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Auto-ignition quality of Diesel-like fuels in HCCI engines
Technical Paper
2005-01-2127
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In Homogeneous Charge Compression Ignition (HCCI) engines heat release occurs by auto-ignition and hence the fuel auto-ignition quality is very important. The auto-ignition quality of Diesel fuels is conventionally described by the cetane number. Conventional Diesel fuels are involatile compared to gasoline fuels and mixture preparation becomes far more critical in assessing their behaviour in HCCI engines. This paper considers the relationship between auto-ignition behaviour of Diesel-like fuels in a single-cylinder HCCI engine and the fuel cetane number under different mixture preparation strategies.
Three different fuel injection strategies were used in this study, port fuel injection (PFI), early direct-injection with colliding sprays and late direct-injected in the presence of EGR, akin to the Nissan MK concept. The fuels used were conventional Diesel fuels and model fuels with similar auto-ignition qualities. In the tests with PFI light Diesel-like fuels that consisted of n-heptane and toluene or iso-octane, with a maximum boiling point of 110 °C were used. In the tests with the direct-injection systems heavier Diesel-like fuels, such as conventional Diesel fuels and model fuels of kerosene and aromatic solvent, were used. The tests show that the cetane number can describe the auto-ignition quality of Diesel-like fuels in HCCI combustion well.
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Risberg, P., Kalghatgi, G., Ångstrom, H., and Wåhlin, F., "Auto-ignition quality of Diesel-like fuels in HCCI engines," SAE Technical Paper 2005-01-2127, 2005, https://doi.org/10.4271/2005-01-2127.Also In
References
- Ryan, T.W. Matheaus, A. “Fuel requirements for HCCI engine operation” THIESEL 2002, Thermo and Fluid Dynamic Processes in Diesel Engines 2002
- Montagne, X. Duret, P. “What will be the future combustion and fuel-related technology challenges?” “A new generation of engine combustion processes for the future?” Duret -P. Paris 2002 2-7108-0812-9 177
- Kalghatgi, G.T. Risberg P Ångström H-E “A Method of Defining Ignition Quality of Fuels in HCCI Engines” SAE 2003-01-1816 (JSAE 20030120) 2003
- Risberg, P. Kalghatgi, G. Ångström H-E “Auto-ignition quality of gasoline-like fuels in HCCI engines” SAE 2003-01-3215 2003
- Kalghatgi, G.T. Head, R.A. “The available and required auto-ignition quality of gasoline-like fuels in HCCI engines at high temperatures” SAE 2004-01-1969
- Risberg, P. Kalghatgi, G. Ångström H-E “The influence of EGR on auto-ignition quality of gasoline-like fuels in HCCI engines” SAE 2004-01-2952 2004
- Koopmans, L. Stromberg, E. Denbratt, I. “The influence of PRF and commercial fuels with high octane number on the auto-ignition timing of an engine operated in HCCI combustion mode with negative valve overlap” SAE 2004-01-1967
- American Society for Testing Materials: Designation “Standard test method for determination of ignition delay and derived cetane number (DCN) of Diesel fuel oils by combustion in a constant volume chamber” Annual book of ASTM Standards 5.05 2003
- Kalghatgi, G.T. “Auto-ignition quality of practical fuels and implications for fuel requirements of future SI and HCCI engines” SAE 2005-01-0239 2005
- Kimura, S. Aoki, O. Kitahara, Y. Aiyoshizawa, E. “Ultra-clean combustion technology combining a low-temperature and pre-mixed combustion concept for meeting future emission standards” SAE 2001-01-0200 2001
- Schindler W. Nöst M. Thaller W. Luxbacher T. MTZ 10 2001