Development of a Numerical Model to Predict the Impact of Phosphorus on Flow through Aftertreatment Components Caterpillar Incorporated

Format:

Conference/Event

Author/Creator:

Chavannavar, Chavannavar, author.

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

A predictive numerical model was developed to determine theimpact of phosphorus exposure on the performance of flow throughaftertreatment components such as Diesel Oxidation Catalysts (DOC)or Selective Catalytic Reduction (SCR) catalysts. The model is ableto successfully determine the distribution of the phosphorus overthe catalyst as a function of the aging history (temperature, flowrates, oil consumption rate, phosphorus content of the oil) as wellas the component properties (diameter, length, cell density, wallthickness).The model then incorporates this information regarding thedistribution of phosphorus over the catalyst surface to determinethe impact of the phosphorus exposure on the overall catalyticactivity. The model results were successfully validated usingaccelerated bench aging tests for the oxidation of hydrocarbonsover DOC's and NH₃ oxidation and NOx reduction over SCRcatalysts.The modeling approach and methodology should, however, bereadily extendable to wall flow aftertreatment components such asDiesel Particulate Filters (DPF) as well as other flow throughcomponents such as Lean NOx Traps (LNT's) that were notincluded in this study

Notes:

Vendor supplied data

Publisher Number:

2012-01-1299

Access Restriction:

Restricted for use by site license