Abstract:
This research aims to establish the effects of the length of the
activated carbon-based medium on exhaust gas emission and
evaluate the engine's corresponding performance. The method
utilizes peat soil as the source of activated carbon. The soil is dried
and then passed through a 30-mesh sieve. It is further heated to
400°C for an hour, soaked in a 25-percent H2SO4 solution, and
then maintained at 120°C in an oven. The resulting activated
carbon is then packed into an absorbent tube with a diameter of 30
mm and a varying length of 60 mm, 70 mm, and 80 mm. The tube is
appended to the leaving end of a Honda Supra 125 X's muffler. The
result suggests that the lowest emission is achieved when the tube
length is 80 mm and at 2000 rpm of engine speed, i.e., with CO
level of 2.57 percent and HC of 228 ppm. On the other hand, the
highest emission is given by the tube length of 60 mm, i.e., with an
HC level of 1437 ppm. In conclusion, it shows that the tube length
affects the absorbent ability in reducing emission, but it does not
significantly affect the engine's performance.
