The development of automobile technology is going to replace the internal combustion engine powered vehicle to the electrical powered vehicle. Despite of the development trend, the internal combustion powered vehicle had been used in
many ways to help human heavy duty works for example farming activity, construction, industrial and transportations for more than 50 years. Durability, reliaibility high torque output, and high fuel efficiency were the reason why diesel
engine had been choosen to do the works. However, there was a challenge for using diesel engine. The main challenge is the production of emission gases (i.e., Hydrocarbon (HC), Carbon Monoxide (CO), Nitrogen Oxides (NOx), and Particulate Matter (PM) from the combustion of diesel engine. The emission gases can cause respiratory problem and they are also not good for the environment. The usage of After Treatment System, such as Diesel Oxidation Catalyst (DOC) and
Diesel Particulate Filter (DPF, is one of the methods that can be used to reduce the diesel engine emissions. In this study, DOC was used to reduce the HC and CO. Meanwhile, DPF was used to reduce the PM. This experiment was conducted using
the Mitsubishi Fuso 3.0L diesel engine with the usage of DOC and DPF. The fuel that used was the JIS#2 diesel fuel with fixed 200 Nm load. From the result, it is known that the usage of DOC could reduce NO s besides of reducing the CO and
HC. The usage of DPF showed significant results of the PM concentration reduction. The best results were shown when combining DOC and DPF (Cordierite) to optimally reduce CO, HC and NOx. Finally, it is shown that the fuel
consumption was increased when using DOC and DPF. |