Geometrical Modelling and Analysis of Automotive Oxidation Catalysis System for Compliance with Environmental Emission Norms

摘要

Diesel engines find application in automotive and industrial areas owing to their higher thermal efficiency and longer life. The exhaust emissions from diesel engines pose a serious threat to environment and human health. Combined use of diesel oxidation catalyst filter (DOC), diesel particulate filter (DPF) and selective catalytic reduction (SCR) is found to reduce the exhaust emissions from the diesel engine. A detailed literature survey has been carried out in this paper to determine the current state of art. It was found that the regeneration of soot trapped in the filter is difficult and also it is reducing the life of the filter. Microwave technology has been proposed for conducting active regeneration of the filter without causing any damage to filter substrate. As an initial phase of the work, three dimensional model of DOC has been developed in SOLIDWORKS software. The flow analysis of the designed model is then carried out by importing the model to ANSYS FLUENT 16.2 as an IGS file. Geometric design of the model is validated by the results of simulation, and pressure drop is found to be in the acceptable range.