Estimation of efficiency for aged catalysts

US8783012B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Robert Ukropec · Aachen, DE
• Alexey A. Dubkov · Aachen, DE
• Yasser Mohamed sayed Yacoub · Cologne, DE
• Albert Chigapov · Aachen, DE
• Brendan Patrick Carberry · Aachen, DE

Key dates

• Filing date: Jun 28, 2012
• Grant date: Jul 22, 2014
• Expiry date: Feb 9, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Systems and methods for estimating an efficiency of a catalyst placed in an exhaust path of a combustion engine are disclosed. In one example approach, a method comprises: ageing the catalyst consecutively at different temperatures for definite time periods; measuring the catalyst conversion efficiency after each ageing step; calculating the ageing factor for each step of the ageing procedure and the accumulative value of the ageing factors for all steps of the ageing procedure; estimating catalyst efficiency correlation factors related to the measured catalyst conversion efficiency for each temperature point and for all ageing conditions; determining a correlation between the catalyst efficiency correlation factors and the accumulative value of the ageing factors; and calculating the conversion efficiency of the aged catalyst based on a predetermined correlation between the accumulative ageing factor and the catalyst efficiency correlation factor.