Author:
Mohapatra Priyabrata,Mittal Mayank
Abstract
Abstract
In recent years, the permissible limits of engine exhaust emissions are reduced considerably. Hence a quick warm-up and high conversion efficiency of the catalyst system is essential to meet upcoming stringent emission regulations. In the present work, the transient thermal behavior of an oxidation catalyst is studied using a one-dimension mathematical modeling approach with the focus on CO oxidation for dual-fuel engine application. At first, the heat generation due to chemical reactions is considered negligible for studying the warm-up behavior. Upon obtaining a good agreement between predicted warm-up temperature profiles with available literature data, the effect of an electrical heater on the warm-up behavior is investigated. The model is then extended by incorporating heat generation due to CO oxidation. A simplified reaction rate model is considered in order to reduce the computational complexity. It is observed that the simplified model agrees well with the experimental data for both low and high levels of CO concentration at the inlet, typical in dual-fuel technology when an engine is operated under diesel and dual-fuel modes, respectively.
Subject
Modeling and Simulation,General Chemical Engineering
Reference62 articles.
1. Heats of adsorption of the linear CO species on Pt/Al2O3 using infrared spectroscopy: impact of the Pt dispersion;J Catal,2003
2. Modeling the effect of temperature on propylene conversion during warm-up in a monolithic converter;Chem Prod Proc Mod,2008
3. Laminar flow forced convection heat transfer and flow friction straight and curved ducts – A summary of analytic solutions;Technical Report No. 75. Contract No. 225 (91)[NR-090-342] for Office of Naval Research,1971
4. Catalytic converters in a 1d cycle simulation code considering 3d behaviour;SAE Technical Paper No. 2003-01-1002
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