Improving the efficiency of dual fuel feed in the engine by reducing fuel-air mixture losses
The article studies the total fuel losses in the implementation of a double feed on the basis of a single-cylinder diesel unit of dimension 130/140, the effect of the volume of the preliminary portion of fuel on the main indicators of the working process, and, first of all, on the composition of harmful emissions. Measures are proposed to minimize fuel losses and analyze the dependence of the average pressure of mechanical losses on the value of the pre-feed obtained by the "scrolling" method, its optimum range is determined. An estimate is given of the probability of a decrease in the efficiency of the cycle due to the suppression of the rate of heat evolution in the initial phase of combustion near the top dead center, on the other hand, this leads to optimization of the maximum pressure and combustion temperature.