Patent ID: 9091276
Filing Date: 2015-07-28
Classification: F02C,F04D,F05D,F16C

Abstract:
1. An exhaust gas turbocharger ( 10 , 10 ′) for an internal combustion engine, the turbocharger ( 10 , 10 ′) comprising a rotor shaft ( 22 ) supported by axially spaced bearings ( 24 , 26 ) arranged in a bearing housing of the turbocharger ( 10 , 10 ′), a speed detection device ( 32 ) and a sleeve element ( 30 , 30 ′, 40 , 40 ′, 40 ″) extending closely around the rotor shaft ( 22 ) radially between the rotor shaft ( 22 ) and the bearing housing and axially between the spaced bearings ( 24 , 26 ) for axially fixing the bearings ( 24 , 26 ) of the rotor shaft ( 22 ) of the turbocharger ( 10 , 10 ′), the sleeve element ( 30 , 30 ′, 40 , 40 ′, 40 ″) having a radial through-opening ( 48 , 48 ′, 48 ″) in its circumferential surface ( 46 , 46 ′, 46 ″) through which the speed detection device ( 32 ) extends, the through-opening ( 48 , 48 ′, 48 ″) having inclined walls forming an inwardly narrowing funnel extending in the radial direction through the sleeve element ( 30 , 30 ′, 40 , 40 ′, 40 ″), wherein the radial through-opening ( 48 , 48 ′, 48 ″) is elongated in the axial direction of the sleeve element ( 30 , 30 ′, 40 , 40 ′, 40 ″) and widens circumferentially toward one end section thereof to facilitate insertion of the speed detection device ( 32 ) through the bearing housing surrounding the sleeve element ( 30 , 30 ′, 10 , 40 ′, 40 ″) through the housing into the through-opening in the sleeve element.