Abstract
Abstract
A single-cylinder four-stroke Ruggerini diesel engine "Robin EY-20 D" was certified through the implementation of a number of experiments to validate its proper functioning by means of developing Horsepower (HP) vs. Engine speed (rpm) and Torque (M) vs. Engine speed (rpm) curves. Frequently, the actual values of Horsepower and Torque developed during operation of an engine differ significantly from the values specified by the manufacturer. This study measures the values of Horsepower and Torque followed by a specific experimental procedure provided by the engine manufacturer and compares the maximum findings to the values that the manufacturer provides, in order to determine the percent difference between them. An electric generator was used as a charge indicator in order to develop the Horsepower vs. Engine speed and Torque vs. Engine speed curves. The gradual increase or decrease of generator current was directly related to Horsepower and Torque of the engine. The maximum Torque was found to be 3.20 Kpm corresponding to 2400 rpm, and the maximum Horsepower was found to be 8.95 kW, corresponding to 3000 rpm. Results showed that this method confirmed that the manufacturer specifications were valid based on the small percent difference between them and the actual values.
Keywords: diesel engine, engine speed, horsepower, torque