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Light Duty Diesel Advanced Thermal Management
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 10, 2005 by SAE International in United States
Annotation ability available
In response to demands for improved fuel economy and current trends of rising heat rejection, increasing fan power, and reduced engine compartment package space, a light duty diesel truck cooling system is replaced by an electric cooling system which features electric water pumps, an electric thermostat, electric fans, secondary cooling systems for the transmission and EGR, and a water-cooled charge air cooler with EGR added upstream of the CAC. The combination of these components improves the package space utilization and decreases the thickness of the heat exchanger module, resulting in improved underhood airflow. The temperature controllability is also significantly improved for the engine oil, engine coolant, intake manifold air, EGR, and engine block/valve seats. The improvements in cooling system efficiency are marked by a decrease in cooling system parasitic losses (fan and pump power) from 23.5 kW (base vehicle) to 3.6 kW, an 85% reduction.
CitationChalgren, R. and Allen, D., "Light Duty Diesel Advanced Thermal Management," SAE Technical Paper 2005-01-2020, 2005, https://doi.org/10.4271/2005-01-2020.
- Hnatczuk, W., Lasecki, M.P., Bishop, J., Goodell, J., “Parasitic Loss Reduction for 21st Century Trucks,” SAE Paper 2000-01-3423, 2000.
- Hollis, T.J., “Goodbye Analog Cooling, Hello Digital Control,” Engine Technology International, 1998.
- Wend, Dennis; Skalny, Paul; and Gorsich, David J., “Government-lndustry Partnership for Improving the Military's and Nation's Trucks: The 21st Century Truck Initiative,” SAE Paper 2000-01-3420, 2000.
- Allen, D.J., Lasecki, M.P., “Thermal Management Evolution and Controlled Coolant Flow,” SAE Paper 2001-01-1732, 2001.
- Arici, O., Johnson, J.H., Lehner, C.W., Parker G.G., “Design and Development of a Model Based Feedback Controlled Cooling System for Heavy Duty Diesel Truck Applications Using a Vehicle Engine Cooling System Simulation,” SAE Paper 2001-01-0336, 2001.
- Chalgren, R.D., Parker, G.G., Arici, O., Johnson, J.H., “A Controlled EGR Cooling System for Heavy Duty Diesel Applications Using the Vehicle Engine Cooling System Simulation,” SAE Paper 2002-01-0076, 2002.
- Chalgren, R. D. “Thermal Comfort and Engine Warm-Up Optimization of a Low-Flow Advanced Thermal Management System,” SAE Paper 2004-01-0047, 2004.
- Allen, D.J., Hnatczuk, W., Lasecki, M.P., Chalgren, R.D., “Advanced Thermal Management for Military Applications,” Paper H0-01, 24th Army Science Conference, November 30th 2004.
- Chalgren, R.D., “Development and Verification of a Heavy Duty 42/14V Electric Powertrain Cooling System,” SAE Paper 2003-01-3416, 2003.
- Chalgren, R.D., “A Controllable Water Cooled Charge Air Cooler for Diesel Trucks,” SAE Paper 2004-01-2614, 2004.
- Wagner J. R., Srinivasan V., Dawson D. M., Marotta E. E., “Smart Thermostat and Coolant Pump Control for Engine Thermal Management Systems”, SAE Paper 2003-01-0272.
- Brace, CJ, Burnham-Slipper, H., Wijetunge, R.S., Vaughan, N.D., Wright, K., Blight, D., “Integrated Cooling Systems for Passenger Vehicles,” SAE Paper 2001-01-1248.
- Semel, R. R., “Fuel Economy Improvements Through Improved Automatic Transmission Warmup - Stand Alone Oil to Air (OTA) Transmission Cooling Strategy with Thermostatic Cold Flow Bypass Valve,” SAE Paper 2001-01-1760, 2001.
- Chalgren, R. D., Traczyk, T., “Advanced Secondary Cooling Systems for Light Trucks,” SAE Paper 2005-01-1380, 2005.