Experimental determination and modelling of the diesel oxidation catalysts ageing effects. (October 2019)

• Record Type: Journal Article
• Authors: Guardiola, Carlos; Pla, Benjamin; Mora Pérez, Javier; Lefebvre, Damien
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 233:Number 12(2019:Dec.)
• Page Start: 3016
• Page End: 3029
• Publication Date: 2019-10
• Subjects: Diesel oxidation catalyst -- diesel engine -- ageing -- model -- emissions -- diagnostics; Mechanical engineering -- Congresses; Transportation engineering -- Congresses; 629.2
• DOI: 10.1177/0954407018814305
• Languages: English
• ISSNs: 0954-4070

Abstract

After-treatment systems are necessary to respect the pollutant emissions thresholds specified by regulations. However, due to system ageing, the efficiency of the after-treatment system may decrease and affect the vehicle emissions during real driving conditions. To address this issue, the model presented in this article is based on the on-engine tests performed to a set of diesel oxidation catalysts with different ageing levels, through which the ageing process is characterized. Then, the model is able to simulate the light-off temperature and slip increase due to ageing, and it is applied to a Worldwide Harmonized Light Vehicles Test Cycle for a new and a thermally aged catalysts.