Combined Simulations and OH-Chemiluminescence Measurements of the Combustion Process using Different Fuels under Diesel-Engine like Conditions 2007-01-0020
The influence of different fuels and injection pressures on the flame lift-off length (LOL), as well as the combustion structure under quiescent conditions in a heated high-pressure vessel were experimentally investigated using OH chemiluminescence measurements.
This data was used to validate the newly developed G-equation coupled with MRIF (G-MRIF) model, which was designed to describe the lifted Diesel combustion process. The achieved results are very promising and could be used as a tool to apply this combustion mode into Diesel engines.
Furthermore these measurements were used to validate the approach of a new combustion model, which was developed using former OH chemiluminescence measurements by the authors. Based on this approach the LOL is mainly determined by auto-ignition and therefore highly dependent on the cetane number. This model is presented in more detail within this work.
Citation: Pauls, C., Grünefeld, G., Vogel, S., and Peters, N., "Combined Simulations and OH-Chemiluminescence Measurements of the Combustion Process using Different Fuels under Diesel-Engine like Conditions," SAE Technical Paper 2007-01-0020, 2007, https://doi.org/10.4271/2007-01-0020. Download Citation
Christoph Pauls, Gerd Grünefeld, Stefan Vogel, Norbert Peters
RWTH Aachen University
2007 Fuels and Emissions Conference
SAE 2007 Transactions Journal of Fuels and Lubricants-V116-4