A vacuum pressure testing device for a vehicle vacuum pump

Abstract

The utility model discloses a kind of vacuum pump vacuum pressure testing devices for vehicle, involve automobile electronic field.The vacuum pump vacuum pressure testing device for vehicle, including vacuum pump for vehicle, three-way pipe, pressure sensor, flowmeter and angle switch valve.The vacuum pump vacuum pressure testing device for vehicle, after test begins, vacuum pump for vehicle starts rotating operation and pumping, air is pumped into pipeline.High-precision pressure sensor real-time measurement high-resolution vacuum pressure data in three-way pipe, and be transmitted to computer for storage and analysis by data acquisition terminal.At the same time, the opening of angle switch valve can be adjusted, the air intake of flowmeter is controlled, so as to simulate the vacuum state of brake booster / valve under different opening degree.Flowmeter real-time indicates the flow value under current valve opening degree, guides valve to open to the opening degree required in current test working condition.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronics technology, specifically to a vacuum pressure testing device for automotive vacuum pumps. Background Technology

[0002] Automotive vacuum pumps are generally driven by rotating components such as the engine camshaft and oil pump shaft, causing the vacuum pump shaft to rotate coaxially. Combined with the eccentric structure of the vacuum pump chamber, air drawn into the chamber is pumped out to the engine through blades and other structures, thereby creating a vacuum with a certain pressure in the pump chamber. This vacuum is then provided through pipelines for functions such as brake assist and valve opening and closing.

[0003] During the engine product development and design phase, it is necessary to simulate the engine's operating conditions under different vacuum (pressure) requirements. Since the maximum pumping flow rate is determined after the vacuum pump selection and design are completed, and this pressure value cannot be manually changed or adjusted, it is impossible to manually and precisely control different vacuum pump intake volumes (corresponding to different vacuum levels). Furthermore, the actual current pumping volume and vacuum level of the vacuum pump are affected by factors such as pump structure, rotational speed, and intake volume, making it impossible to monitor the current vacuum level (or vacuum pressure) in real time.

[0004] This invention designs a vacuum pressure testing device that can adjust, test, and analyze the vacuum pressure of a vacuum pump, thereby comprehensively simulating different vacuum requirements of a vehicle and supporting data analysis such as vacuum pressure fluctuations. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vacuum pressure testing device for automotive vacuum pumps. It solves the problem that after the vacuum pump has been selected and designed, the maximum pumping flow rate is already determined, and the pressure value cannot be manually changed or adjusted. Therefore, it is impossible to manually and accurately control the different vacuum pump intake volumes, and the actual pumping volume and vacuum level of the vacuum pump are affected by the pump body structure, speed, intake volume, etc., making it impossible to monitor the current vacuum level in real time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum pressure testing device for a vehicle vacuum pump, comprising:

[0007] A vehicle vacuum pump is fixedly installed on a car engine to deliver air and create a vacuum.

[0008] A three-way pipe, one end of which is connected to the vehicle vacuum pump;

[0009] A pressure sensor is connected to one end of a three-way pipe, and the pressure sensor is externally connected to a data acquisition terminal. The pressure sensor is used to measure real-time vacuum pressure data and transmit the data to the data acquisition terminal.

[0010] The flow meter is connected to one end of the tee pipe;

[0011] An angle switch valve is connected to a flow meter. The angle switch valve is used to control the air intake volume and simulate different vacuum states of a brake booster / valve. The flow meter is linked to the angle switch valve and is used to indicate and monitor the flow value at the current valve opening in real time.

[0012] Preferably, the top of the vehicle vacuum pump is connected to an air intake valve pipe.

[0013] Preferably, the three-way pipe is connected to a first vacuum line, a second vacuum line and a third vacuum line, and the first vacuum line is connected to the intake valve pipe.

[0014] Preferably, the second vacuum line and the third vacuum line are connected to the flow meter and the pressure sensor, respectively.

[0015] Preferably, the pressure sensor is equipped with a data acquisition harness, and the data acquisition harness is connected to a data acquisition terminal.

[0016] Preferably, the data acquisition terminal is connected to a computer, which enables the computer to store and analyze the data acquired in the data acquisition terminal.

