The work described in this paper focuses on experiments to quantify the initial fuel mixing and gross fuel distribution in the cylinder during the intake stroke and its relationship to the large-scale convective flow field. The experiments were carried out in a water analog engine simulation rig, and, hence, limited to the intake stroke. The same engine head configuration was used for the three-dimensional PTV flow field and the PLIF fuel concentration measurements. High-speed CCD cameras were used to record the time evolution of the dye convection and mixing with a 1/4 deg of crank angle resolution (and were also used for the three-dimensional PTV measurements). The captured sequences of images were digitally processed to correct for background light non-uniformity and other spurious effects. The results are finely resolved evolution of the dye concentration maps in the center tumble plane. The three-dimensional PTV measurements show that the flow is characterized by a strong tumble, as well as pairs of cross-tumble, counter-rotating eddies. The results clearly show the advection of a fuel-rich zone along the wall opposite to the intake valves and later along the piston crown. It also shows that strong out-of-plane motions further contribute to the cross-stream mixing to result in a relatively uniform concentration at BDC, albeit slightly stratified by the lean fluid entering the cylinder later in the intake stroke. In addition to obtaining phase-averaged concentration maps at various crank angles throughout the intake stroke, the same data set is processed for a large number of cycle to extract spatial statistics of the cycle-to-cycle variability and spatial non-uniformity of the concentration maps. The combination of the three-dimensional PTV and PLIF measurements provides a very detailed understanding of the advective mixing properties of the intake-generated flow field. [S0742-4795(00)00103-4]
Skip Nav Destination
Article navigation
July 2000
Technical Papers
Experimental Investigation to Study Convective Mixing, Spatial Uniformity, and Cycle-to-Cycle Variation During the Intake Stroke in an IC Engine
Woong-Chul Choi,
Woong-Chul Choi
FloCoTec, Inc., Columbus, OH 43212
Search for other works by this author on:
Yann G. Guezennec
Yann G. Guezennec
The Ohio State University, Department of Mechanical Engineering, Columbus, OH 43210
Search for other works by this author on:
Woong-Chul Choi
FloCoTec, Inc., Columbus, OH 43212
Yann G. Guezennec
The Ohio State University, Department of Mechanical Engineering, Columbus, OH 43210
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division June 1, 1999; final revision received by the ASME Headquarters October 21, 1999. Technical Editor: D. Assanis.
J. Eng. Gas Turbines Power. Jul 2000, 122(3): 493-501 (9 pages)
Published Online: October 21, 1999
Article history
Received:
June 1, 1999
Revised:
October 21, 1999
Citation
Choi, W., and Guezennec, Y. G. (October 21, 1999). "Experimental Investigation to Study Convective Mixing, Spatial Uniformity, and Cycle-to-Cycle Variation During the Intake Stroke in an IC Engine ." ASME. J. Eng. Gas Turbines Power. July 2000; 122(3): 493–501. https://doi.org/10.1115/1.1286626
Download citation file:
Get Email Alerts
Cited By
An Efficient Uncertainty Quantification Method Based on Inter-Blade Decoupling for Compressors
J. Eng. Gas Turbines Power
Experimental Design Validation of A Swirl-Stabilized Burner with Fluidically Variable Swirl Number
J. Eng. Gas Turbines Power
Experimental Characterization of A Bladeless Air Compressor
J. Eng. Gas Turbines Power
Related Articles
Effect of Subgrid Modeling on the In-Cylinder Unsteady Mixing Process in a Direct Injection Engine
J. Eng. Gas Turbines Power (April,2003)
A Study of Cycle-to-Cycle Variations and the Influence of Charge Motion Control on In-Cylinder Flow in an IC Engine
J. Fluids Eng (May,2010)
Optimization of Annular Cylindrical and Spherical Fins in an Internal Combustion Engine Under Realistic Conditions
J. Thermal Sci. Eng. Appl (December,2010)
Second-Moment Closure Model for IC Engine Flow Simulation Using Kiva Code
J. Eng. Gas Turbines Power (April,2000)
Related Proceedings Papers
Related Chapters
Physiology of Human Power Generation
Design of Human Powered Vehicles
Introduction I: Role of Engineering Science
Fundamentals of heat Engines: Reciprocating and Gas Turbine Internal Combustion Engines
A Simple Carburetor
Case Studies in Fluid Mechanics with Sensitivities to Governing Variables