Turbocharger axial force testing system

Abstract

The turbocharger axial force testing system comprises a turbocharger to be detected, the turbocharger is provided with an intermediate body, the intermediate body is internally provided with a rotating shaft, and the two ends of the rotating shaft are provided with a turbine assembly and a gas compressor assembly respectively; an oil inlet hole is formed in a middle body of the turbocharger, a floating bearing is arranged on the rotating shaft, and an oil port in the floating bearing is aligned with the oil inlet hole; the axial force sensor is inserted into the oil inlet hole, the axial force sensor can generate a signal when bearing axial force, and the signal is transmitted to strain force data acquisition equipment. According to the turbocharger axial force testing system, the axial force sensor inserted into the oil inlet hole is innovatively adopted for detection, detection can be carried out when the turbocharger works, axial force data are transmitted to the strain force data acquisition equipment, whether the design of the turbocharger is reasonable or not is judged, and the turbocharger axial force testing system is very convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of turbocharger testing technology, specifically relating to a turbocharger axial force testing system. Background Technology

[0002] A turbocharger is a device that uses engine exhaust gases to drive a turbine, thereby increasing the engine's intake air volume and output power. With the development of the automotive industry, turbochargers have played a crucial role in improving engine efficiency, reducing fuel consumption, and decreasing emissions, and are widely used.

[0003] The axial force of a turbocharger is a key technical parameter in turbocharger shaft system design. If the axial force is too large, exceeding the thrust capacity of the turbocharger shaft system, the turbocharger may be damaged by friction against the casing. However, in traditional turbocharger shaft system design, the axial force is calculated using the pressure at the pressure end inlet, the pressure at the turbine end outlet, the compressor inlet pressure, and the compressor outlet pressure. This method is not very intuitive and cannot effectively assess whether the turbocharger shaft system design is reasonable.

[0004] Therefore, in order to better design the turbocharger shaft system, this application designed an axial force testing system that can intuitively measure the magnitude of the axial force of the turbocharger throughout the entire operating speed range. Utility Model Content

[0005] To address the shortcomings of the existing technology, this invention provides a turbocharger axial force testing system. By inserting an axial force sensor into the turbocharger's oil inlet, the axial force data of the turbocharger can be obtained in real time. This axial force data can effectively evaluate whether the turbocharger shaft system design is reasonable.

[0006] The present invention is solved by the following technical solution.

[0007] A turbocharger axial force testing system includes: a turbocharger to be tested, wherein the turbocharger has an intermediate body, a rotating shaft is provided in the intermediate body, and a turbine assembly and a compressor assembly are respectively provided at both ends of the rotating shaft; an oil inlet is provided on the intermediate body of the turbocharger, and a floating bearing is provided on the rotating shaft, with the oil port on the floating bearing aligned with the oil inlet; and an axial force sensor inserted into the oil inlet, wherein the axial force sensor can generate a signal when subjected to axial force, and the signal is transmitted to a strain force data acquisition device.

[0008] The turbocharger axial force testing system in this application innovatively uses an axial force sensor inserted into the oil inlet for detection. It can detect the axial force even when the turbocharger is working and transmit the axial force data to a strain data acquisition device to determine whether the turbocharger design is reasonable, which is very convenient.

[0009] In a preferred embodiment, the signal generated by the axial force sensor is transmitted to the strain data acquisition device via a sensor cable. This wired signal transmission method provides high accuracy and strong anti-interference capability.

[0010] In a preferred embodiment, the axial force sensor includes a sensor spindle and an outer end portion disposed at the outer end of the sensor spindle. The outer end portion abuts against the outer end face of the oil inlet hole, ensuring high stability after assembly.

[0011] In a preferred embodiment, the first end of the sensor spindle is engaged at the opening of the oil inlet, and the second end of the sensor spindle is engaged in the oil port on the floating bearing. The two ends are separated by a certain distance, which allows the sensor to sense changes in axial force between the two ends and generate corresponding axial force signals.

[0012] In a preferred embodiment, there is an inwardly recessed portion between the first end and the second end. The outer wall of the inwardly recessed portion does not contact the inner wall of the oil inlet hole, so that the sensor spindle has a certain degree of bendability and can well adapt to the deformation caused by the axial force deviation between the inner and outer ends.

[0013] In a preferred embodiment, the axial force sensor has a central hole in which a strain detection unit is provided, which can sense bending deformation and generate a corresponding signal.

[0014] In a preferred embodiment, the turbocharger to be tested is placed on a workbench that allows the turbocharger to simulate actual operating conditions.

[0015] Compared with the prior art, the present invention has the following advantages: it provides a turbocharger axial force testing system, which can obtain the axial force data of the turbocharger in real time by inserting an axial force sensor into the oil inlet of the turbocharger. The axial force data can effectively evaluate whether the design of the turbocharger shaft system is reasonable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the turbocharger axial force testing system of this utility model.

