Abstract:

The friction and wear processes and its results, i.e. clearances in kinematic pairs strongly act to the working processes in reciprocating machines. Specialized methods are developed for the determination of the clearances in joints that influence the mechanical impacts and vibrations, unified in a system model. The method of kinematical analyses of the wear process and clearances in rotating surfaces of piston machines are developed in this article. In parallel, theoretical expressions and diagrams for determination of the dimensionless clearances in kinematic pairs of the machine are deduced. The investigation brings in order to develop an integrated model of the piston machine system that is then used to evaluate and improve current designs.

Keywords: piston machine; dynamics; durability; crank-piston mechanism; tribology; mechanical losses.