DEVELOPING REHEATED MOTORCYCLE EXHAUST FOR PM2.5 EMISSION

Abstract

Motor engine has been identified to produce particulate emission in different size distribution
and has serious impacts on health and influence of air quality. Especially, PM2.5 which are known as
particulate matters with the diameter less than 2.5 µm, induce a major health problem due to the reactive
characteristic and the high exposure level in the human. In order to reduce the concentration of PM2.5 in the
ambient, we have developed a new exhaust used to maximize the released combustion energy for reducing
PM2.5 concentration. The exhaust was accomplished with a heating chamber and a copper net tube in the
dimension of 25 cm in diameter and the varied length of 4 cm, 5 cm, and 6 cm. The tube was wired by copper
with the diameter of 0.5 cm. The exhaust was characterized by measuring temperature and the capability in
reducing PM2.5 concentration. The result showed that the exhaust worked well in reducing PM2.5
concentration with the efficiency reaching up to 24 % depending on the dimension of the net tube.