Comparison Between Heat Transfer and Knock Intensity on a Statistical Basis

Paper #:
  • 962101

Published:
  • 1996-10-01
Citation:
Ferraro, C., Marzano, M., Millo, F., and Bochicchio, N., "Comparison Between Heat Transfer and Knock Intensity on a Statistical Basis," SAE Technical Paper 962101, 1996, https://doi.org/10.4271/962101.
Pages:
17
Abstract:
Heat transfer in the combustion chamber of s.i. engines operating under knocking conditions has been detected and analyzed. Measurements have been carried out, cycle by cycle, on a CFR laboratory engine by means of a dedicated instrument and an original method. The relationship between heat transfer and knock intensity has been analyzed on a statistical basis, emphasizing knock intensity influence on heat transfer distribution. Moreover, the share of heat transfer more closely related to knock intensity has been highlighted: heat transfer is shown not to be significantly affected by knock intensity under light-to-medium knock conditions; on the contrary, the influence becomes evident under medium-to-heavy knock conditions.Eventually, heat transfer indexes influenced by knock intensity have been evaluated, allowing a comparison of knock-related thermal properties of fuels.
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