Investigation on transforming of a fixed gas analyser into a Portable Emission Measurement System (PEMS)

Choe Sathit1*, Seyed Amirmostafa Jourabchi1*, Hoon Kiat Ng2, Suyin Gan2

1Faculty of Engineering and Quantity Surverying, INTI International University, Jalan BBN, Bandar Baru Nilai, 71800 Nilai, Negeri Sembilan, Malaysia
2Faculty of Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor, Malaysia

Corresponding author:,

Abstract:Recently Portable Emission Measurement System (PEMS) is being used to show the real emission components of diesel engines (and petrol engines) instead of using test cycles because of their more realistic measurements. Their drawback is their high price and unavailability. This study investigates the possibility of transforming a fixed gas analyser that cost approximately RM50,000 into a PEMS. The project was done through the simulation of a program coded using Python to imitate the functions of a PEMS as close as possible. In the code, it is programmed to calculate emission from a diesel-based vehicle, based on the changes of the Torque and RPM. Simulation of the code uses data from a research paper reviewed. The difference of the project simulation and the research paper data is 6.32%.  It is concluded there is a possibility as the code was able to be validated.

KeywordsVehicle gas emissions, air pollution,