This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Model for the Unsteady Motion of Pollutant Particles in the Exhaust System of an I.C. Engine
Technical Paper
2003-01-0721
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The measurement of the various pollutant species (HC, CO, NO, etc.) has become one of the main issues in internal combustion engine research. This interest concerns not only their quantitative measurement but also the study of the mechanism of their formation. In fact, pollutant species concentration can be used as an indicator for the combustion characteristics. For instance, it enables the determination of a lean or a rich combustion, the percentage of EGR, etc.
The purpose of this research is to investigate the behavior of pollutant gas particles in the first part of an engine exhaust system through a detailed study of the unsteady flow in the exhaust pipe. The results are intended to designate the appropriate sensor positions which ensure accurate measurement results.
This investigation wants to track an inert component in the exhaust system, namely the NO gas. This component can be considered as inert since its reaction freezes at temperatures which are higher than outside the cylinder. For this purpose a thermodynamic model of the in-cylinder process has been matched with a model for the fluid dynamics of the exhaust gas process to simulate the exhaust conditions.
A set of simulations was performed for different working conditions of an engine. The simulated transient pressure field in the pipe has been compared with real data gathered on a V6 SI engine.
Authors
Topic
Citation
Locatelli, M., Geering, H., Marotta, M., and Pianese, C., "A Model for the Unsteady Motion of Pollutant Particles in the Exhaust System of an I.C. Engine," SAE Technical Paper 2003-01-0721, 2003, https://doi.org/10.4271/2003-01-0721.Also In
References
- Locatelli M. Onder C. H. Geering H. P. Exhaust-Gas Dynamics Model for Identification Purposes SAE Technical Paper Series 2003 SAE 2003-01-0368
- Simons M. Locatelli M. Onder C. H. Geering H. P. A Nonlinear Wall-Wetting Model for the Complete Operating Region of a Sequential Fuel Injected SI Engine SAE Technical Paper Series March 2000 SAE 2000-01-1260 (SP-1511)
- Arsie I. Pianese C. Rizzo G. Models for the Prediction of Performance and Emissions in a Spark Ignition Engine - A Sequentially Structured Approach SAE Technical Paper Series 1998 SAE 980779
- Ferrari G. Motori a combustione interna 2000
- Heywood J. B. Internal Combustion Engine Fundamentals McGraw Hilll 2nd 1988
- Casalini F. Vacca G. 41. congresso nazionale ATI 23-26 settembre 1986
- Benson R. S. Horlock J. H. Winterbone D. E. The Thermodynamics and Gas Dynamics of I.C.E. 1 Clarendon Press Oxford 1982
- Ferguson C. R. Internal Combustion Engine, Applied Thermo Sciences John Wiley and Sons 1986
- Ramos J. I. Internal Combustion Engine Modeling Hemisphere Publishing Corporation 1989
- Woschni G. A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine SAE Technical Paper Series 1967 SAE 67093
- Bocchi G. Motori a Quattro Tempi 1988
- Horlock J. H. Winterbone D. E. The Thermodynamics and Gas Dynamics 2 Clarendon Press Oxford 1986
- Zucrow M. J. Hoffman J. D. Gas Dynamics 1 2 John Wiley and Sons 1976
- Zhang H. Widener S. K. An Integrated Engine Cycle Simulation Model with Species Tracking in Piping System SAE Technical Paper Series 1996 SAE 960077