The laws that govern the durability of crankshaft-piston assembly friction nodes can be proved or at least derived or justified in an intuitive way. Operation of all the friction nodes is disturbed by external factors occurring with randomly changing intensity and also appearing at random. As the crankshaft-piston assembly friction nodes have a series structure and effects of those disturbances accumulate, their fitness for use...

The paper presents a failure model of main elements of the crankshaft-piston assembly, based on failures ofcrankshaft-piston assembly and timing gear system of the Sulzer RD engines, retrieved from the equipment reliabilitydata of selected ships.

Przedstawiono propozycję wartościowania (ilościowego określenia) działania dowolnego układu korbowo-tłokowego silnika o zapłonie samoczynnym, w którym zachodzą oddziaływania energetyczne w określonym czasie. Działanie to rozumiane jest jako przekazywanie odbiornikowi energii w ustalonym czasie, w którym zachodzi przetwarzanie i przenoszenie energii w formie pracy i ciepła. Wartościowanie działania układów korbowo-tłokowych silników...

The paper presents a topological model allowing to determine the probability of aptitude of the diagnosing system (SDG) individual measuring circuits and also to determine to what degree they influence the assessment of the technical condition of an arbitrary main subassembly of crankshaft-piston assemblies as a diagnosed system (SDN).

The ar ticle analyses the operation of reciprocal internal combu stion engines, with mar ine engines u sed a s an example. The analysis takes into account types of energy conversion in the work spaces (cylinders) of these engines, loads of their crankshaft-piston assemblies, and types of fuel combustion which can take place in these spaces during engine operation. It is highlighted that the analysed time-dependent loads of marine...