Thermodynamic modelling of a stratified charge spark ignition engine

Enthalten in
International journal of engine research 
Volume
21
Issue
5
Start Page
801
End Page
810
Citation
International Journal of Engine Research 5 (21): 801-810 (2020)
Publisher DOI
10.1177/1468087418784845
Publisher Link
https://doi.org/10.1177/1468087418784845
Scopus ID
2-s2.0-85049846869
Publisher
SAGE
© IMechE 2018. Combustion of a charge with spatially and temporally varying equivalence ratio in a spark ignition engine was modelled using the Leeds University Spark Ignition Engine quasi-dimensional thermodynamic code. New sub-models have been integrated into Leeds University Spark Ignition Engine that simulate the effect of burnt gas expansion and turbulent mixing on an initial equivalence ratio distribution. Realistic distribution functions were used to model the radially varying equivalence ratio. The new stratified fuel model was validated against experimental data, showing reasonable agreement for both the pressure trace and percentage heat released. Including the effect of turbulent mixing was found to be important to reproduce the trend in the differences between the stratified and homogeneous simulations.
Schlagworte
fuel stratification
spark ignition engines
Thermodynamic modelling
DDC Class
510: Mathematik