Potential of a Controllable Engine Cooling System to Reduce NOx Emissions in Diesel Engines 2004-01-0054
This paper investigates the potential for reduced NOx emissions from the integration of thermal factors into the Diesel engine calibration process. NOx emissions from Diesel engines have been shown to be sensitive to engine operating temperature, which is directly related to the level of cooling applied to the engine, in addition to the main engine operating parameters such as injection timing and EGR ratio.
Experimental engine characterization of the main engine parameters against coolant temperature set point shows that engine cooling settings can extend the feasible lower limits of fuel consumption and emissions output from Diesel engine. With the adoption of an integrated calibration methodology including engine cooling set point, NOx emissions can be improved by up to 30% at crucial high speed/load operating points seen in the NEDC drive cycle with a minor reduction in fuel economy and small increase in CO output.
Citation: Pang, H., Brace, C., and Akehurst, S., "Potential of a Controllable Engine Cooling System to Reduce NOx Emissions in Diesel Engines," SAE Technical Paper 2004-01-0054, 2004, https://doi.org/10.4271/2004-01-0054. Download Citation
Author(s):
H. H. Pang, C. J. Brace, S. Akehurst
Affiliated:
University of Bath
Pages: 7
Event:
SAE 2004 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Heat Exchangers and Their Simulation, Thermal Management, and Fundamental Advances in Thermal and Fluid Sciences-SP-1818
Related Topics:
Nitrogen oxides
Engine cooling systems
Diesel / compression ignition engines
Fuel consumption
Fuel economy
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