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Bearing arrangement, method for detecting wear of a bearing surface in a bearing arrangement and use of a bearing arrangement

A bearing device and bearing surface technology, which is used in the detection of bearing surface wear in the bearing device, the device for detection of bearing surface wear, and the application field in turbochargers, can solve problems such as limited application of optical fiber filaments, and avoid The effect of high repair cost, simple structure and cheap structure

Inactive Publication Date: 2013-02-06
WARTSILA FINLAND OY
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  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of such systems include that the properties of the fiber optic filaments limit the applications in which the system can be used

Method used

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  • Bearing arrangement, method for detecting wear of a bearing surface in a bearing arrangement and use of a bearing arrangement
  • Bearing arrangement, method for detecting wear of a bearing surface in a bearing arrangement and use of a bearing arrangement
  • Bearing arrangement, method for detecting wear of a bearing surface in a bearing arrangement and use of a bearing arrangement

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Embodiment Construction

[0018] Some embodiments of the invention will now be described with reference to the accompanying drawings. figure 1 An embodiment of the invention is shown in relation to a thrust bearing. figure 1 The bearing arrangement is designed to allow rotational movement between two parts as well as to carry axial loads. The bearing arrangement can be used, for example, to support the main shaft of a turbocharger of an internal combustion engine, although a bearing arrangement of this type can also be used in many other applications.

[0019] The bearing arrangement comprises a stationary first part 1 , and a second part 2 which is a thrust disc in sliding contact with the first part 1 . The first part 1 has a bearing surface 1 a against which the thrust disc 2 rotates. In many applications it is desirable to arrange lubrication between the first part 1 and the second part 2, but not all cases are necessary. The materials of the first part 1, the bearing surface 1a and the thrust d...

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Abstract

A bearing arrangement comprising a first part (1) having a bearing surface (1a), a second part (2) having a surface being made of an electrically conductive material and being arranged in sliding contact with the bearing surface (1a),and means for detecting wear of the bearing surface. The wear detecting means comprise a sensor (3), which is arranged in the first part (1), made at least partly of an electrically conductive material and comprises a first area (3d) and a second area (3e). The first area (3d) is electrically connected to the surface of the second part (2) so that an open electrical circuit is formed when the bearing surface (1a) is intact, and when the bearing surface (1a) wears down to a certain predefined thickness, the second area (3e) comes into electrical con- tact with the surface of the second part (2) closing the electrical circuit. The wear detecting means further comprise means for detecting closing of the electrical circuit. The invention also concerns a method for detecting wear of a bearing surface and use of a bearing arrangement in a turbocharger for an internal combustion engine.

Description

technical field [0001] The invention relates to a bearing arrangement comprising: a first part having a bearing surface, a second part having a surface made of an electrically conductive material and arranged in sliding contact with the bearing surface of the first part, and means for detecting Means for bearing surface wear, as defined in the preamble of claim 1 . [0002] The invention also relates to a method for detecting wear of a bearing surface in a bearing arrangement as defined in the preamble of claim 10 and to the use of a bearing arrangement as defined in claim 13 in a turbocharger for an internal combustion engine . Background technique [0003] Bearings are common mechanical parts that are used anywhere that parts move relative to each other. The movement is usually rotary or linear, but the movement path can also be different, for example arc-shaped. Different types of bearings are used in different applications, ranging from tiny jewel bearings used in wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04F16C17/24
CPCF16C17/24G01M13/04F16C17/246G01M15/042G01N3/56
Inventor T·诺德曼
Owner WARTSILA FINLAND OY
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