[0017] This utility model discloses a vacuum pressure testing device for automotive vacuum pumps, which has the following beneficial effects:

[0018] This automotive vacuum pump vacuum pressure testing device works as follows: After the test begins, the automotive vacuum pump starts rotating and evacuating air into the pipeline. A high-precision pressure sensor measures the high-resolution vacuum pressure data within the three-way pipe in real time, and transmits this data to a computer for storage and analysis via a data acquisition terminal. Simultaneously, the device can control the amount of air entering the flow meter by adjusting the opening of the angle switch valve, thus simulating the vacuum state of a brake booster / valve at different opening degrees. The flow meter indicates the flow rate at the current angle switch valve opening, guiding the valve to open to the required degree for the current test condition. This device provides crucial reference for the performance testing of automotive vacuum pumps through precise manual airflow control and high-resolution vacuum pressure data acquisition. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram showing the pressure values ​​under different vacuum pump intake volumes according to this utility model.

[0022] In the diagram: 1. Vehicle vacuum pump; 11. Intake valve pipe; 2. T-pipe; 21. First vacuum line; 22. Second vacuum line; 23. Third vacuum line; 3. Pressure sensor; 31. Data acquisition harness; 4. Flow meter; 5. Angle switch valve; 6. Data acquisition terminal; 7. Computer. Detailed Implementation

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] This utility model discloses a vacuum pressure testing device for a vehicle vacuum pump.

[0025] According to the appendix Figure 1-2 As shown, it includes:

[0026] The vehicle vacuum pump 1 is fixedly installed on the car engine and is used to deliver air to create a vacuum;

[0027] T-pipe 2, one end of which is connected to vehicle vacuum pump 1;

[0028] Pressure sensor 3 is connected to one end of the three-way pipe 2, and pressure sensor 3 is externally connected to data acquisition terminal 6. Pressure sensor 3 is used to measure real-time vacuum pressure data and transmit the data to data acquisition terminal 6.

[0029] Flow meter 4 is connected to one end of the three-way pipe 2;

[0030] Angle switch valve 5 is connected to flow meter 4. Angle switch valve 5 is used to control the air intake volume and simulate different vacuum states of brake booster / valve. Flow meter 4 is linked with angle switch valve 5 to indicate and monitor the flow value at the current opening degree of angle switch valve 5 in real time.

[0031] After the test begins, the vehicle vacuum pump 1 starts rotating and pumping air into the pipeline. A high-precision pressure sensor 3 measures the high-resolution vacuum pressure data within the three-way pipe 2 in real time and transmits it to the computer 7 for storage and analysis via the data acquisition terminal 6. Simultaneously, the air intake to the flow meter 4 can be controlled by adjusting the opening of the angle switch valve 5, thus simulating the vacuum state of the brake booster / valve at different opening degrees. The flow meter 4 indicates the flow rate value at the current opening degree of the angle switch valve 5, guiding the valve to open to the required degree for the current test condition (while monitoring the flow rate value, the angle switch valve 5 is adjusted until the required flow rate is achieved). This device provides crucial reference for the performance testing of the vehicle vacuum pump 1 through precise manual air intake flow control and high-resolution vacuum pressure data acquisition.

[0032] Furthermore, an intake valve pipe 11 is connected to the top of the vehicle vacuum pump 1.

[0033] Furthermore, the three-way pipe 2 is connected to a first vacuum line 21, a second vacuum line 22 and a third vacuum line 23, and the first vacuum line 21 is connected to the intake valve pipe 11.

[0034] Furthermore, the second vacuum line 22 and the third vacuum line 23 are connected to the flow meter 4 and the pressure sensor 3, respectively.

[0035] Furthermore, the pressure sensor 3 is equipped with a data acquisition harness 31, and the data acquisition harness 31 is connected to the data acquisition terminal 6.

[0036] Furthermore, the data acquisition terminal 6 is connected to a computer 7, which can store and analyze the data acquired by the data acquisition terminal 6.

[0037] Securely mount the vehicle vacuum pump 1 to the car engine, ensuring a stable connection. Connect one end of the three-way pipe 2 to the intake valve pipe 11 of the vehicle vacuum pump 1, and connect the other two ends to the pressure sensor 3 and the flow meter 4, respectively. Connect the angle switch valve 5 to the flow meter 4, ensuring a tight and leak-free connection.

