Prediction of Heat Transfer to the Walls for Autoignition Related Situations in SI Engines 2000-01-1084
A theoretical investigation is presented concerning how the heat transfer process from the gas in the combustion chamber, burned as well as the unburned gas regions, to the walls is affected by the autoignition phenomenon in SI engines. The zonal model in ref. [1] is adapted for the calculations. The radiative heat flux during the heat release period and the heat transfer in the thermal boundary layer by convection are predicted for situations when autoignition has occurred. The cylinder wall temperature is also used as a parameter in this study. The effects of engine operating parameters such as engine speed, timing of ignition, duration time of flame propagation and the fuel parameter Research Octane Number, i.e., RON, on the heat flux to the walls have been studied. The heat release is calculated for a detailed chemical kinetic model, refs. [1, 2 and 3].
Citation: Hajireza, S. and Sundén, B., "Prediction of Heat Transfer to the Walls for Autoignition Related Situations in SI Engines," SAE Technical Paper 2000-01-1084, 2000, https://doi.org/10.4271/2000-01-1084. Download Citation
Author(s):
Shahrokh Hajireza, Bengt Sundén
Affiliated:
Lund Institute of Technology
Pages: 10
Event:
SAE 2000 World Congress
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Sl Combustion-SP-1517, SAE 2000 Transactions Journal of Engines-V109-3
Related Topics:
Spark ignition engines
Combustion chambers
Heat transfer
Engine cylinders
Gases
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »