The role of machining errors in dynamics of a turbocharger rotor supported on grooved full-floating ring bearings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F20%3A43958240" target="_blank" >RIV/49777513:23520/20:43958240 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

The role of machining errors in dynamics of a turbocharger rotor supported on grooved full-floating ring bearings

Popis výsledku v původním jazyce

Full-floating ring bearings (FFRBs) cause nonlinear vibrations of the turbocharger rotors and are characteristic of high power loss. Both dynamic and tribological properties of FFRB can be improved if several shallow axial grooves are machined in the inner surface of the floating ring. The grooves are usually not manufactured precisely in order to keep production costs as low as possible. This work investigates the role of the machining errors on the dynamics of the turbocharger rotor. More specifically, the effects of the precisely-machined grooves on the dynamics of the system are explained. Then the influence of the uncertainties on both vibrations and hydrodynamic power losses in the bearings is investigated.

Název v anglickém jazyce

The role of machining errors in dynamics of a turbocharger rotor supported on grooved full-floating ring bearings

Popis výsledku anglicky

Full-floating ring bearings (FFRBs) cause nonlinear vibrations of the turbocharger rotors and are characteristic of high power loss. Both dynamic and tribological properties of FFRB can be improved if several shallow axial grooves are machined in the inner surface of the floating ring. The grooves are usually not manufactured precisely in order to keep production costs as low as possible. This work investigates the role of the machining errors on the dynamics of the turbocharger rotor. More specifically, the effects of the precisely-machined grooves on the dynamics of the system are explained. Then the influence of the uncertainties on both vibrations and hydrodynamic power losses in the bearings is investigated.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/LO1506" target="_blank" >LO1506: Podpora udržitelnosti centra NTIS - Nové technologie pro informační společnost</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů