This paper develops an improved empirical autoignition model that includes the cool-flame phenomenon. It is calibrated for primary reference fuel (PRF) blends from 0 to 100 octane and also blends of methanol with 80 PRF. Methanol does not exhibit a cool-flame and hence the blends provide insight regarding the probable blending profile of multi-component gasolines and future synthetic fuels. The model was calibrated using ∼1500 detailed chemical kinetic simulations mapping a wide pressure, temperature and air-fuel ratio domain. Besides being a computationally elegant autoignition predictor for engine simulations, the model also provides a technically defensible structure for encapsulating experimental data from autoignition research devices such as rapid-compression machines.
An Improved Empirical Model for Describing Auto-ignition
Sae Technical Papers
2008 SAE International Powertrains, Fuels and Lubricants Congress ; 2008
2008-06-23
Conference paper
English
An improved empirical model for describing auto-ignition
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