Abstract:
The objectives of this research were to study the performance and emissions of dual fuel DME-Diesel and DME-Biodiesel on a four-stroke single cylinder diesel engine compared with using diesel and palm biodiesel. For this research, a four-stroke single cylinder diesel engine Yanmar TF90 DI-L was modified to the dual fuel engine which connected to the P-1.5 ANAKA STYLE DYNAMOMETER engine dynamometer and the exhaust gas analyzer for engine performance and emission test. The engine test was conducted through 2500 rpm to 1200 rpm at full load condition and the flow rate of DME was set at constant 5 liter/min at pressure of 1 bar for supplying into the dual fuel engine for both DME-Diesel and DME-Biodiesel engines. The engine performance such as engine torque, engine power, break specific fuel consumption and thermal efficiency of the engine and the emissions of the engine such as Nitrogen Oxide (NOx), Carbon Monoxide (CO) and Hydrocarbon (HC) were investigated during the test.
The result revealed that the both DME-Diesel and DME-Biodiesel dual fuel engines had maximum engine power and thermal efficiency of the engine higher than diesel. However the maximum torque and break specific consumption were lower than diesel. For the emissions, the DME-Diesel and DME-Biodiesel dual fuel engines emitted Nitrogen Oxide (NOx), Carbon Monoxide (CO) and Hydrocarbon (HC) higher than diesel and palm biodiesel.