Experimental determination of the performance of a diesel engine using compressed natural gas under various load conditions

The paper presents the results of bench tests of a four-cylinder diesel engine D-245.12C, in which the indicators of fuel combustion in the engine cylinder and the processes characterizing the heat release in this case were studied. The studies were carried out in a comparative way, since we were interested in how these indicators would change when the engine was converted to a new type of fuel. The entire range of engine load changes is considered - from minimum to maximum, the necessary calculations are carried out, recommendations are given on adjusting and loading modes that allow introducing the proposed type of fuel and the engines running on it into production. Two values of the rotational speed of the crankshaft were taken as the calculated ones: the frequency corresponding to the nominal rotation frequency and the rotation frequency corresponding to the maximum torque mode, 2400 and 1900 rpm, respectively. The results are shown in graphical form and allow you to evaluate the change in the main parameters depending on the change in load.