This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Computational Model for Simulation of Processes in Diesel Engines
Annotation ability available
Sector:
Event:
1995 SAE Brasil
Language:
English
Abstract
A computational model for the mathematical simulation of the working cycle of diesel engines is presented. The modeling considers the processes taking place in the cylinder as well as in the admission and exhaust ducts. The simulation of the processes in the cylinder is formulated according to the single zone combustion model and assuming chemical equilibrium in the species of the working fluid. This model can be applied to simulate engine using hydrocarbon fuels having carbon, hydrogen, oxygen and nitrogen in its molecular structure. The possibility of the air humity variation was also considered in the model. The processes in the admission and exhaust ducts were simulated by assuming that the flows in the ducts are unidimensional and the method of characteristics was employed to solve the partial differential equations that govern the propagation of the perturbations in a compressible medium. The model takes into account the heat transfer and friction between the gas and the ducts walls. Results are presented for a single cylinder diesel engine. A parametric study was conducted to evaluate the influence of the engine speed, the air-fuel ratio, the valve timing and the admission duct length on the engine performance and efficiency.
Topic
Citation
Veiásquez, J. and Milanez, L., "Computational Model for Simulation ofProcesses in Diesel Engines," SAE Technical Paper 952304, 1995, https://doi.org/10.4271/952304.Also In
References
- Kamimoto T. Kobayashi H. Combustion processes in diesel engines Progress in Energy and Combustion Science 17 163 189 1991
- Krieger R. B. Borman G. L. The computation of apparent heat release for internal combustion engines ASME paper, (66-WA/DGP-4) 1966
- Lipkea W. H. DeJoode A. D. A model of a direct injection diesel combustion system for use in cycle simulation and optimization studies SAE Trans., ( 870573 ) 1987
- McAulay K.J. Wu T. Chen S. K. Borman G. L. Myers P. S. Uyehara O. A. Development and evaluation of the simulation of the compression ignition engine SAE paper, ( 650451 ) 1965
- Woschni G. Engine cycle simulation, an effective tool for the development of medium speed diesel engines SAE Trans., ( 870570 ) 1987
- Kumar K. Gaur R. R. Garg R. D. Babu M. K. G. A thermodynamic simulation model for a four stroke medium speed diesel engine SAE paper, ( 840516 ) 1984
- Zacharias F. Analitical representation of the termodynamic properties of combustion gases SAE paper, ( 670930 ) 1967
- Hershey R. L. Eberhardt J. E. Hottel H. C. Thermodynamic properties of the working fluid in internal combustion engines SAE Trans. 409 424 1936
- Hiroyasu H. Kadota T. Models for combustion and formation of nitric oxide and soot in direct injection diesel engines SAE paper, ( 760129 ) 1976
- Lavoie G. A. Heywood J. B. Keck J. C. Experimental and theoretical study of nitric oxide formation in internal combustion engines Combustion Science and Technology 1 February 1970
- Spadaccini L. J. Chinitz W. An investigation of nonequilibrium effects in an internal combustion engine Transactions of the ASME: Journal of Engineering for Power 98 108 April 1972
- Powell H. N. Applications of an enthalpy-fuel/air ratio diagram to “First Law” combustion problems Transactions of the ASME 1129 1138 July 1957
- Olikara C. Borman G. L. A computer program for calculating properties of equilibrium combustion products with some aplications to I. C. engines SAE paper, ( 750468 ) 1975
- Way R. J. B. Methods for determination of composition and thermodynamic properties of combustion products for internal combustion engine calculations Proc. of the Instn. of Mech. Engs. 687 697 1977
- Stull D. R. Prophet H. JANAF Thermochemical Tables National Bureau of Standards Washington, D.C. second 1971
- Gallo W. L. R. Exergetic Analysis of Ethanol and Gasoline Fueled Engines Universidade Estadual de Campinas Campinas - SP, Brazil 1991
- Velasquez J. A. Simulation of Processes and Exergetic Analysis of a Diesel Engine Universidade Estadual de Campinas Campinas - SP, Brazil 1993
- Borman G. L. Nishiwaki K. Internal combustion engine heat transfer Progress in Energy and Combustion Science 13 1 46 1987
- Petrichenko R. M. Physical Fundamentals of In-Cylinder Processes of the Internal Combustion Engine I.L.U., Leningrad 1983
- Petrichenko R. M. Petrichenko M. R. Convection Heat Transfer in Reciprocating Engines Mashinostroenie, Leningrad 1979
- Orlin A. C. Kruglov M. G. Internal Combustion Engines: Theory of Reciprocating and Combined Cycle Engines Mashinostroenie, Moscow 1983
- Woschni G. A universally applicable equation for the instantaneous heat transfer coefficient in the internal combustion engine SAE Trans., ( 670931 ) 3065 3082 1967
- Austen A. E. W. Lyn W. T. Relation between fuel injection and heat release in a direct-injection engine and the nature of the combustion process Proceedings of the Institution of Mechanical Engineers: Automobile Division 1 47 62 1960-61
- Alcock J. F. Scott W. M. Some more light on diesel combustion Proceedings of the Institution of Mechanical Engineers: Automobile Division 5 179 200 1962-63
- Wiebe I. I. Recent Advances in Engines Working Cycles Mashizdat, Moscow 1962
- Watson N. Pilley A. D. Marzouk M. A combustion correlation for diesel engine simulation SAE paper, ( 800029 ) 1980
- Miyamoto N. Chikahisa T. Murayama T. Sawyer R. Description and analysis of diesel engine rate of combustion and perfomance using Wiebe's functions SAE Trans., ( 850107 ) 1985
- Kruglov M. G. Mednov A. A. Gas Dynamics in Turbocharged Internal Combustion Engines Mashinostroenie, Moscow 1988
- Payri F. Boada F. Macian V. Reduction of pumping losses by the use of a variable valve timing system Proc. of the Instn. of Mech. Engs. 1985
- Payri F. Corberan J. M. Boada F. Modifications to the method of characteristics for the analysis of the gas exchange process in internal combustion engines Proc. of the Instn. of Mech. Engs. 259 266 1986
- Benson R. S. The Termodynamics and Gas Dynamics of Internal Combustion Engines 1 Clarendon Press Oxford 1982
- Laforgia D. Ficarella A. Poppet valvle flow characteristics in internal combustion engines Annual Energy Sources Technology Conference and Exhibition. Basic Processes in Internal Combustion Engines 33 43 ASME - ICED 1989
- Sherman R. H. Blumberg P. N. The influence of induction and exhaust processes on emissions and fuel consumption in the spark ignition engine SAE Trans., ( 770880 ) 3025 3040 1977
- Incropera F. P. De Witt D. P. Fundamentals of Heat and Mass Transfer John Wiley & Sons, Inc. third 1990