Detailed Chemistry Promotes Understanding of Octane Numbers and Gasoline Sensitivity

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• 作者：Marco Mehl ; Tiziano Faravelli ; Fulvio Giavazzi ; Eliseo Ranzi ; Pietro Scorletti ; Andrea Tardani ; Daniele Terna
• 刊名：Energy & Fuels
• 出版年：2006
• 出版时间：November 2006
• 年：2006
• 卷：20
• 期：6
• 页码：2391 - 2398
• 全文大小：322K
• 年卷期：v.20,no.6(November 2006)
• ISSN：1520-5029

文摘

Detailed kinetic models of pyrolysis and combustion of hydrocarbon fuels are now reliable tools which canaid the design of internal combustion engines required to meet the increasingly stringent pollutant formationand engine efficiency standards. The aim of this paper is to discuss and verify the potential of these kineticmodels in analyzing the knock related combustion behavior of hydrocarbon fuels with particular regard tooctane numbers and octane sensitivity. Detailed chemistry not only helps to explain the different reactivitiesof alkanes and alkenes but also the combustion behavior of hydrocarbon mixtures. A two-zone model of aspark ignition engine, coupled with the detailed chemistry of combustion processes, was developed and utilizedfor the predictions of octane numbers. This model explains the effect of various components on the knockingbehavior of the fuel under different operating conditions and is thus a useful tool both in formulating newfuels and designing new engines.