Oxidation of Hydrocarbons Released from Piston Crevices of S.I. Engines 952539
This work presents a numerical method for predictions of HC oxidation in the cold turbulent wall jet emerging from the piston top land crevice in an S.I. engine, using a complex chemical reaction model. The method has been applied to an engine model geometry with the aim to predict the HC oxidation rate under engine - relevant conditions. According to the simulation a large amount of HC survives oxidation due to the long ignition delay of the wall jet emitted from the crevice. This ignition delay, in turn depends mainly on chemical composition and temperature of the gas mixture in the crevice and also on the temperature distribution in the cylinder boundary layer.
Citation: HellstrÖm, T. and Chomiak, J., "Oxidation of Hydrocarbons Released from Piston Crevices of S.I. Engines," SAE Technical Paper 952539, 1995, https://doi.org/10.4271/952539. Download Citation
Author(s):
Thomas HellstrÖm, Jerzy Chomiak
Affiliated:
Chalmers University of Technology
Pages: 12
Event:
1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1995 Transactions: Journal of Engines-V104-3
Related Topics:
Pistons
Engine cylinders
Corrosion
Chemicals
Gases
Hydrocarbons
Turbulence
Logistics
Simulation and modeling
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