The engine cooling system for a typical class 3 pickup truck with a medium duty diesel engine was modeled with a commercial code, GT-Cool, in order to explore the benefit of a controllable electric pump on the cooling performance and the pump operation. As the first step, the cooling system model with a conventional mechanical coolant pump was validated with experimental data. After the model validation, the mechanical pump submodel was replaced with the electric pump submodel, and then the potential benefit of the electric pump on fuel economy was investigated with the simulation. Based on coolant flow analysis, a modified thermostat hysteresis was proposed to reduce the recirculating flow and the electric pump effort. It was also demonstrated that the radiator size could be reduced without any cooling performance penalty by replacing the mechanical pump with the electric pump. The predicted results indicate that the cooling system with the electric pump can dramatically reduce the pump power consumption during the FTP 74 driving schedule and that the radiator can be downsized by more than 27% of the original size, under the grade load condition.
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January 2007
Technical Papers
Application of Controllable Electric Coolant Pump for Fuel Economy and Cooling Performance Improvement
Hoon Cho,
Hoon Cho
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
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Dohoy Jung,
Dohoy Jung
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
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Zoran S. Filipi,
Zoran S. Filipi
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
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Dennis N. Assanis,
Dennis N. Assanis
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
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John Vanderslice,
John Vanderslice
Ford Motor Company
, Dearborn, MI 48124
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Walter Bryzik
Walter Bryzik
U.S. Army Tank-Automotive Research
, Development & Engineering Center, Warren, MI 48397
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Hoon Cho
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
Dohoy Jung
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
Zoran S. Filipi
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
Dennis N. Assanis
Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48109
John Vanderslice
Ford Motor Company
, Dearborn, MI 48124
Walter Bryzik
U.S. Army Tank-Automotive Research
, Development & Engineering Center, Warren, MI 48397J. Eng. Gas Turbines Power. Jan 2007, 129(1): 239-244 (6 pages)
Published Online: January 9, 2006
Article history
Received:
March 31, 2005
Revised:
January 9, 2006
Citation
Cho, H., Jung, D., Filipi, Z. S., Assanis, D. N., Vanderslice, J., and Bryzik, W. (January 9, 2006). "Application of Controllable Electric Coolant Pump for Fuel Economy and Cooling Performance Improvement." ASME. J. Eng. Gas Turbines Power. January 2007; 129(1): 239–244. https://doi.org/10.1115/1.2227035
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