期刊
FUEL
卷 102, 期 -, 页码 289-298出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2012.07.041
关键词
Auto-ignition time; Ignition delay; Diesel surrogate; Chemiluminescence; Livengood-Wu method
资金
- Spanish Ministry of Science and Innovation [TRA2007-67961-C03/AUT]
- Regional Government of Castilla y Leon through GR 203 Excellence Research Group
In this work a method to determine the ignition delay of Diesel surrogate fuels using data from a constant volume combustion bomb is presented. The studied fuels are n-heptane (a common PRF) and a mixture of 50% of n-heptane and 50% of toluene (in mass) because both fuels have been proposed as Diesel fuel surrogates under HCCI. There are different concepts of spontaneous ignition times in engines or other devices. Auto-ignition times are experimentally obtained in a constant volume combustion bomb or in compression ignition engines, for variable conditions of pressure and temperature. In this work they are obtained in a combustion bomb using four different criteria (pressure, mechanical vibrations, OH* and CH* chemiluminescence emissions). The paper describes an original approach based on an inverse Livengood-Wu method to obtain the ignition delays (as a function of pressure and temperature) from the auto-ignition times. The obtained expressions for the fuels and their mixtures are compared with those of other authors with a reasonable agreement. (C) 2012 Elsevier Ltd. All rights reserved.
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