[0017] Figure 2 for Figure 1 An enlarged view of the axial force sensor structure placed at the oil inlet. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] See Figures 1 to 2 This utility model relates to a turbocharger axial force testing system, comprising: a turbocharger to be tested, wherein the turbocharger has an intermediate body 1, and a rotating shaft 4 is provided in the intermediate body 1, wherein a turbine assembly 2 and a compressor assembly 3 are respectively provided at both ends of the rotating shaft 4; an oil inlet is provided on the intermediate body 1 of the turbocharger, and a floating bearing 5 is provided on the rotating shaft 4, wherein the oil port on the floating bearing 5 is aligned with the oil inlet; and further comprising an axial force sensor 6 inserted into the oil inlet, wherein the axial force sensor 6 can generate a signal when subjected to axial force, and the signal is transmitted to a strain force data acquisition device 8.

[0022] Specifically, in this application, the signal generated by the axial force sensor 6 is transmitted to the strain data acquisition device 8 via the sensor cable 7, which is a wired signal transmission method with high accuracy and strong anti-interference capability.

[0023] In addition, from the appendix Figure 2As can be seen from the above, in this application, the axial force sensor 6 includes a sensor spindle and an outer end portion 61 located at the outer end of the sensor spindle. The outer end portion 61 abuts against the outer end face of the oil inlet hole, ensuring high stability after assembly. The first end portion 63 of the sensor spindle is engaged at the opening of the oil inlet hole, and the second end portion 65 of the sensor spindle is engaged in the oil port on the floating bearing 5. The two ends are separated by a certain distance, which allows the sensor to sense changes in axial force between the two ends and generate corresponding axial force signals. Furthermore, there is an inwardly recessed portion 64 between the first end portion 63 and the second end portion 65. The outer wall of the inwardly recessed portion 64 does not contact the inner wall of the oil inlet hole, giving the sensor spindle a certain degree of flexibility and deformation capability, which can well adapt to deformation caused by the deviation of axial force between the inner and outer ends.

[0024] In this application, the axial force sensor 6 has a central hole 69, in which a strain detection unit is provided to sense bending deformation and generate a corresponding signal. The strain detection unit in the axial force sensor 6 of this application can be a conventional product in the prior art, and the strain data acquisition device is also a conventional product in the prior art.

[0025] In this application, the turbocharger to be tested can be placed on a workbench, which can simulate the actual working state of the turbocharger.

[0026] As can be seen from the above description, the turbocharger axial force testing system in this application uses an axial force sensor 6 inserted into the oil inlet for detection. It can detect the axial force even when the turbocharger is working and transmit the axial force data to the strain data acquisition device 8 to determine whether the design of the turbocharger is reasonable, which is very convenient.

[0027] As described above, this utility model has the following beneficial effects: It provides a turbocharger axial force testing system. By inserting an axial force sensor into the turbocharger's oil inlet, the axial force data of the turbocharger can be obtained in real time. This axial force data can effectively evaluate whether the turbocharger shaft system design is reasonable. For example, if the axial force tested under all test conditions during the entire experimental process is less than the designed turbocharger thrust capacity, it proves that the turbocharger shaft system design is reasonable and there is no risk of turbocharger casing rubbing; otherwise, there is a risk of turbocharger casing rubbing.

[0028] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A turbocharger axial force testing system, characterized in that, include: The turbocharger to be tested has an intermediate body (1) on it, and a rotating shaft (4) is provided in the intermediate body (1). Turbine assembly (2) and compressor assembly (3) are respectively provided at both ends of the rotating shaft (4). The intermediate body (1) of the turbocharger is provided with an oil inlet hole, and the rotating shaft (4) is provided with a floating bearing (5), with the oil port on the floating bearing (5) aligned with the oil inlet hole; It also includes an axial force sensor (6) inserted into the oil inlet hole, which generates a signal when subjected to axial force, and the signal is transmitted to the strain data acquisition device (8).

2. The turbocharger axial force testing system according to claim 1, characterized in that, The signal generated by the axial force sensor (6) is transmitted to the strain data acquisition device (8) via the sensor cable (7).

3. The turbocharger axial force testing system according to claim 1, characterized in that, The axial force sensor (6) includes a sensor spindle and an outer end (61) located at the outer end of the sensor spindle. The outer end (61) abuts against the outer end face of the oil inlet hole.

4. The turbocharger axial force testing system according to claim 3, characterized in that, The first end (63) of the sensor spindle is locked at the opening of the oil inlet, and the second end (65) of the sensor spindle is locked in the oil port on the floating bearing (5).

5. The turbocharger axial force testing system according to claim 4, characterized in that, There is a recessed portion (64) between the first end (63) and the second end (65), the outer wall of which does not contact the inner wall of the oil inlet hole.

6. The turbocharger axial force testing system according to claim 5, characterized in that, The axial force sensor (6) has a central hole (69) in which a strain detection unit is provided.

7. The turbocharger axial force testing system according to any one of claims 1 to 6, characterized in that, The turbocharger to be tested is placed on the workbench.

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