Study on the utilization of essential oil as an additive for pure plant oil in single cylinder diesel engine

Abstract

This paper discusses an effect of rhodinol and turpentine-based bio-additives to improve pure plant oil characteristics. Rhodinol and turpentine were added to PPO at 1% by volume. Testing was conducted on single cylinder diesel engine for agriculture application referring to SNI 0119 : 2012. The results of fuel characteristics show that bio-additive+PPO could fulfill the quality standards of SNI 7431 : 2015. Both rhodinol and turpentine showed capability to reduce water and particle content in PPO. Engine test results showed that at engine speed of 1800 rpm, turpentine+PPO could reach a maximum power of 4.53kW, maximum torque of 24.06 Nm, smoke opacity of 6.87 FSN, and specific fuel consumption of 145.62 g/kWh; while the PPO had maximum power of 4.39 kW, maximum torque of 23.31 Nm, smoke opacity of 7.56 FSN, and specific fuel consumption of 150.12 g/kWh. Here, rhodinol+PPO were also slightly higher on power, torque and lower on smoke emission, and specific fuel consumption compared with PPO without additive. In general, rhodinol and turpentine were slightly higher on engine power and torque with lower specific fuel consumption and lower smoke emission. However, reduction of water and particle content must be further investigated to have better understanding on its effect on engine components lifetime.