Estimation of Hydrothermal Aging of SCR Catalysts for Heavy-Duty Vehicles Using Connected Data

Abstract

In order to estimate the hydrothermal aging of SCR catalysts for heavy-duty vehicles used in real driving conditions, we quantified SCR hydrothermal aging of user vehicles by using connected data and a previously reported hydrothermal aging simulation model. In addition, we collected SCR catalysts from four user vehicles, and evaluated their NOx purification performance. From these evaluations, it was estimated that the hydrothermal aging degree of SCR catalysts installed in the user vehicles were much lower than that of the reference sample for aging.