Numerical Modeling and Experimental Investigations of EGR Cooler Fouling in a Diesel Engine

Conference · Thu Jan 01 04:00:00 EST 2009

DOI:https://doi.org/10.4271/2009-01-1506· OSTI ID:958936

Abarham, Mehdi ^[1]; Hoard, John W. ^[1]; Styles, Dan ^[2]; Curtis, Eric W. ^[2]; Ramesh, Nitia ^[2]; Sluder, Scott ^[3]; Storey, John Morse ^[3]

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1. University of Michigan
2. Ford Motor Company
3. ORNL

EGR coolers are mainly used on diesel engines to reduce intake charge temperature and thus reduce emissions of NOx and PM. Soot and hydrocarbon deposition in the EGR cooler reduces heat transfer efficiency of the cooler and increases emissions and pressure drop across the cooler. They may also be acidic and corrosive. Fouling has been always treated as an approximate factor in heat exchanger designs and it has not been modeled in detail. The aim of this paper is to look into fouling formation in an EGR cooler of a diesel engine. A 1-D model is developed to predict and calculate EGR cooler fouling amount and distribution across a concentric tube heat exchanger with a constant wall temperature. The model is compared to an experiment that is designed for correlation of the model. Effectiveness, mass deposition, and pressure drop are the parameters that have been compared. The results of the model are in a good agreement with the experimental data.

• Research Organization: Oak Ridge National Laboratory (ORNL); Fuels, Engines and Emissions Research Center
• Sponsoring Organization: ORNL work for others
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 958936
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DEPOSITION
DIESEL ENGINES
DISTRIBUTION
EFFICIENCY
FOULING
HEAT EXCHANGERS
HEAT TRANSFER
HYDROCARBONS
PRESSURE DROP
SIMULATION
SOOT