[0038] Turn on the vehicle vacuum pump 1 and check that all component connections are properly sealed and leak-free. Adjust the opening of the angle switch valve 5 and observe whether the reading on the flow meter 4 changes to verify the device's adjustment function. Check the accuracy of the pressure sensor 3's measurement data via the data acquisition terminal 6 and ensure that the data can be successfully transmitted to the computer 7.

[0039] After the test begins, the vehicle vacuum pump 1 starts rotating and pumping air into the pipeline. A high-precision pressure sensor 3 measures the high-resolution vacuum pressure data within the three-way pipe 2 in real time and transmits it to the computer 7 for storage and analysis via the data acquisition terminal 6. Simultaneously, the air intake to the flow meter 4 can be controlled by adjusting the opening of the angle switch valve 5, thus simulating the vacuum state of the brake booster / valve at different opening degrees. The flow meter 4 indicates the flow rate value at the current opening degree of the angle switch valve 5, guiding the valve to open to the required degree for the current test condition (while monitoring the flow rate value, the angle switch valve 5 is adjusted until the required flow rate is achieved). This device provides crucial reference for the performance testing of the vehicle vacuum pump 1 through precise manual air intake flow control and high-resolution vacuum pressure data acquisition.

[0040] This device can be used for high-precision data testing and analysis of real-time vacuum pressure, and can identify pressure fluctuations; such as Figure 2 As shown, it can test pressure fluctuation accuracy in the 10-millisecond range; the device does not require the traditional method of controlling the pump flow of the vehicle vacuum pump 1 by adjusting the vacuum level of the brake booster components, but achieves this through the control of a controllable flow valve.

[0041] This device can achieve full-condition control and simulate the operating conditions of all automotive vacuum pumps at a flow rate of 1; such as... Figure 2 As shown, it can perform pressure testing from 0% to 100% flow rate; it can monitor and adjust the intake air volume in the vacuum pipeline; the device has a high degree of integration, with only one external interface connected to the automotive vacuum pump 1, allowing for quick switching to different engines and sites; it has good data accessibility, outputting only voltage-type signals, and through sensitivity conversion and calibration, it can be connected to any data acquisition device capable of reading signals for data analysis; such as Figure 2 The measured data shown can be used for pressure amplitude comparison, pressure value Fourier transform, pressure phase analysis, etc., for analysis of related issues.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum pressure testing device for a vehicle vacuum pump, characterized in that, include: A vehicle vacuum pump (1) is fixedly installed on a car engine and is used to deliver air to create a vacuum. A three-way pipe (2) is connected at one end to a vehicle vacuum pump (1); A pressure sensor (3) is connected to one end of a three-way pipe (2), and the pressure sensor (3) is externally connected to a data acquisition terminal (6). The pressure sensor (3) is used to measure real-time vacuum pressure data and transmit the data to the data acquisition terminal (6). The flow meter (4) is connected to one end of the three-way pipe (2); An angle switch valve (5) is connected to a flow meter (4). The angle switch valve (5) is used to control the intake air volume and simulate different vacuum states of the brake booster / valve. The flow meter (4) is linked with the angle switch valve (5) and is used to indicate and monitor the flow value under the current opening degree of the angle switch valve (5) in real time.

2. The vehicle vacuum pump vacuum pressure testing device according to claim 1, characterized in that, The top of the vehicle vacuum pump (1) is connected to an intake valve pipe (11).

3. The vehicle vacuum pump vacuum pressure testing device according to claim 2, characterized in that, The three-way pipe (2) is connected to a first vacuum line (21), a second vacuum line (22) and a third vacuum line (23), and the first vacuum line (21) is connected to the air intake valve pipe (11).

4. The vehicle vacuum pump vacuum pressure testing device according to claim 3, characterized in that, The second vacuum line (22) and the third vacuum line (23) are connected to the flow meter (4) and the pressure sensor (3), respectively.

5. The vacuum pressure testing device for a vehicle vacuum pump according to claim 1, characterized in that, The pressure sensor (3) is equipped with a data acquisition harness (31), and the data acquisition harness (31) is connected to the data acquisition terminal (6).

6. The vacuum pressure testing device for a vehicle vacuum pump according to claim 5, characterized in that, The data acquisition terminal (6) is connected to a computer (7), and the computer (7) can store and analyze the data collected in the data acquisition terminal (6).

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