Abstract
A simplified analytical approach to the problem of determining the conditions for the onset of knock in spark ignition engines is made, using a criterion for knock based on a hypothetical gross chemical reaction of the fuel-air mixture in the end gas. It is then applied to auto-ignition studies in motored engines. Parameters such as compression ratio, initial temperature and pressure, fuel properties, ignition timing, speed and mixture strength are considered. This simplified treatment may form a basis for interpolating data, particularly when few parameters are being varied at a time. Some aspects of the treatment are illustrated by experimental engine data, drawing whenever possible from already published results.
Get full access to this article
View all access options for this article.