The Study Of Close-Coupled Versus Underfloor Catalyst Emission For Proton Persona 1.6cc

Zairullizam, Muhammad Syamirul Ikhwan (2018) The Study Of Close-Coupled Versus Underfloor Catalyst Emission For Proton Persona 1.6cc. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Time taken to activate catalytic converter of a car has been topic of interest for researcher due to stringent emission regulation.As many years pass through,the time taken for catalytic converter to activate has reduced as the discovery of various technological advancement especially in the era of Industrial Revolution 4.0. One of the technologies that led to improvement of heating on temperature of catalytic converter is by adding a heating element of the exhaust system called ‘Electrically Heated Catalyst’.This technology has been patented and been used on supercar, but not on ordinary vehicle due to cost constraint.This study will involve on the feasibility study of how fast it will heat the catalytic converter, the temperature before and after the installation of electric heated catalyst.The measurement of emission and temperature with or w/out EHC and EHC with air injection system will be recorded and analysed.The expected result would show how efficient this configuration in eliminating the initial time delay for catalyst light off.Based on result obtained,baseline HC emission measurement (without EHC and air injection) for close-coupled catalyst is better than baseline reading for underfloor catalyst,recorded its peak value at 270ppm at first 25 seconds and lowest value is recorded at 12ppm after 450 seconds for HC.While for underfloor catalyst, highest value of HC is recorded at 680ppm during the first 10 seconds and lowest value obtained is 147ppm at 380 seconds operation.For baseline CO emission reading, highest value obtained from close couple catalyst is 4.46% at the first 20 seconds and lowest value of 0.03% at 450 seconds operation.For emission reading with application of EHC and air injection,number of emission is reduced to 141ppm for HC and 6.4% for CO at 130 seconds operation.

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