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Effects of Cetane Number on Emissions From a Prototype 1998 Heavy-Duty Diesel Engine
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Abstract
As stringent emission regulations further constrain engine manufacturers by tightening both NOx and particulate emission limits, a knowledge of fuel effects becomes more important than ever. Among the fuel properties that affect heavy-duty diesel engine emissions, cetane number can be very important. Part of the CRC-APRAC VE-10 Project was developed to quantify the effects of cetane number on NOx and other emissions from a prototype 1998 Detroit Diesel Series 60. Three fuels with different natural cetane number (41, 45, 52) were treated with several levels and types of cetane improvers to study a range of cetane number from 40 to 60. Statistical analysis was used to define how regulated emissions from this prototype 1998 engine decreased with chemically-induced cetane number increase. Variation of HC, CO, NOx, and PM were modeled using a combination of a fuel's naturally-occurring cetane number and its total cetane number obtained with cetane improver. Increasing cetane number decreased all regulated emissions.
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Ullman, T., Spreen, K., and Mason, R., "Effects of Cetane Number on Emissions From a Prototype 1998 Heavy-Duty Diesel Engine," SAE Technical Paper 950251, 1995, https://doi.org/10.4271/950251.Also In
References
- Ullman, T.L. “Investigation of the Effects of Fuel Composition and Injection and Combustion System Type on Heavy-Duty Diesel Exhaust Emissions,” Final Report Coordinating Research Council March 1989
- Ullman, T.L. Mason, R. L. Montalvo, D. A. “Study of Fuel Cetane Number and Aromatic Content Effects on Regulated Emissions from a Heavy-Duty Diesel Engine,” Final Report Coordinating Research Council September 1990
- Ullman, T.L. Spreen, K.B. Mason, R.L. “Effects of Cetane Number, Cetane Improver, Aromatics, and Oxygenates on 1994 Heavy-Duty Diesel Engine Emissions,” SAE Paper 941020 International Congress & Exposition Detroit, Michigan February 28 March 3 1994
- Spreen, K.B. Ullman, T.L. Mason, R.L. “Effects of Cetane Number, Aromatics, and Oxygenates on Emissions from a 1994 Heavy-Duty Diesel Engine with Exhaust Catalyst,” SAE Paper 950250 International Congress & Exposition Detroit, Michigan February 27 March 2 1995