Performance Testing of Small Diesel Engine Using Coconut Oil and Soybean Oil

Abstract

This research present the using non refined coconut oil and soybean oil in one cylinder diesel engine YANMAR model TA 120-XL. (1) Performance testing of engine with Dynamometer, the result showed that (1.1) Diesel oil: at rotational speed 1,437 rpm found out that maximum torque was 40.17 N⋅m, at velocity 2,163 rpm found out that maximum power was 8.92 kW, at rotational speed 2,056 rpm found out that specific fuel consumption rate was 387.28 g/kW⋅h and at rotational speed 2,163 rpm found out that the maximum fuel consumption rate was 4.13 l/h. (1.2) Coconut oil: at rotational speed 1,400 rpm found out that maximum torque was 38.65 N⋅m, at rotational speed 2,200 rpm found out that maximum power was 8.79 kW, at rotational speed 1,900 rpm found out that specific fuel consumption rate was 485.73 g/kW⋅h, at rotational speed 2,200 rpm found out that the maximum fuel consumption rate was 4.54 l/h. (1.3) Soybean oil: at rotational speed 1,600 rpm found out that maximum torque was 39.08 N⋅m, at rotational speed 2,200 rpm found out that maximum power was 9.0 kW, at rotational speed 1,800 rpm found out that specific fuel consumption rate was 478.09 g/kW⋅h and at rotational speed 2,200 rpm found out that the maximum fuel consumption rate was 4.6 l/h. (2) Testing with power tiller, the engine was installed on the structure of power tiller with (2.1) rubber tire moving at 2 km/h, the result was using diesel oil and soybean oil have the same fuel consumption 0.31 kg/h. Coconut oil was maximum fuel consumption of 0.35 kg/h. (2.2) The engine was installed on the structure of power tiller with cage wheel moving at 2.33 km/h. The result were using diesel oil, soybean oil and coconut oil had fuel consumption was 0.31 kg/h, 0.32 kg/h and 0.35 kg/h, respectively.