| Author | Lalita Rammont |
| Call Number | AIT Thesis no.EV-99-8 |
| Subject(s) | Automobiles--Motors--Exhaust gas
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of
Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The most number of cars is in Bangkok. Out of all the vehicles registered in Bangkok
Metropolis, cars take approximately 40 percent. Cars also produce the most amount of
pollution to roadside ambient air, which is worsened by vehicle exhaust emission.
This study measures the traffic volume on Lad Phrao and Din Daeng Roads and is
compared with roadside air quality from a fixed ambient air monitoring station of Pollution
Control Department (PCD), which settles on the same road. The relation of traffic volume and
air quality is not directly related to high traffic volume, causes high pollution. However, these
are related to the traffic congestion condition, speed, meteorological condition and
surrounding area. The exhaust emission from cars with a catalytic converter and without a
catalytic converter were measured while performed on a chassis dynamometer using a
Bangkok driving cycle and at idle condition. The concentration of exhaust emission at idle
condition from non-catalytic converter cars is higher than with catalytic converter cars.
Exhaust emission measurement from CVS system shows that all pollutants from non-catalytic
converter cars are higher than cars with catalytic converter, except C02 emission. The reasons
are the deterioration of the engine and the function of the catalytic converter. The information
of traffic volume and exhaust emission was used to estimate CO concentration by street
canyon model. Concerned about cars, the factors that can help to improve air quality are
reducing the exhaust emission concentration, installing the catalytic converter and changing
the number of cars and motorcycles. |
| Year | 1999 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Samom Muttamara; |
| Examination Committee(s) | Nguyen Thi Kim Oanh ;Supat Wangwongwatana ; |
| Scholarship Donor(s) | Asian Institute of Technology (Partial Scholarship); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1999 |