Title: Analytical model of diesel engines exhaust NOx emission rate

Authors: Waleed F. Faris; Hesham A. Rakha; Salah A.M. Elmoselhy

Addresses: Department of Mechanical Engineering, International Islamic University Malaysia, Gombak, Kuala Lumpur, 53100 Malaysia ' Virginia Tech Transportation Institute, Virginia Polytechnic Institute and State University, 3500 Transportation Research Plaza, Blacksburg, VA 24061, USA ' Department of Mechanical Engineering, International Islamic University Malaysia, Gombak, Kuala Lumpur, 53100 Malaysia

Abstract: Although vehicle analytical models are favourable in many cases, due to describing the physical phenomena associated with vehicle operation comprehensively based on the principles of physics with explainable mathematical trends and with extendable modelling to other vehicle types, no analytical model has been developed as yet of diesel exhaust NOx emission rate. The present paper demonstrates an analytical model of the steady speed diesel exhaust NOx emission rate. The study shows with 99.5% coefficient of determination that the average percentage of deviation of the steady speed-based simulated results from the corresponding field data is 3.7% and 6.4% for all low speed freeway cycles and for all high speed freeway cycles, respectively. The simulated results outperform their counterparts of widely recognised models, such as the CMEM.

Keywords: diesel engines; analytical modelling; exhaust emissions; intelligent transport systems; ITS; environmental sciences; vehicle emissions; emission rate; vehicle modelling; simulation.

DOI: 10.1504/IJVSMT.2014.066511

International Journal of Vehicle Systems Modelling and Testing, 2014 Vol.9 No.3/4, pp.264 - 280

Published online: 30 Dec 2014 *

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