THE EXPERIMENTAL RESEARCH OF THE COMBUSTION ENGINE PISTON PIN STRESS

Abstract

The mechanical loading (stress)that appears in the piston-piston pin-connecting rod system shows special features which are the result of the shape of the parts, the type of acting and the distribution and transmitting of forces from this system. This paper aims to present the piston pin ovalization modality which resulted from the experimental research made on a special test stand for the variant when the piston pin is with tightening(fixed piston pin into the connecting rod foot).The complexity of the phenomenology and the specifically constrains from the reality (which it has been tried to be well presented on the model)show the study opportunity of whole conjugate ensemble, and the phenomena could be observed due to a new testing method of spatial movements based on the three dimensional correlation technology (VIC-3D [4]).