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Potential of a Controllable Engine Cooling System to Reduce NOx Emissions in Diesel Engines
Technical Paper
2004-01-0054
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
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.
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Authors
Topic
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.Also In
Heat Exchangers and Their Simulation, Thermal Management, and Fundamental Advances in Thermal and Fluid Sciences
Number: SP-1818; Published: 2004-03-08
Number: SP-1818; Published: 2004-03-08
References
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- Couetouse H Gentile ‘Cooling System Control in Automotive Engines’ SAE 920788
- Finlay IC Tugwell W Biddulph T Marshall RA ‘The Influence of Temperature on The Performance of a Four Cylinder 1100cc Engine Employing a Dual Cooling System’ Proceding of Int. Centre of Heat and Mass Transfer 423 431
- Chanfreau Matthieu Joseph Alex Butler Darren Swiatek Richard ‘Advanced Engine Cooling Thermal Management System On A Dual Voltage 42V-14V Minivan’