Abstract

The objective of determining the emission factor of carbon dioxide (EF-CO₂) from in-use vehicles in Thailand is to gather important data for estimating transport emissions. These data may help develop greenhouse gas management plans for the area. In-use vehicles were tested on a chassis dynamometer by the Bangkok Driving Cycle to quantify CO₂ emissions. The emission factor is defined as the average emission rate for CO₂ per vehicle based on average speed and fuel consumption. The studied vehicle types were the following: heavy duty diesel vehicles (HDDV); light duty diesel vehicles (LDDV); light duty gasoline vehicles (LDGV); and motorcycles (MC) with 4-stroke engines. These vehicles were tested using a variety of fuel types available in Thailand. The study result was found that emissions from the vehicle types were significantly different at the statistic of p-value<0.05. These results can be compared with emission factors of CO₂, including the vehicle types and fuel types from international studies and used in Thailand to promote better efficiency to mitigate greenhouse gas emissions from vehicles.

This work is licensed under a Creative Commons Attribution 4.0 License.