DEPENDENCE OF THE SELECTED PROPERTIES OF THE MOTOR OIL ON THE CHARACTERISTICS ON POWER CONSUMPTION FOR ENGINES SUPPLIED WITH BIOGAS AND GAS

The results of the studies on the influence of the type of fuel - of natural gas and of biogas - and the manner of the motors' loading with spark ignition on the selected properties of the motor oil, are described in the study. In the first group the fuel was the biogas and in the second - the natural gas. The motors were subject to loads of constant and variable value. It was found, that the uniform loading of the combustion motor to a lesser degree causes degradation of the lubricating properties of a motor oil than in case of often loading's changes. A similar reaction was observed both for the motors supplied with biogas as well as with the natural gas.