A Model for the Physical Part of the Ignition Delay in a Diesel Engine

Abstract

<div class="htmlview paragraph">A theoretical model for the physical part of the ignition delay period in a direct injection diesel engine is derived, based on single droplet calculations. It is used in a parametric study to examine the influence of air pressure and temperature, initial fuel temperature, and mean droplet size and velocity on the physical processes that precede the chemical reactions.</div> <div class="htmlview paragraph">The model is also used to correlate the results of an experimental investigation of the effects of using different pressures and different injection nozzles on the magnitude of ignition delay.</div>