Turbocharger

A technology of turbochargers and turbines, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve problems such as tolerance wear and achieve the effect of reducing wear and minimizing costs

Inactive Publication Date: 2012-04-11
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case of undamped systems, in the current state of the art, especially in applications requiring large flap sizes or in applications operating without external damping for wastegate actuation, mainly when the flap is slightly open, the components Tolerances (chattering, rattling or dynamic impact of the flap against the wastegate seat due to the presence of clearances) lead to wear

Method used

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Examples

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Embodiment Construction

[0016] figure 1 A turbocharger 1 is shown, which includes a compressor 2 and a turbine 3 . The turbine 3 includes a turbine housing 4 and a wastegate arrangement 6 with adjusting flaps 7 . The adjusting flap 7 comprises a flap 7' which is arranged via a lever 5 on an adjusting flap shaft 9 which is guided in the turbine housing 4 via a bush 8.

[0017] as from figure 2 It can be seen that the flap 7' is preloaded against the lever 5 by a spring element 10. In the first embodiment, the spring element 10 is arranged between the flap 7' and the lever 5.

[0018] exist image 3 In the second embodiment, the spring element 10 is arranged between the lever 5 and a disc 11 connected to the flap 7'.

[0019] In both design variants, the connection between the disc 11 and the flap 7' can be a gapless welded or riveted connection. According to the invention, the spring element 10 can have different spring shapes. as in Figure 4 As shown, the spring ele...

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Abstract

The invention relates to a turbocharger (1) in which, for damping the wastegate flap / wastegate lever system, an axially acting spring element is provided in order to reduce wear. The turbocharger (1) comprises a compressor (2) and a turbine (3) which has a turbine housing (4) and a wastegate device (6) with a regulating flap (7). The flap plate (7') of the regulating flap (7) is arranged, via a lever (5), on a regulating flap shaft (9) which is guided in the turbine housing (4) by means of a bush (8). Here, the flap plate (7') is preloaded against the lever (5) by means of a spring element (10).

Description

technical field [0001] The invention relates to a turbocharger according to the preamble of claim 1 . Background technique [0002] A generic turbocharger is known from EP 1 256 703 B1. [0003] In supercharged internal combustion engines using an exhaust-gas turbocharger, the exhaust-gas turbocharger is often equipped with a so-called wastegate arrangement. In the known turbocharger, the wastegate is integrated in the turbine housing and the wastegate comprises a rotatably mounted shaft with a lever, a flap movably tightening with play is secured to the lever, and a flap seat on which the flap is supported. This type of arrangement is often problematic because wear can occur at the wastegate flap / wastegate seat contact point due to vibration of the flap due to exhaust flow and / or wastegate actuation. [0004] In the case of non-damped systems, in the current state of the art, especially in applications requiring large valve sizes or operating without external damping for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/12F02B39/00F16K1/18F16K1/32
CPCF01D17/105F05B2260/96F05D2220/40F05B2220/40Y02T10/144F05D2260/96F02B37/186F02B37/183Y02T10/12F02B37/12F02B39/00F16K1/18F16K1/32
Inventor S·艾伯特
Owner BORGWARNER INC
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