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Filter failure detection method, hydraulic system, vehicle and storage medium

A detection method and filter technology, applied in the detection field, can solve problems such as damage, transmission failure, and failure to detect in time.

Active Publication Date: 2020-11-06
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the filter fails due to the accumulation of impurities, the impurities in the oil will enter the hydraulic control system in the hydraulic system, and eventually cause the transmission to fail or even be completely damaged
Usually, the filter used in the automatic transmission is replaced at a fixed cycle. If the filter fails early due to special reasons during the replacement cycle, it cannot be found in time.

Method used

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  • Filter failure detection method, hydraulic system, vehicle and storage medium
  • Filter failure detection method, hydraulic system, vehicle and storage medium
  • Filter failure detection method, hydraulic system, vehicle and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0042] figure 1 It is a schematic flow chart of a filter failure detection method provided in Embodiment 1 of the present invention. The method is applicable to the detection of filter failure. Specifically, the method is applicable to real-time detection of the state of the filter during the operation of the transmission , Timely identification of premature filter failure before the rated replacement cycle is reached. The method can be executed by a transmission controller, which can be understood as an automatic transmission control unit (Transmission Control Unit, TCU), and the transmission controller can be integrated in a hydraulic system. The hydraulic system may include an electric oil pump, a filter, a main oil circuit, a pressure sensor, an accumulator, a motor controller, an oil temperature sensor and a transmission controller; the hydraulic system is provided with an oil source by an electric oil pump to establish system pressure. The motor controller of the electr...

Embodiment 2

[0064] Figure 2a It is a schematic flow chart of a filter failure detection method provided by Embodiment 2 of the present invention. Embodiment 2 is optimized on the basis of Embodiment 1. In this embodiment, the further embodiment includes: the transmission controller triggers the detection instruction under the preset condition, the preset condition includes no action of the actuator and the pressure value of the main oil circuit is less than the first preset pressure value.

[0065] Further, in this embodiment, the transmission controller also determines the detection result of filter failure according to the actual work value and the preset standard work value, specifically including:

[0066] The transmission controller continues to execute the acquisition operation of the working parameters until the number of times of acquiring the working parameters reaches the first preset number of times;

[0067] The transmission controller determines the detection result of filt...

Embodiment 3

[0119] image 3 It is a schematic structural diagram of a hydraulic system provided by Embodiment 3 of the present invention. The hydraulic system is applicable to the detection of filter failure. Specifically, the hydraulic system is applicable to real-time detection of the state of the filter during the operation of the transmission. Promptly identify premature filter failures before the rated replacement interval is reached. Such as image 3 As shown, the hydraulic system includes: electric oil pump 31, filter 32, main oil circuit 33, pressure sensor 34, accumulator 35, motor controller (not shown in the figure), oil temperature sensor (not shown in the figure ) and transmission controller (not shown in the figure);

[0120] The electric oil pump 31 is connected with the filter 32, the main oil circuit 33 is connected with the filter 32, the accumulator 35 and the pressure sensor 34 respectively, and the transmission controller is connected with the electric oil pump 31, ...

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Abstract

The invention discloses a filter failure detection method, a hydraulic system, a vehicle and a storage medium. The method comprises the steps that after a transmission controller detects a detection command, an electric oil pump is controlled to work at a preset rotating speed, and working parameters of a motor of the electric oil pump during a pressure value of a main oil path is obtained from afirst preset pressure value to a second preset pressure value; the transmission controller determines an actual acting value of the motor according to the working parameters; the transmission controller determines the actual acting value of the motor according to the working parameters; and the transmission controller determines the failure detection result of the filter according to the actual acting value and the preset standard acting value. By means of the method, the failure detection of the filter can be realized before the replacement period is reached.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of detection, and in particular to a filter failure detection method, a hydraulic system, a vehicle and a storage medium. Background technique [0002] In recent years, with the rapid development of vehicle technology, more and more vehicles are equipped with automatic transmission, which is an automotive transmission that can automatically change the gear ratio while the vehicle is running, so that the driver does not have to change gears manually. [0003] At present, automatic transmissions generally use electric motors or hydraulic transmission mechanisms in hydraulic systems as power sources for actuators such as gear selection and clutches. For an automatic transmission using a hydraulic system, the cleanliness of the oil is crucial to the function and performance of the transmission, and the cleanliness is guaranteed by the filter in the oil circuit of the hydraulic system. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B19/00F15B1/02F15B21/02F16H61/02G01N15/08G01M17/007
CPCF15B1/02F15B19/005F15B21/02F16H61/0265F16H61/0276F16H2061/0043F16H2061/0068G01M17/007G01N15/08G01N2015/084
Inventor 陈建勋顾强刘振宇康志军叶珂羽
Owner CHINA FIRST AUTOMOBILE