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Ignition Delay Correlation for Engine Operating with Lean and with Rich Fuel-Air Mixtures
Technical Paper
2016-01-0699
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An ignition delay correlation encompassing the effects of temperature, pressure, residual gas, EGR, and lambda (on both the rich and lean sides) has been developed. The procedure uses the individual knocking cycle data from a boosted direct injection SI engine (GM LNF) operating at 1250 to 2000 rpm, 8-14 bar GIMEP, EGR of 0 to 12.5%, and lambda of 0.8 to 1.3 with a certification fuel (Haltermann 437, with RON=96.6 and MON=88.5). An algorithm has been devised to identify the knock point on individual pressure traces so that the large data set (of some thirty three thousand cycles) could be processed automatically. For lean and for rich operations, the role of the excess fuel, air, and recycled gas (which has excess air in the lean case, and hydrogen and carbon monoxide in the rich case) may be treated effectively as diluents in the ignition delay expression.
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McKenzie, J. and Cheng, W., "Ignition Delay Correlation for Engine Operating with Lean and with Rich Fuel-Air Mixtures," SAE Technical Paper 2016-01-0699, 2016, https://doi.org/10.4271/2016-01-0699.Also In
References
- Lake , T. , Stokes , J. , Murphy , R. , Osborne , R. et al. Turbocharging Concepts for Downsized DI Gasoline Engines SAE Technical Paper 2004-01-0036 2004 10.4271/2004-01-0036
- Petitjean , D. , Bernardini , L. , Middlemass , C. , and Shahed , S. Advanced Gasoline Engine Turbocharging Technology for Fuel Economy Improvements SAE Technical Paper 2004-01-0988 2004 10.4271/2004-01-0988
- Heywood , J Internal Combustion Engine Fundamentals McGraw -Hill 0-07-028637 1988
- Livengood , J.C. , Wu , P.C. Correlation of Autoignition Phenomena in Internal Combustion Engines and Rapid Compression Machines 5th Symp. (Int.) on Combustion 347 356 Reinhold Publ. Corp. 1955
- Minetti , R. Carlier , M. , Ribaucour , M. , Therssen , E. , and Sochet , L.R. A Rapid Compression Machine Investigation of Oxidation and Auto-Ignition of n-Heptane: Measurements and Modeling Comb. & Flame 102 298 309 1995
- Fieweger , K. , Blumenthal , R. , and Adomeit , G. Self-Ignition of SI Engine Model Fuels: A Shock Tube Investigation at High Pressure Comb. & Flame 109 599 619 1997
- Cox , R.A. , Cole , J.A. Chemical Aspects of the Autoignition of Hydrocarbon-Air Mixtures Comb. & Flame 60 109 123 1985
- Westbrook , C.K. , Warnatz , J. , and Pitz , W.J. A Detailed Chemical Kinetic Reaction Mechanism for the Oxidation of iso-Octane and n-Heptane over an Extended Temperature Range and its Applications to Analysis of Engine Knock 22nd Symp. (Int.) on Combustion 893 The Combustion Institute 1988
- Kalghatgi , G. , Babiker , H. , and Badra , J. A Simple Method to Predict Knock Using Toluene, N-Heptane and Iso-Octane Blends (TPRF) as Gasoline Surrogates SAE Int. J. Engines 8 2 505 519 2015 10.4271/2015-01-0757
- Douaud , A. and Eyzat , P. Four-Octane-Number Method for Predicting the Anti-Knock Behavior of Fuels and Engines SAE Technical Paper 780080 1978 10.4271/780080
- Hoepke , B. , Jannsen , S. , Kasseris , E. , and Cheng , W. EGR Effects on Boosted SI Engine Operation and Knock Integral Correlation SAE Int. J. Engines 5 2 547 559 2012 10.4271/2012-01-0707
- König , G. , Maly , R. , Bradley , D. , Lau , A. et al. Role of Exothermic Centres on Knock Initiation and Knock Damage SAE Technical Paper 902136 1990 10.4271/902136
- The “filtfilt” function Matlab Signal Processing Toolbox The Math Works Inc.
- Cavina , N. , Corti , E. , Minelli , G. , Moro , D. et al. Knock Indexes Normalization Methodologies SAE Technical Paper 2006-01-2998 2006 10.4271/2006-01-2998
- GT-Power Gama Technology