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A fault detection method, device and hydraulic drive system

A drive system and fault detection technology, which is applied in the testing of fluid pressure actuation systems, fluid pressure actuation devices, mechanical equipment, etc., can solve the problems of low accuracy and complicated bypass valve fault detection operations, and achieve simple and accurate The effect of detection

Active Publication Date: 2020-06-02
WEICHAI POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of this application is to provide a fault detection method, device and hydraulic drive system, which are used to solve the problem of complex and low accuracy in the fault detection operation of the bypass valve in the prior art

Method used

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  • A fault detection method, device and hydraulic drive system
  • A fault detection method, device and hydraulic drive system
  • A fault detection method, device and hydraulic drive system

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Embodiment Construction

[0054] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0055] The fault detection method provided by the embodiment of the present application is applied to a hydraulic drive system, and is used to detect whether a bypass valve in the hydraulic drive system is faulty.

[0056] see figure 1 As shown, the fault detection method may include the following steps:

[0057] S101. Determine whether the hydraulic drive system is in a working state and does not provide a driving force;

[0058] If i...

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Abstract

The invention provides a fault detecting method and device and a hydraulic driving system. The method is used for determining whether the hydraulic driving system is in a work state and does not provide driving force or not, and if it is determined that the hydraulic driving system is in the work state and does not provide the driving force, whether a pressure value in the hydraulic driving systemis larger than a preset threshold or not is determined; and if it is determined that the pressure in the hydraulic driving system is larger than the preset threshold, it is determined that a bypass valve has a fault. It is achieved that through the pressure value in the hydraulic driving system, whether the bypass valve has a fault or not can be detected. The problems that in the prior art, whenfault detecting is performed on a bypass valve in a hydraulic driving system, work of the hydraulic driving system needs to stop, whether the bypass valve has a structural fault or not needs to be manually detected, consequently fault detecting operation on the bypass valve is complicated, and accuracy is low are solved.

Description

technical field [0001] The invention belongs to the technical field of fault detection, and in particular relates to a fault detection method, a device and a hydraulic drive system. Background technique [0002] The hydraulic drive system supplies fuel drive power to the engine fuel supply system. In practical applications, whether the bypass valve in the hydraulic drive system can work normally will have a significant impact on the accuracy and safety of the engine fuel supply system. [0003] At present, the detection method of whether the bypass valve is faulty in the hydraulic drive system is to detect whether the hardware structure of the bypass valve is faulty, so as to realize the fault detection of the bypass valve. [0004] This detection method needs to stop the work of the hydraulic drive system and needs to manually detect whether the bypass valve has a structural fault, which leads to complicated and low accuracy of the fault detection operation for the bypass ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B19/00
CPCF15B19/005
Inventor 鹿雪文周飞章贾瑞常铖
Owner WEICHAI POWER CO LTD
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