Turbocompressor's rotational speed measuring and failure diagnosing device for motor vehicle, has position sensor positioned by using mechanical stop connected on casing or element between flat surface of blade and disc assembly and casing

摘要

The device (1) has a blade and disc assembly (2) integrated to a turbine axle (3) and centered with respect to a rotation axis (AA) of the axle, where the assembly is mounted in a central casing (5). A position signal transmitter is placed between the assembly and a fixed stop (4f), at a distance (D) from the stop, in contact with the central casing. A position sensor (7) is integrated to the casing by using a bore and positioned by using a mechanical stop connected on the casing or an element between a flat surface (21) of the assembly and the casing. An independent claim is also included for a method for measuring rotational speed of a turbo compressor and diagnosing a failure of the turbo compressor.