Investigation of Weight Effects on the Critical Speed of Inclined Turbocharger Rotor System

Abstract Turbochargers have been widely used in various base conditions, such as horizontal, vertical, or inclined. The prediction of the dynamics is utmost importance to inclined turbocharger designers. In this paper, effect weight on critical speed an rotor coupled with floating ring bearings investigated. modeled by lumped mass model. nonlinear bearing model derived using Capone’s Then dynamic system obtained. balance position obtained solving static equation. Linear based position, and eigenvalue problem. Three vibration modes, i.e. conical whirl, cylindrical bending are Increasing angle would decrease speed. Among three whirl furnishes highest while attains lowest decrease. vertical has a more wide operating range than horizontal rotor.