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Selection of the Optimized Aftercooling System for Cummins Premium Diesel Engines
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Abstract
The ongoing need for improved fuel economy, longer engine life, lower emissions, and in some cases, increased power output makes lower charge air temperatures more desirable. In 1983, Cummins introduced the new BCIV engine at 400 H.P. (298 KW) with “Optimized Aftercooling”, and is now introducing this concept to its remaining 10 and 14 Litre premium diesel engines. This Tuned Low Flow Cooling design provides many advantages when compared to the other alternatives studied, which included air-to-air and systems incorporating two radiators. The selection process considered performance, durability, fuel economy, emissions, noise, investment, and total vehicle installed cost.
Computer simulations and vehicle tests were used to determine performance for each charge air cooling alternative. The simulations were used to guide prototype development and the selection of production hardware. The “Optimized Aftercooling” system takes full advantage of the engine cooling characteristics by using tuned flow controls to provide optimum charge air temperatures at all speeds, loads, and ambient temperatures.
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Citation
Bond, G. and Brooks, R., "Selection of the Optimized Aftercooling System for Cummins Premium Diesel Engines," SAE Technical Paper 841023, 1984, https://doi.org/10.4271/841023.Also In
References
- Sekar. R. R. “Trends in Diesel Engine Charge Air Cooling” SAE Paper No. 840351 1982
- Moranne Jean-Pierre Lukas Jerome J. “Air-to-Air Turbocharged Air Cooling Versus Air-to-Water Turbocharged Air Cooling” SAE Paper No. 840351 1984
- Häggh Bertil Ernst Holmer “Air-to-Air Charge Air Cooling for Truck Engines” SAE Paper No. 790770 1979
- Chu Neu Wade “Simulating the Lubrication System of a Diesel Engine” SAE Paper No. 770032 1977
- Kern Josef Wallner Rolf “The Selection and Evaluation of Charge Air Coolers for Vehicle Engines” SAE Paper No. 840350 1984
- Marzouk M. “Transient Response of Turbocharged Diesel Engines” PH.D. Thesis, University of London 1976
- Davidson Scott “On-Highway Performance Evaluation of a Cummins Oiesel Engine Featuring Optimized Charge Air Cooling” SAE Paper No. 840996 1984