Affiliation:
1. CMT-Motores Térmicos, Universitat Politècnica de València, Valencia, Spain
2. Groupe PSA, Poissy, France
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.
Subject
Mechanical Engineering,Aerospace Engineering
Cited by
4 articles.
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