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The Relationship Between Nitric Oxide and Work as Influenced by Engine Operating Conditions and Combustion System Parameters for a Direct Injection Diesel Engine
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Abstract
The objective of the work was to conduct a parametric study using the major combustion system variables to investigate the parameters controlling the nitric oxide and fuel economy trade-off, identify the major basic in-cylinder physical processes responsible, and relate these processes to the hardware features. The study was conducted using a multizone, fuel and air jet mixing model with a temperature and concentration dependent fuel reaction rate, and nitric oxide kinetics. The effect of engine variables on the relationship between nitric oxide emissions and work during the valve closed part of the engine cycle was studied by systematically changing twelve engine variables. Selected parameter variations were also repeated experimentally using a single cylinder engine. For the conditions simulated in this work, it is shown that parameters controlled by the engine air system, such as the in-cylinder state at intake valve closure, can be specified in a manner that results in nearly constant or increasing work with a decrease in nitric oxide. Fuel system variables, also for the conditions simulated, result in decreasing work with decreasing nitric oxide. Several groupings of engine variables were found which characterized the basic in-cylinder processes and related them to the nitric oxide emissions produced and the work levels achieved.
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Lipkea, W., DeJoode, A., and Christenson, S., "The Relationship Between Nitric Oxide and Work as Influenced by Engine Operating Conditions and Combustion System Parameters for a Direct Injection Diesel Engine," SAE Technical Paper 870269, 1987, https://doi.org/10.4271/870269.Also In
SAE 1987 Transactions: Reciprocating Engines--Spark Ignition and Diesel
Number: V96-4; Published: 1988-09-01
Number: V96-4; Published: 1988-09-01
References
- Shahed S. M. “The Role of Fuel-Air Mixing in Diesel Combustion and Emissions” ASME, Fluids Engineering Division, International Symposium on Flows in Internal Combustion Engines — III 28 1985 159 164
- Khan I. M. Wang C. H. T. “Factors Affecting Emissions of Smoke and Gaseous Pollutants from Direct Injection Diesel Engines” Instn. Mech. Engrs., Paper C151/71 293 303
- Khan I. M. Greeves G. Probert D. ML “Prediction of Soot and Nitric Oxide Concentrations in Diesel Exhaust” Instn. Mech. Engrs., Conference on Air Pollution Control in Transport Engines Paper C142/71 205 217
- Lipkea W. H. DeJoode A. D. “A Model of a Direct Injection Diesel Engine Combustion System for use in Cycle Simulation Studies” SAE Paper # 870573
- Torpey P. M. Whitehead M. J. Wright M. “Experiments in the Control of Diesel Emissions” Instn. Mech. Engrs., Conference on Air Pollution Control in Transport Engines Paper C124/71 21 33
- Shahed S. M. Chiu W. S. Lyn W. T. “A Mathematical Model of Diesel Combustion” Instn. Mech. Engrs., Paper C94/75 119 128
- Hodgetts D. Shroff H. D. “More on the Formation of Nitric Oxide in a Diesel Engine” Instn. Mech. Engrs., Conference on Combustion in Engines Paper C95/75 129 138
- Kamimoto T. Aoyagi Y. Matsui Y. Matsuoka S. “The Effect of Some Engine Variables on Measured Rates of Air Entrainment and Heat Release in a DI Diesel Engine” SAE Paper # 800253
- Van Basshuysen R. Bauder R. “Influence of Swirl Intensity and Air Flow on Mean Effective Pressure and Exhaust Gas Emissions of a Small High Speed DI Diesel Engine” Instn. Mech. Engrs., Paper C104/82 165 170
- Yu R. C. Shahed S. M. “Effects of Injection Timing and Exhaust Gas Recirculation on Emissions from a DI Diesel Engine” SAE Paper # 811234
- Hiroyasu H. Yoshimatsu A. Arai M. “Mathematical Model for Predicting the Rate of Heat Release and Exhaust Emissions in IDI Diesel Engines” Instn. Mech. Engrs., Paper C102/82 207 213
- Kuo T. W. Yu R. C. “Modeling of Transient Evaporating Spray Mixing Processes — Effect of Injection Characteristics” SAE Paper # 840266
- Van Gerpen J. H. Huang C. Borman G. L. “The Effects of Swirl and Injection Parameters on Diesel Combustion and Heat Transfer” SAE Paper # 850265
- Beer J. M. “The Significance of Modelling” J. of the Institute of Fuel 39 1966 466 473
- Wakuri Y. Fujii M. Amitani T. Tsuneya R. “Studies on the Penetration of Fuel Spray in a Diesel Engine” Bulletin of JSME 3 9 1960 123 130
- Keffer J. F. Baines W. D. “The Round Turbulent Jet in a Cross-wind” J. of Fluid Mechanics 15 1963 481 496
- Abramovich G. N. “The Theory of Turbulent Jets” MIT Press Cambridge, MA 1963
- Beer J. M. Chigier N. A. “Combustion Aerodynamics” Applied Science London 1972
- Way R. J. B. “Investigation of Interaction between Swirl and Jets in Direct Injection Diesel Engines using a Water Model” SAE Paper # 770412
- Morris C. J. Dent J. C. “The Simulation of Air Fuel Mixing in High Swirl Open Chamber Diesel Engines” Proc. Instn. Mech. Engrs. Automobile Division 190 Paper 47/76 503 513
- Turns S. R. Rau N. “Transient Gas Jet Penetration and Growth in a Swirling Flow” ASME, Fluids Engineering Division Flows in Internal Combustion Engines 21 28 1982
- Bassoli C. Bodritti G. Cornetti G. M. “Optimum Air Momentum and Spray Formation for D. I. Diesel” SAE Paper # 850501
- Tsai S. Lipkea W. H. DeJoode A. D. “Use of an Optimization Procedure with a Model of the Combustion System in a Direct Injection Diesel Engine” ASME Paper #87-ICE-34