Abstract:
The objective of this research is to study the performance of a small diesel engine influenced by the use of biodiesel palm blended with ethanol in the ratio1 percent, 3 percent, and 5 percent and to study pollution from small diesel engines influenced by the use of biodiesel palm blended with ethanol by using the YANMAR TF90D-L 1 diesel engine installed with ANAKA-STYLE engine performance tester DYNAMOMETER model P-1.5. The results of the study showed that mixing of biodiesel palm oil and ethanol at the ratio 1% had higher torque and braking power than the biodiesel (B100). However, the higher ratio of ethanol blending reduced the torque and braking power of the engine. The brake-specific fuel consumption was decreased while the thermal efficiency of the engine was increased when mixing ethanol in a greater ratio. For the pollution of the engine, it was found that the amount of nitrogen oxide was increased while the amount of carbon monoxide and the amount of hydrocarbon were reduced when mixing ethanol in a greater ratio.