PI test method for single valve in ESC assembly and electronic stability control system

A technology of electronic stability control and test method, applied in the field of vehicle safety, can solve the problems of long test cycle, affecting PI test efficiency, low test accuracy, etc., and achieve the effect of improving test efficiency and accuracy

Pending Publication Date: 2022-02-15
拿森汽车科技(杭州)有限公司
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, the routine test method for single-valve PI in the ESC assembly is mostly the manual test method, mainly through the manual connection of the test pipeline by the tester. Since there are 6 single valves in the ESC assembly (2 pressure limiting valves, 4 Pressure valve) needs to be tested, after each single valve test is completed, the tester needs to manually replace the test pipeline, so the o

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  • PI test method for single valve in ESC assembly and electronic stability control system
  • PI test method for single valve in ESC assembly and electronic stability control system
  • PI test method for single valve in ESC assembly and electronic stability control system

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Example

[0039] First embodiment

[0040] See figure 1 ,like figure 1 As shown, the ESC total in the present invention has an internal single valve PI test method comprises the steps of:

[0041] Step S11: The motor starts the motion of the plunger pump to cause the ESC to actively build.

[0042] Step S12: The duty ratio of the measured valve is controlled is between the first interval, and obtains the pressure difference of the front and rear end of the detected valve by the pressure detecting device.

[0043] Step S13: The pressure differential of the valve is subjected to a different duty cycle in the first interval to obtain the PI curve of the valve.

[0044] In one embodiment, the method of the present invention further comprises: performing exhaust operation of the ESC by the motor plunger pump prior to the formal test PI curve, and the gas in the ESC is completely exhausted.

[0045] In one embodiment, step S11: The motor starts the plunger pump movement, allowing the ESC to activ...

Example

[0064] Second embodiment

[0065] The present invention also provides a method for performing the above embodiments.

[0066] See Figure 4 ,like Figure 4 As shown, the electronic stabilizing control system shown in the embodiment of the present invention includes: the oil supply valve 11, the motor plunger pump 12, the pressure regulating valve 13, a pressurizing valve, a pressure relief valve, and a pressure detecting device. The booster valve includes at least the first boost valve 15 and the second pressure reducing valve 14. The pressure relief valve includes at least the first pressure relief valve 19 and the second pressure relief valve 18. The pressure detecting device includes at least the first pressure sensor 1, the second pressure sensor 2, and the third pressure sensor 3. The motor plunger pump 12 includes a motor and a plunger pump, the motor and the plunger pump 2 via a fully mechanical contact connection, the plunger pump driven in the motor rotates for piston movem...

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Abstract

The invention provides a PI test method for a single valve in an ESC assembly and an electronic stability control system. The PI test method for the single valve in the ESC assembly comprises the steps that a motor is started, an oil supply valve is opened, a pressure regulating valve is closed, a brake cylinder is made to supply a liquid to the ESC, and the ESC is controlled to carry out active pressure buildup. The duty ratio of a first pressure increasing valve to be detected is controlled to be a first interval, and the pressure difference between the front end and the rear end of the first pressure increasing valve is obtained through a pressure detection device; and the pressure differences of the first pressure increasing valve under different duty ratios in the first interval are respectively recorded to obtain a PI curve of the first pressure increasing valve. In the invention, according to the active pressure buildup function of the ESC, the motor rotates to drive the piston of a plunger pump to move to build the pressure, and then corresponding single valves in the tested assembly are sequentially controlled so that the PI automatic test can be realized, excessive manual participation is not needed, and the test efficiency and accuracy of the ESC assembly PI are greatly improved.

Description

technical field [0001] The invention relates to the technical field of vehicle safety, in particular to a PI test method for a single valve in an ESC assembly and an electronic stability control system. Background technique [0002] With the development and popularization of the automobile industry, the stability of automobile chassis electronic products is also very important. Among them, the overall control effect of ESC products on the vehicle has also received special attention. Since the control effect of ESC products on the vehicle is mainly based on the accuracy of the single-valve PI written in the software in the ESC assembly, and there is currently no fast and effective method for testing the single-valve PI test method in the ESC assembly in the entire industry, so how to quickly Efficient testing of the single-valve PI in the ESC assembly is also an urgent problem to be solved in the industry. [0003] At present, the routine test method for single-valve PI in ...

Claims

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Application Information

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IPC IPC(8): G01M13/003G01L13/00G05B15/02
CPCG01M13/003G01L13/00G05B15/02
Inventor 陶喆刘海珍余茂奎张日波张晨鸣陆锋
Owner 拿森汽车科技(杭州)有限公司
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