The next few years will be marked by major changes in the mobility sector order to come closer CO2 neutrality. Especially commercial vehicle sector, fuel cells can make an important contribution. In achieve this, efficiency of all subcomponents a has improved. This also includes bearings electrical air compressors. frequent start–stop cycles are critical, as they lead higher wear and thus short...

The development of highly efficient and environmentally friendly machines requires the use new technologies that are created using innovative design solutions materials. This also applies to various types propulsion units, such as gas microturbines or combustion engines. Although these have been known for many years, by components, it is still possible improve their performance. article present...

In this study, rotordynamic analysis is performed using a simple structural model for the polymer layer of gas foil-polymer bearing (GFPB) composed an accumulated bump foil and with high damping. The that considers elastic behavior cylinder-shaped introduced, stiffness estimated based on Hooke’s law differential elements in layer. addition, coupled consideration series relationship, which repre...

Developing high-speed rotating machines, such as microturbines, requires new solutions for bearing systems. Foil bearings are one of the fastest-growing technologies. This article presents results experimental studies on foil conducted a test rig reflecting operating conditions target machine. The tested were therefore placed in chamber filled with low-boiling medium used working fluid vapour m...