Modelling of biodiesel chemical kinetics using decoupling methodology

It is of great significance to construct biodiesel mechanism. In this paper, the decoupling method was utilized to construct the constructed biodiesel mechanism with MD, MD5D and n-heptane and by comparing the simplified mechanism and the ignition delay time of biodiesel, we finally obtained a simplified mechanism containing 157 components and 384 reactions. Since multiple simplifications cause the superposition of ignition delay time errors, this study reduces the errors by modifying the forward factors of important reactions. The simulation results show that the simplified mechanism ignition times can be well matched. In this study, the variation of cylinder pressure with angle is also well represented in the diesel simulation.