The investigation of performance diesel engine was investigated by using Yanmar 1-cylinder diesel engine. Standard
experimental procedures were conducted. The B5 diesel fuel was used and engine fuel consumption, brake fuel consumption,
brake power and torque were compared. Different engine load was set at different engine speed. Increasing engine speed from
1400 RPM to 1700 RPM, will increase fuel consumption, brake power and torque, while reduced brake specific fuel
consumption with every constant load of 2 kW,4 kW and 6 kW. Increasing engine load from 2 kW to 6 kW, will increase fuel
consumption, brake power and torque, while brake specific fuel consumption will reduce with every constant engine speed of
1400 RPM, 1500 RPM, 1600 RPM and 1700 RPM
