METHODOLOGY OF EVALUATION OF THE EFFECTS OF TECHNOLOGICAL TOLERANCES OF ELECTROHYDRAULIC FORWARD TO THE PROCESS OF DIESEL FUEL SUPPLY
The paper presents the methodic and analysis of the influence of technological tolerances on the design and adjusting parameters of the diesel fuel equipment, the determination and analysis of parameters that significantly affect the stability of the fuel supply, as well as the effect of process tolerances on the shape of the injection characteristic. In the case of the nominal operating mode, two main parameters (µf<sub>с</sub> и h<sub>и</sub>) were selected, and in the case of the low load mode, the four main parameters (µf<sub>с</sub>, h<sub>и</sub>, h<sub>кл</sub> и d<sub>их</sub>) having the greatest influence on the cyclic feed rate. The remaining parameters were grouped according to the degree of their influence on the cyclic feeding into three groups. In addition to influencing cyclic feeding, the effect of tolerances on the shape of the injection characteristic for single and double injection was considered. In the case of double injection, considering that the effect of pre-injection has an effect on subsequent injection, the combined effect of wave effects and existing tolerances on the manufacture of EHF parts was considered. As the evaluated parameters, the duration of injection (τ<sub>вп</sub>), the maximum value of the feed rate (dV/dτ) and the time from the moment of the injection start to the maximum delivery rate (τ<sub>m</sub><sub>ах</sub>) were considered.