Developing Reheated Motorcycle Exhaust For PM_2.5 Emission

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, PM_2.5 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 PM_2.5 in the ambient, we have developed a new exhaust used to maximize the released combustion energy for reducing PM_2.5 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 PM_2.5 concentration. The result showed that the exhaust worked well in reducing PM_2.5 concentration with the efficiency reaching up to 24 % depending on the dimension of the net tube.