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Improving the Determination of Mass Fraction Burnt
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English
Abstract
The Rassweiler and Withrow method for determining mass fraction burnt from S.I. engine cylinder pressure data is widely used, but implementation details vary. The best form of implementation, and the effect of uncertainties in the assumptions made, have been investigated. Attention has been given to determining the end of combustion, the effect of signal noise on the pressure data, the effect of assumptions regarding the value and variation of apparent compression and expansion polytropic indices and, particularly, how these should be determined. The treatment of late burning cycles is also discussed. Versatile software has been developed for idle to full load studies with good tolerance to signal noise.
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Citation
Shayler, P., Wiseman, M., and Ma, T., "Improving the Determination of Mass Fraction Burnt," SAE Technical Paper 900351, 1990, https://doi.org/10.4271/900351.Also In
References
- Young M B “Cyclic Dispersion - Some Quantitive Cause and Effect Relationships” SAE Paper 800459 1980
- Yamamoto H Misumi M “Analysis of Cyclic Combustion Variation in a Lean Operating S.I. Engine” SAE Paper 870547 1987
- Krieger R B Borman G L “The Computation of Apparent Heat Release for I.C. Engines” ASME 66, WA/DGP-4 1966
- Gatowski J A Balles E N Chun K M Nelson F E Ekchian J A Heywood J B “Heat Release Analysis of Engine Pressure Data” SAE Paper 841359 1984
- Himyary A L Harim G A “A Diagnostic Two Zone Combustion Model for S.I. Engines based on Pressure-Time Data” SAE Paper 880199 1988
- Rassweiler G M Withrow L “Motion Pictures of Engine Flame Propagation Model for S.I. Engines” SAE Journal (Trans.) 42 185 204 1938
- Amann C A “Cylinder Pressure Measurement and its Use in Engine Research” SAE Paper 852067 1985
- Young M B Lienesch J H “An Engine Diagnostic Package (EDPAC) - Software for Analysing Cylinder Pressure-Time Data” SAE Paper 780967 1978
- Stone C R Green-Armytage D I “Comparison of Methods for the Calculation of Mass Fraction Burnt from Engine Pressure-Time Diagrams” Proc IMechE 201 D1 1987
- Shie S X Sheng H X “Numerical Simulation and Digital Signal Processing in Cylinder Pressure of I.C. Engines” Proc IMechE, CO/87 1987
- Savitzy, Golay “Smoothing Differentiation of Data by Simplified Least Squares Procedures” Analytical Chemistry 36 8 1627 2639 1964
- Alkidas A C Myers J P “Transient Heat Flux Measurements in the Combustion Chamber of a SI Engine” J Heat Transfer, ASME Trans 104 62 67 1982
- Dye A “A New Approach to Combustion Analysis” Automotive Engineer 11 i 32 35 1985
- Karim G A Al-Aloisi Y Anson W “Consideration of Ignition Lag and Combustion Time in a S.I. Engine using a Data Acquisition System.” SAE Paper 820758 1982