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Supercharger

A supercharger, bearing bushing technology, applied in the field of exhaust gas turbocharger, can solve the problems of negative impact, blockage wear, high wear, etc.

Active Publication Date: 2018-06-29
BOSCH MAHLE TURBO SYST GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the aforementioned elongated hole has the disadvantage that the elongated hole leads to a point contact between the cylindrical pin and the bearing bush, whereby higher wear occurs in the area of ​​the point contact, which has a negative effect on the associated play
Furthermore, the combination of cylindrical pins and associated elongated holes can lead to clogging and / or greater wear during adjustment or during operation

Method used

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Embodiment Construction

[0025] according to Figure 1 to Figure 4 with Figure 8 , the supercharger 1 according to the invention, which can be designed, for example, as an exhaust gas turbocharger 2 for a motor vehicle engine 3 , comprises a bearing arrangement 4 for mounting a shaft 5 . Here, the shaft 5 carries a compressor wheel 6 and a turbine wheel 7 and is mounted via a bearing bush 8 in a bearing housing 9 of the supercharger 1 . Here, the bearing bush 8 is mounted floatingly in a tightly defined manner in the hub of the bearing housing 9 , just as the shaft 5 is mounted floatingly in a tightly defined manner in the bearing sleeve 8 . The stable positioning of the bearing bush 8 in this case is achieved by a pin 10 which engages in the bearing bush 8 radially from the hub. Here, the pin 10 comprises a first part 11 which is rotatably mounted in the bearing housing 9 and engages in a recess 13 (see also in particular Figure 5 with 8 ) in the second part 12, wherein the axis 14 of the first...

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Abstract

The invention relates to a supercharger (1) equipped with a bearing (4). The bearing (4) allows a shaft (5) to be mounted in the bearing housing (9) via a bearing bush (8), wherein the bearing bush (8) may be securely positioned by a pin (10) that engages into the bearing bush (8) radially from a hub. It is important for the invention that the pin (10) includes a first part (11) rotatably mountedin the bearing housing (9) and a second part (12) engaging in a recess (13) of the bearing bush (8). An axis (14) of the first part (11) and an axis (15) of the second part (12) may run parallel to one another. The bearing bush (8) and the pin (10) may be connected via a ball joint connection (16).

Description

technical field [0001] The invention relates to a supercharger, in particular an exhaust gas turbocharger for a motor vehicle engine according to the preamble of claim 1 . Background technique [0002] In general, the axial clearance between the compressor blades and the compressor casing has a major effect on compressor efficiency, in fact, the smaller the clearance, the greater the compressor efficiency. On the other hand, larger clearances can dampen or reduce compressor pumping during sudden load changes when the supercharger, such as an exhaust gas turbocharger, is operating near the pumping limit. In this case, the axial compressor clearance is caused by the following component tolerances: the axial position of the compressor housing, the bearing housing, the rotor carrying the compressor wheel and the turbine wheel relative to the axial bearing. In order to be able to achieve the highest possible compressor efficiency in this case, it is therefore desirable to set th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/06
CPCF02C7/06F01D25/16F01D25/18F16C17/02F16C23/043F16C33/08F16C2360/24F05D2220/40F16C19/184F02C6/12F01D25/162F16C23/10F16C17/10F04D29/052
Inventor 马哈尔·克卢萨切克吕迪格·克莱因施密特
Owner BOSCH MAHLE TURBO SYST GMBH & CO KG
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