An EGR Cooler Fouling Model: Experimental Correlation and Model Uses

Paper #:
  • 2017-01-0535

Published:
  • 2017-03-28
Abstract:
Exhaust Gas Recirculation (EGR) coolers are regularly used in diesel engines to reduce the re-circulated gas temperature. A common problem with the EGR cooler is a reduction of the effectiveness due to the inner fouling layer of the tubes caused by thermophoresis, diffusion, hydrocarbon condensation and so on. The effectiveness decreases rapidly at first, and usually asymptotically stabilizes over time. At 2016 SAE World Congress in “Temperature and Deposit Thickness Effect on EGR Cooler Fouling Removal Mechanism - Part 1” a special experimental apparatus was discussed and results shown to explain the phenomena of fouling stabilization. A removal mechanism was found to offset fouling deposition mechanisms, with important factors including surface temperature, thickness, and shear velocity. A second presentation at last year’s Congress entitled “Temperature and Deposit Thickness Effect on EGR Cooler Fouling Removal Mechanism - Part 2” discussed a 1D fouling model developed using a physically relevant regression equation derived from the experimental data, allowing for prediction of the fouling behavior including deposition and removal effects. This paper will show additional experimental data including 2-dimensional “fin-type” heat exchange surfaces inserted into the special experimental apparatus. In combination with real world EGR cooler fouling data, the ability of the 1D fouling model to predict the fouling behavior of production representative EGR coolers will be explored. Moving beyond model correlation, potential uses of the model will be explored including up front prediction of EGR cooler fouling factors, time to reach fouling stabilization, and EGR cooler re-optimization.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Attention: This item is not yet published. Pre-Order to be notified, via email, when it becomes available.
Select
Price
List
Download
$22.00
Mail
$22.00
Members save up to 36% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Article
2016-02-02
Article
2016-02-02
Training / Education
2017-07-17
Article
2016-02-02
Technical Paper / Journal Article
2003-10-27
Technical Paper / Journal Article
2003-10-19
Technical Paper / Journal Article
2003-10-27