Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23265
Title: Experimental investigation of the effect of exhaust gas cooling on diesel particulate
Authors: Ning, Z
Cheung, CS 
Liu, SX
Keywords: Coagulation
Condensation
Diesel engine
Exhaust-cooled temperature
Nucleation
Particulate
Volatile materials
Issue Date: 2004
Publisher: Pergamon Press
Source: Journal of aerosol science, 2004, v. 35, no. 3, p. 333-345 How to cite?
Journal: Journal of aerosol science 
Abstract: Particulate emission from diesel engines is receiving a great deal of attention due to its probable carcinogenic property. In the exhaust pipe of a diesel engine, the change of the exhaust gas temperature can result in nucleation and condensation of volatile materials and coagulation of particulates. The objective of the present study is to investigate experimentally the transformation of diesel particulates within the exhaust pipe when the exhaust gas is being cooled. Using a water cooler to control and adjust the exhaust gas temperature, the influences of exhaust-gas cooling on mass concentration, composition, size distribution and number-averaged diameter of the particulates, under different engine operating conditions, were analyzed. In addition, the effect of the flow rate of the exhaust gas in the cooler on the number-averaged diameter of the particulates was also discussed. The results showed that the transformation of the diesel particulates in the exhaust pipe depended mainly on the level of cooling, the concentration of the volatile materials, the initial concentration of the particulates in the exhaust, and the residence time of the exhaust gas within the exhaust pipe. The mass concentration and the soluble organic fraction of the particulates increased, while the gaseous hydrocarbon concentration decreased upon cooling the exhaust. Coupled with these were a decrease in the total number of particulates and an increase in the number-averaged diameter of the particulates, as measured by the Electrical Aerosol Size Analyzer. The results will be useful in understanding the mechanisms leading to changes in diesel particulates in an exhaust pipe.
URI: http://hdl.handle.net/10397/23265
ISSN: 0021-8502
EISSN: 1879-1964
DOI: 10.1016/j.jaerosci.2003.10.001
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

61
Last Week
0
Last month
0
Citations as of Aug 11, 2017

WEB OF SCIENCETM
Citations

48
Last Week
0
Last month
0
Citations as of Aug 13, 2017

Page view(s)

34
Last Week
1
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.