Abrégé

The invention relates to an impeller for a turbocharger. The impeller (1) is mounted in a housing of the turbocharger (3) in a rotatable manner about an axis of rotation, wherein the impeller (1) and has an impeller hub (5) comprising an impeller back (6) and an impeller front facing away from the impeller back (6), and a plurality of impeller blades (4) are formed on the impeller hub (5) so as to extend between the impeller back (6) and the impeller front. A balancing mark (11) is arranged in a blade channel (9) formed between a first blade (7) of the plurality of impeller blades (4) and a second blade (8) of the plurality of impeller blades (4), said second blade being arranged adjacently to the first blade (7). According to the invention, the balancing mark (12) is triangular-like. The invention additionally relates to a turbocharger comprising such an impeller and to a method for balancing a rotor assembly for such a turbocharger.

Classes IPC  ?

• F04D 29/66 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analoguesÉquilibrage
• F01D 5/02 - Organes de support des aubes, p. ex. rotors
• F01D 5/04 - Organes de support des aubes, p. ex. rotors pour "machines" ou machines à flux radial
• F02C 6/12 - Turbocompresseurs de suralimentation, c.-à-d. ensembles fonctionnels destinés à augmenter la sortie de puissance mécanique des moteurs à piston à combustion interne en augmentant la pression de suralimentation
• G01M 1/34 - Compensation du balourd par soustraction de matière de l'objet à tester, p. ex. de la surface de roulement de pneus

Abrégé

The invention relates to a bearing device for an exhaust gas turbocharger, having a first radial bearing (13) and a second radial bearing (14), wherein the radial bearings (13, 14) are configured for radially mounting a shaft (8) of the exhaust gas turbocharger (2) with a rotational axis (11), and wherein a first outflow gap (18) and a second outflow gap (23), respectively, are configured between the first radial bearing (13) and a first supporting wall (17) of the exhaust gas turbocharger (2) for axially supporting the first radial bearing (13), which first supporting wall (17) extends radially and is configured so as to face a turbine wheel (7) of the exhaust gas turbocharger (2), and between the second radial bearing (14) and a second supporting wall (22) of the exhaust gas turbocharger (2) for axially supporting the second radial bearing (14), which second supporting wall (22) extends radially and is configured so as to face a compressor impeller (6) of the exhaust gas turbocharger (2). According to the invention, for axial and simultaneous radial bearing and/or for supporting the radial bearing, the first outflow gap (18) and/or the second outflow gap (23) are/is configured so as to be inclined or curved with respect to the rotational axis (11) at least partially with the configuration of an angle (α) which is greater than or less than 90°.

Classes IPC  ?

• F01D 25/16 - Aménagement des paliersSupport ou montage des paliers dans les stators
• F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
• F16C 17/10 - Paliers à contact lisse pour mouvement de rotation exclusivement à la fois pour charges radiales et axiales
• F16C 17/18 - Paliers à contact lisse pour mouvement de rotation exclusivement caractérisés par des particularités sans rapport avec la direction de la charge avec coussinets ou bagues flottants, tournant à vitesse réduite
• F16C 33/10 - Structures relatives à la lubrification

Abrégé

The invention relates to an impeller for a turbocharger. The impeller (1) is mounted in a housing of the turbocharger (3) in a rotatable manner about a rotational axis (4) and has an impeller hub (6) with an impeller back (7) and an empeller front facing away from the impeller back (7), and a plurality of impeller blades (5) are formed on the impeller hub (6) so as to extend between the impeller back (7) and the impeller front. A balancing mark (12) is arranged in a blade channel (10) formed between a first blade (8) of the plurality of impeller blades (5) and a second blade (9) of the plurality of impeller blades (5), said second blade being arranged adjacently to the first blade (8). According to the invention, the width (B) of the balancing mark (12) is smaller than the length (L) of the balancing mark (12). The invention additionally relates to a turbocharger comprising such an impeller and to a method for balancing a rotor assembly for such a turbocharger.

Classes IPC  ?

• F01D 5/02 - Organes de support des aubes, p. ex. rotors
• F04D 29/66 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analoguesÉquilibrage
• G01M 1/34 - Compensation du balourd par soustraction de matière de l'objet à tester, p. ex. de la surface de roulement de pneus