A Model for the Unsteady Motion of Pollutant Particles in the Exhaust System of an I.C. Engine Swiss Federal Institute of Technology (ETH)

Format:

Conference/Event

Author/Creator:

Locatelli, Marzio, author.

Conference Name:

SAE 2003 World Congress & Exhibition (2003-03-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

The measurement of the various pollutant species (HC, CO, NO, et cetera) 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, et ceteraThe 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

Notes:

Vendor supplied data

Publisher Number:

2003-01-0721

Access Restriction:

Restricted for use by site license