A Comparison of the Effect of Combustion Chamber Surface Area and In-Cylinder Turbulence on the Evolution of Gas Temperature Distribution from IVC to SOC: A Numerical and Fundamental Study 2006-01-0869
It has previously been shown experimentally and computationally that the process of Homogeneous Charge Compression Ignition (HCCI) is very dependent on the pre-combustion gas temperature field. This study looks in detail at how temperature fields can evolve by comparing results of two combustion chamber designs, a piston with a square bowl and a disk shaped piston, and relates these temperature fields to measured HCCI combustion durations.
The contributions of combustion chamber surface area and turbulence levels to the gas temperature evolution are considered over the crank angle range from intake valve closure to top-dead-center. This is a CFD study, whose results were transformed into traditional analysis methods of convective heat transfer (q=h*A*ΔT) and boundary layers.
Citation: Hessel, R., Aceves, S., and Flowers, D., "A Comparison of the Effect of Combustion Chamber Surface Area and In-Cylinder Turbulence on the Evolution of Gas Temperature Distribution from IVC to SOC: A Numerical and Fundamental Study," SAE Technical Paper 2006-01-0869, 2006, https://doi.org/10.4271/2006-01-0869. Download Citation
Randy P. Hessel, Salvador M. Aceves, Daniel L. Flowers
University of Wisconsin-Madison, Engine Research Center, Lawrence Livermore National Laboratory
SAE 2006 World Congress & Exhibition
Homogeneous Charge Compression Ignition (HCCI) Combustion 2006-SP-2005, SAE 2006 Transactions Journal of Engines-V115-3