Mathematical modeling of electrically heated monolith converters: model formulation, numerical methods, and experimental verification

Autor:	Se H. Oh, Paul A. Battiston, Edward J. Bissett
Rok vydání:	1993
Předmět:	geography geography.geographical_feature_category Mathematical model Chemistry General Chemical Engineering Numerical analysis Exhaust gas General Chemistry Mechanics Converters Industrial and Manufacturing Engineering Thermal Transient (oscillation) Monolith Test data
Zdroj:	Industrial & Engineering Chemistry Research. 32:1560-1567
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie00020a005
Popis:	It has been widely recognized that a large fraction of CO and HC emissions occurs during the cold-start portion of the Federal Test Procedure (FTP) driving schedule. The previously-developed transient monolith model has been extended to describe the thermal response and conversion performance of an electrically heated monolith converter during warmup. This paper documents the necessary modifications in the model formulation and in the numerical solution methods to accommodate the more severe operating conditions encountered in heated converters. The validity of the heated converter model was tested by comparing model predictions with vehicle emission test data. Model predictions of converter-bed temperatures and converter-out mass emissions agree well with those measured during the cold-start portion of the vehicle emission tests, thus demonstrating the validity of the heated converter model developed here.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::241bdfa5a237fcecac5110144121742d https://doi.org/10.1021/ie00020a005 Zobrazit plný text záznamu