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Effect of Thermal Management on Engine Performance
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The effect of engine coolant and oil temperature on the performance was experimentally evaluated on a Navistar 12.4 Liter engine. The engine speed and load selected for evaluation represented the engine conditions typically found during a Class-8 truck’s cruising operation. In order to study the effect of oil and coolant temperature in isolation, the production coolant-cooled oil-cooler was replaced with a separate oil and coolant conditioning system. The piston and liner surface temperature was also logged at select locations to provide solid temperature response to coolant and oil temperature changes.
The engine tests showed that oil temperature variation had greater impact on the engine performance compared to the coolant temperature. This performance improvement came primarily from the lower combustion heat rejection and reduced friction at moderate engine loads. At higher engine loads the performance improvement was largely due to lowered heat rejection. Engine operation at elevated coolant temperatures resulted in slightly higher exhaust enthalpy with little or no change to the engine performance. The liner and the piston temperature provided continuous feedback and helped to successfully navigate the engine through these areas of elevated coolant and oil temperature.
CitationRajkumar, M., Vojtech, R., and Cigler, J., "Effect of Thermal Management on Engine Performance," SAE Technical Paper 2018-01-0224, 2018, https://doi.org/10.4271/2018-01-0224.
Data Sets - Support Documents
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- National Academies of Sciences, Engineering, and Medicine, “Review of the 21st Century Truck Partnership: Third Report,” (Washington, DC, The National Academies Press, 2015), doi:10.17226/21784.
- Recovery Act - Systems Level Technology Development, Integration,and Demonstration for Efficient Class 8 Trucks (SuperTruck) and Advanced Technology Powertrains For Light-Duty Vehicles (ATP-LD) Funding Opportunity Number: DE-FOA-0000079.
- Heywood, J.B., “Internal Combustion Engine Fundamentals,” (McGraw Hill, 1988).
- Yousry, M., Johnson, J.H., and Pandit, S.M., “A Statistical Approach to Determining the Effects of Speed, Load, Oil and Coolant Temperature on Diesel Engine Specific Fuel Consumption,” SAE Technical Paper 780971, 1978, doi:10.4271/780971.
- Coughenour, G.E. and Hwang, L.K., “Evaluation of Non-Aqueous Propylene Glycol as an Engine Coolant for Heavy Duty Diesel Engines,” SAE Technical Paper 930584, 1993, doi:10.4271/930584.
- Ap, N.S. and Golm, N.C., “Thermal Balance Between the Engine Oil and the Engine Coolant of Turbo Diesel Engines,” SAE Technical Paper 970939, 1997, doi:10.4271/970939.
- Koch, F.W. and Haubner, F.G., “Cooling System Development and Optimization for DI Engines,” SAE Technical Paper 2000-01-0283, 2000, doi:10.4271/2000-01-0283.
- Ramadhas, A.S. and Xu, H., “Influence of Coolant Temperature on Cold Start Performance of Diesel Passenger Car in Cold Environment,” SAE Technical Paper 2016-28-0142, 2016, doi:10.4271/2016-28-0142.
- Navistar Service Manual for N13 and MaxxForce Engines, https://qualityservicemanual.com/sites/default/files/MaxxForce%2011%2C%2013%20Diesel%20Engine%20Service%20Manual.pdf
- Lancaster, D., Krieger, R., and Lienesch, J., “Measurement and Analysis of Engine Pressure Data,” SAE Technical Paper 750026, 1975, doi:10.4271/750026.
- Clark, K., Antonevich, J., Kemppainen, D., and Barna, G., “Piston Pin Dynamics and Temperature in a C.I. Engine,” SAE Int. J. Engines 2(1):91-105, 2009.