Влияние неисправностей в системе смазки на характер повреждения подшипников ДВС

Abstract

The analysis of the condition of the internal combustion engine bearings is carried out for various lubrication system faults, which cause a reduction or even complete stoppage of the oil supply to the bearings of the crankshaft. It is established that the oil supply failure leads to two main types of bearing damage: when only the main bearings are damaged, it can be a complete or almost complete stop of the oil supply, while damage to the connecting rod bearings only occurs when the oil supply decreases. It was found that the difference in the nature of damage to the main and connecting rod bearings is associated not only with the structural difference in the organization of the oil supply, but also with the effect of centrifugal forces from crankshaft rotation to the oil column in the lubricating hole supplying oil to the conrod bearing. The main signs of the types of damage are presented and analyzed, and by dividing these characteristics into the main ones, confirming and specifying, simple recommendations have been developed to determine the causes of engine failure associated with bearing damage.