Article: Control of NOx emissions from diesel engines by the optimisation of fuel injection strategies Journal: International Journal of Vehicle Design (IJVD) 2007 Vol.45 No.1/2 pp.47 - 60 Abstract: A multidimensional modelling approach using the KIVA3v algorithm has been applied to investigate the effects of fuel injection strategies on engine performance, NOx and soot emissions. Results were compared with experimental data obtained for a Ford Ecotorq NHDD diesel engine with a common-rail fuel system. After the verification of the developed model for different operating conditions of various load and engine speed, different split injection schemes with multiple pulses per cycle were considered. Results show that timing and duration of injection pulses and mass ratio of fuel injected have the major influence. NOx emissions can be reduced with a two-stage combustion resulting from early preinjection and late main injection with almost equal amounts of fuel mass fraction. Fuel mass fraction values of less than 20% in preinjection do not result in noticeable improvement. Inderscience Publishers - linking academia, business and industry through research

Title: Control of NO_x emissions from diesel engines by the optimisation of fuel injection strategies

Authors: Cem Sorusbay, Abdurrahman Imren, Metin Ergeneman, Dogan San, Ergun Gurarslan

Addresses: Division of Automotive Engineering, Faculty of Mechanical Engineering, Istanbul Technical University, Gumussuyu, Istanbul 34437, Turkey. ' Division of Automotive Engineering, Faculty of Mechanical Engineering, Istanbul Technical University, Gumussuyu, Istanbul 34437, Turkey. ' Division of Automotive Engineering, Faculty of Mechanical Engineering, Istanbul Technical University, Gumussuyu, Istanbul 34437, Turkey. ' Ford Otomotiv A.S., Department of Research and Development, Izmit Golcuk Yolu, Ihsaniye 41670, Golcuk, Kocaeli, Turkey. ' Ford Otomotiv A.S., Department of Research and Development, Izmit Golcuk Yolu, Ihsaniye 41670, Golcuk, Kocaeli, Turkey

Abstract: A multidimensional modelling approach using the KIVA3v algorithm has been applied to investigate the effects of fuel injection strategies on engine performance, NO_x and soot emissions. Results were compared with experimental data obtained for a Ford Ecotorq NHDD diesel engine with a common-rail fuel system. After the verification of the developed model for different operating conditions of various load and engine speed, different split injection schemes with multiple pulses per cycle were considered. Results show that timing and duration of injection pulses and mass ratio of fuel injected have the major influence. NO_x emissions can be reduced with a two-stage combustion resulting from early preinjection and late main injection with almost equal amounts of fuel mass fraction. Fuel mass fraction values of less than 20% in preinjection do not result in noticeable improvement.

Keywords: split injection; vehicle design; fuel injection; NO_x emissions; soot emissions; diesel combustion; engine performance.

DOI: 10.1504/IJVD.2007.013670

International Journal of Vehicle Design, 2007 Vol.45 No.1/2, pp.47 - 60

Published online: 11 May 2007 *

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Title: Control of NOx emissions from diesel engines by the optimisation of fuel injection strategies

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Title: Control of NO_x emissions from diesel engines by the optimisation of fuel injection strategies