To permit the prediction of the history of heat release during the early stages of combustion a combustion model is presented. This model is based on the concept of a varying delay mechanism which was proposed by the present authors in a previous paper. In the present paper, some refinement of this model is attained by taking several factors into account. A number of examples have been investigated both theoretically and experimentally and the results compared. The results show that the present model gives an adequate explanation of diesel knock and related matters.
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