Abstract
In this research, palm oil was used in a medium speed marine diesel engine as an alternative fuel. The combustion characteristics and the exhaust emissions were investigated by test bench experiments. Results show that: palm oil is suitable for the marine diesel engine, and is effective for CO2 reduction. Compared with the engine fueled with marine diesel oil and gas oil, the engine fueled with palm oil exhausts slightly higher NOx emissions but lower smoke, CO and THC emissions at high engine loads. On the other hand, it exhausts lower NOx emissions but higher smoke, CO and THC emissions at low engine loads.
