High-pressure ignition kinetics of 2-methyl-2-butene behind reflected shock waves Conference Paper uri icon


  • It is currently assumed that crude oil-based fuels will continue to dominate the transport fuel markets for at least the next 20 years. However, the complexity in their composition (hundreds or even thousands of components) makes impossible the detailed understanding of their combustion chemistry. Concerning gasoline fuels, numerous studies have been conducted over the past decades on alkanes (linear and branched) and, to a certain extent, aromatics. However, even though linear alkenes (or olefins) of interest (C4-C8 range) have been studied, it is worth noting that these linear molecules do not really represent the olefin fraction of a gasoline fuel. Indeed, studies on gasoline fuels typically conclude that a branched olefin such as 2-methyl-2-butene would represent better this fuel fraction. Unfortunately, to the best of the authors' knowledge, there is no combustion kinetics study available for 2-methyl-2-butene in the literature. During this study, ignition delay times for 2-methyl-2-butene have been measured behind reflected shock waves for mixtures highly diluted in Ar (99% dilution). Pressures around 1.5, 10, and 30 atm and equivalence ratios set to 0.5, 1.0, and 2.0 have been investigated over a large range of temperatures (1345-1730 K). It was possible to derive the following correlation from these data: τ(μs) = 3.57.10-5ρ0.81p-0.40exp (50.3 (kCal) /RT5).

author list (cited authors)

  • Mathieu, O., & Petersen, E. L.

publication date

  • January 2013