Co-oxidation in the auto-ignition of primary reference fuels and n-heptane/toluene blends
| Autor: | David Johansson, Gautam Kalghatgi, Pehr Björnbom, Johan C. G. Andrae, Per Risberg |
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| Rok vydání: | 2005 |
| Předmět: |
Heptane
Chemistry General Chemical Engineering Homogeneous charge compression ignition General Physics and Astronomy Energy Engineering and Power Technology Thermodynamics CHEMKIN General Chemistry Kinetic energy Combustion Toluene chemistry.chemical_compound Fuel Technology Adiabatic process Shock tube |
| Zdroj: | Combustion and Flame. 140:267-286 |
| ISSN: | 0010-2180 |
| DOI: | 10.1016/j.combustflame.2004.11.009 |
| Popis: | Auto-ignition of fuel mixtures was investigated both theoretically and experimentally to gain further understanding of the fuel chemistry. A homogeneous charge compression ignition (HCCI) engine was run under different operating conditions with fuels of different RON and MON and different chemistries. Fuels considered were primary reference fuels and toluene/n-heptane blends. The experiments were modeled with a single-zone adiabatic model together with detailed chemical kinetic models. In the model validation, co-oxidation reactions between the individual fuel components were found to be important in order to predict HCCI experiments, shock-tube ignition delay time data, and ignition delay times in rapid compression machines. The kinetic models with added co-oxidation reactions further predicted that an n-heptane/toluene fuel with the same RON as the corresponding primary reference fuel had higher resistance to auto-ignition in HCCI combustion for lower intake temperatures and higher intake pressures. However, for higher intake temperatures and lower intake pressures the n-heptane/toluene fuel and the PRF fuel had similar combustion phasing. |
| Databáze: | OpenAIRE |
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