Purpose: The purpose of this study is to analyse the modelling of exhaust gas flow patterns
with variations in pressure, number, and shape of filters on the catalytic converter.
Design/methodology/approach: The research method used is a simulation using
ANSYS, which starts by creating a converter catalytic model with pressure variations:
(0.5-1.5 atm), number of filters: (2-5), and the form of filter-cut/filter-not-cut.
Findings: The decrease in velocity is caused by non-uniform velocity in the exhaust gas
flow that occurs when passing through a bend in the filter-cut that serves as a directional
flow to create turbulence. Filter-cut type tends to have fluctuating pressure, turbulence flow
pattern shape so that contact between filter and exhaust gas is more effective. Based on the
analysis of flow patterns, the speed and pressure of the 5 filter-not-cut design at a pressure
of 0.5 are the best, while at pressure (1-1.5 atm) the type 5 filter-cut is the best.
Research limitations/implications: This study is limited to filter-not-cut and filter-cut
types with variations in the number of filters: 2, 3, 4, and 5, and the inlet pressure between
0.5-1 atm.
Practical implications: The practical implications of this study are to find a catalytic
converter design that has advantages in the effectiveness of exhaust gas absorption.
Originality/value: The results show that the filter-not-cut and filter-cut types have the best
effectiveness in the number of 5 filters. Filter-not-cut at the pressure of 0.5 atm and filter-cut
at pressure (1-1.5 atm).
A new hollow fibre catalytic converter design for sustainable automotive emissions control