Visualization of Flow and Combustion Processes in a Square Piston Engine Simulator 870452
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.
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. Download Citation
Author(s):
J. Bonini, L. Q. Xia, E. Chau, K. Hom, H. E. Stewart, R. F. Sawyer, A. K. Oppenheim, A. Iiyama
Affiliated:
University of California at Berkeley, Visiting Scholar at the University of California at Berkeley from Nissan Motor Company
Pages: 12
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Fuel systems
Diesel / compression ignition engines
Combustion and combustion processes
Diesel fuels
Spark ignition engines
Pistons
Engine cylinders
Simulators
Windows and windshields
Particulate matter (PM)
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »