Thermal Combustion Modeling — Theoretical and Experimental Investigation of the Knocking Process 820759

Starting from the energy balance within a quasistationary flame front the principal dependence of the flame front velocity on the physical properties of the mixture are modeled. In closed systems (e.g. S.I. engines, bombs, etc.) however, flame propagation may lead to feedback processes accelerating the front velocity until infinity. The model calculation predicts two feedback processes: flame acceleration by turbulence enhancement and flame acceleration by enhancement of the temperature of the end gas. Comparing available engine data from the literature on knock effects with the model predictions indicates full agreement in all observed and predicted dependencies. It is concluded therefore that the proposed model is very promising in providing a quantitative description of knock.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.