes. Color schlieren movies of both spark-ignition and diesel combustion reveal the essential fluid mechanical and combustion features within the engine. For these movies, we redesigned the diesel fuel system and installed a new liquid fuel injection system for spark-ignited operation. By preventing fuel and soot condensation on the windows, these new fuel systems improved the quality of our Schlieren images.
Authors
- J. Bonini - University of California at Berkeley
- L. Q. Xia - University of California at Berkeley
- E. Chau - University of California at Berkeley
- K. Hom - University of California at Berkeley
- H. E. Stewart - University of California at Berkeley
- R. F. Sawyer - University of California at Berkeley
- A. K. Oppenheim - University of California at Berkeley
- A. Iiyama - Visiting Scholar at the University of California at Berkeley from Nissan Motor Company
Topic
Citation
Bonini, J., Xia, L., Chau, E., Hom, K. et al., "Visualization of Flow and Combustion Processes in a Square Piston Engine Simulator," SAE Technical Paper 870452, 1987, https://doi.org/10.4271/870452.Also In
References
- Namazian M. Hanson S. Lyford-Pike E. Sanchez-Barsse J. Heywood J. Rife J, “Schlieren Visualization of the Flow and Density Fields in the Cylinder of a Spark-Ignition Engine,” SAE paper 800044
- Personal communication 1984
- Edwards C.F. Stewart H.E. Oppenheim A.K. “A Photographic Study of Plasma Ignition Systems,” SAE paper 850077
- Oppenheim A.K. Cheng R.K. Teichman K. Smith O.I. Sawyer R.F. Hom K. Stewart H.E. “A Cinematographic Study of Combustion in an Enclosure Fitted with a Reciprocating Piston,” Stratified Charge Engines 127 Institution of Mechanical Engineers, I Mech E Conference Publications 1976-11 London 1977
- Richman R.M. Reynolds W.C. “The Development of a Transparent Cylinder Engine for Piston Engine Fluid Mechanics Research,” SAE paper 840379
- Brehob D.D. “Compression Ignition of Coal Slurries,” Ph.D. thesis University of California Berkeley 1985
- Fulgelso L.D. “An Optical Study of Fluid Mechanics During the Intake Process of an internal Combustion Engine,” Master of Science project University of California Berkeley 1985
- Keating E.L. Blaser R.F. Pouring A.A. “Quasi-Equilibrium Air Standard Heat Balanced Cycle Analysis,” SAE paper 78036