This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Description and Analysis of Diesel Engine Rate of Combustion and Performance Using Wiebe's Functions
Annotation ability available
Sector:
Language:
English
Abstract
Two laboratory engines, one direct, injection and one indirect injection, were operated for a range of speeds, loads, injection timings, fuels, and steady and transient conditions. Rate of combustion data were derived and analyzed using a double Wiebe's function approximation. It is shown that three of the six function parameters are constant for a wide range of conditions and that the other three can be expressed as linear functions of the amount of fuel injected during ignition lag. Engine noise, smoke, and thermal efficiency correlate with the parameters describing the amount of premixed combustion and diffusive combustion duration. These characteristics may be optimized by reducing the quantity of premixed combustion while maintaining the duration of diffusive combustion to less than 60°CA.
Recommended Content
| Technical Paper | A Combustion Correlation for Diesel Engine Simulation |
Authors
Citation
Miyamoto, N., Chikahisa, T., Murayama, T., and Sawyer, R., "Description and Analysis of Diesel Engine Rate of Combustion and Performance Using Wiebe's Functions," SAE Technical Paper 850107, 1985, https://doi.org/10.4271/850107.Also In
References
- Butler T.D. Cloutman L.D. Dukowicz J.K. Ramshaw J.D. Krieger R.B. “Toward a Comprehensive Model for Combustion in a Direct-Injection Stratified-Charge Engine,” Combustion Modeling in Reciprocating Engines Plenum Press 1978
- Gosman A.D. Harvey P.S. “Computer Analysis of Fuel-Air Mixing and Combustion in an Axisymmetric D.I. Diesel,” SAE Paper 820036 1982
- Lyn W.T. “Calculation of the Effect of Rate of Heat Release on the Shape of Cylinder-Pressure Diagram and Cycle Efficiency,” Proceedings IME (A.D.), No. 1 1960-61
- Miyamoto N. Murayama T. Fukazawa S. “Studies on Low Compression Ratio Diesel Engine-Relation between Combustibility and Performances,” Bulletin of the JSME 15-90 1972
- Murayama T. Miyamoto N. Sasaki S. Kojima N. “The Relation between Nitric Oxide Formation and Combustion Process in Diesel Engines,” 12th CIMAC Tokyo 1977
- Shipinski J. Uyehara O.A. Myers P.S. “Experimental Correlation between Rate-of-Injection and Rate-of-Heat-Release in a Diesel Engine,” ASME 68-DGP-11 1968
- Woschni G. Anisits F. “Experimental Investigation and Mathematical Presentation of Rate of Heat Release in Diesel Engines Dependent upon Engine Operating Conditions,” SAE Paper 7400086 1974
- Bowden C.M. Samaga B.S. Lyn W.T. “Rate of Heat Release in High-Speed Indirect Injection Diesel Engines,” Proceedings IME 184 1969-70
- Watson N. Pilley A.D. Marsouk M. “A Combustion Correlation for Diesel Engine Simulation,” SAE Paper 800029 1980
- Ghojel J.I. “A Study of Combustion Chamber Arrangements and Heat Release in D.I. Diesel Engines,” SAE Paper 821034 1982
- Stull D.R. Prophet H. “JANAF Thermo-chemical Tables,” National Bureau of Standards Washington, D.C. 1971
- Woschni G. “Beitrag zum Problem des Wärmüberqanqes im Verbrennungsmotor,” MTZ 26/4 1965
- Miyamoto N. Murayama T. “Discussions on the Calculating Techniques of the Rate of Heat Release and Burning Rate in Diesel Engines and Influencing Error Factors,” Nainen-Kikan 18-224 9 22 1979
- Wiebe I. “Halbempirische Formel für die Verbrennungsgeschwindigkeit,” Verlag der Akademie der Wissenschaften der UdSSR Moscow 1956 Sitkei G. Kraftstoff'aufbereitung und Verbrennung bei Dieselmoteren Springer-Verlag Berlin 156 159 1964
- Wolfer H.H. “Ignition Lag in the Diesel Engine,” VDI-Forsh 392 1938