New paper published
Our group new manuscript on the characteristics of the real-driving emissions from gasoline passenger vehicles in the Kuala Lumpur urban environment lead by Nurzawani Md Sofwan published in Atmospheric Pollution Research.
In this study we determined the emission factors of CO, CO2 and NOx w using a fuel-based approach. The 95% confidence intervals obtained for the population mean of emission factors were CO: 0.76 0.15 g/km, CO2: 236.02 14.98 g/km, NOx: 0.23 0.03 g/km. Vehicle age as echoed by accumulated mileage was responsible for the increase in the average emission factors of CO and NOx. The results of the cluster analysis formed four meaningful clusters which described driving conditions and exhaust emissions. Higher observations were recorded for Cluster 1 (43.25%) indicating low vehicle speed and better fuel efficiency produced low NOx and CO emissions but high CO2 emissions. The measurements reported in this paper highlight the significance of this work in quantifying CO, CO2 and NOx emissions from gasoline passenger vehicles under real-world driving conditions of urban street in Malaysia.