Kinetic modelling of a surrogate diesel fuel applied to 3D auto-ignition in HCCI engines

TL;DR

This paper develops and validates a detailed kinetic model for surrogate diesel fuel to accurately predict auto-ignition delays in HCCI engines using 3D simulations.

Contribution

It introduces a validated kinetic mechanism for surrogate diesel fuel and integrates it into a 3D auto-ignition model for HCCI engines, improving predictive accuracy.

Findings

The model accurately reproduces experimental HCCI auto-ignition delays.

Coupling the kinetic mechanism with 3D modeling captures cool flame region behavior.

The approach enhances understanding of auto-ignition in surrogate diesel fuels.

Abstract

The prediction of auto-ignition delay times in HCCI engines has risen interest on detailed chemical models. This paper described a validated kinetic mechanism for the oxidation of a model Diesel fuel (n-decane and α-methylnaphthalene). The 3D model for the description of low and high temperature auto-ignition in engines is presented. The behavior of the model fuel is compared with that of n-heptane. Simulations show that the 3D model coupled with the kinetic mechanism can reproduce experimental HCCI and Diesel engine results and that the correct modeling of auto-ignition in the cool flame region is essential in HCCI conditions.