A Predictive Model for Spark Stretch and Mixture Ignition in SI Engines

2023-01-0202

04/11/2023

Event
WCX SAE World Congress Experience
Authors Abstract
Content
A physics-based spark ignition model was developed and integrated into a commercial CFD code. The model predicted the spark discharge process based on the electrical parameters of the secondary ignition circuit, tracked the spark motion as it was stretched by in-cylinder gas motion, and determined the resulting energy deposition to the gas. In concert with the existing kinetic solver in the CFD code, the resulting ignition and flame propagation processes were simulated. The model results have been validated against both imaging rig experiments of the spark in moving air and against engine experimental data. The model was able to replicate the key features of the spark and to capture the cyclic variability of high-dilution combustion when multiple engine cycles were simulated.
Meta TagsDetails
DOI
https://doi.org/10.4271/2023-01-0202
Pages
9
Citation
Briggs, T., and Conway, G., "A Predictive Model for Spark Stretch and Mixture Ignition in SI Engines," SAE Technical Paper 2023-01-0202, 2023, https://doi.org/10.4271/2023-01-0202.
Additional Details
Publisher
Published
Apr 11, 2023
Product Code
2023-01-0202
Content Type
Technical Paper
Language
English