According to the data [2], the sample was chosen for the training of ANN, consisting of the distribution of chemical elements for groups of controlled parts of diesel [??]49 (CB--cylinder bushing, PP-- piston pin, ARKP--articulated rod
knuckle pin, PH--piston head, CR--compression rings, OSR--oil scrapper rings, CN--crankshaft neck, RD--rod journal, CBL--crankshaft bearing liner, CRL--connecting rod liner, PS--piston skirt, BBPI --bronze bearings of piston insert, BBACR--bronze bearings of articulated connecting rod).