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Fault Diagnosis and Control Method of Automobile Vacuum Pump

A fault diagnosis and control method technology, applied in the direction of brakes, vehicle components, brake safety systems, etc., can solve the problem of not being able to ensure the normal operation of the vacuum pump safely, efficiently and quickly, not being able to provide fault reasons to maintenance personnel, and the degree of vacuum pump fault diagnosis is simple, etc. problems, to achieve the effect of improving safety performance and braking performance, in-depth and comprehensive fault diagnosis, and more stable operation

Active Publication Date: 2021-08-03
YIBIN COWIN AUTO CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, the research on the control and fault diagnosis of automotive vacuum pumps is more inclined to the development of hardware optimization, and the research in the field of strategy is not perfect
At present, the hardware technology is relatively mature, and the cost of continuing to optimize the hardware is relatively high for automotive research, and the expected effect is not very significant; the control and diagnosis strategies of traditional vacuum pumps are in the input link, intermediate control link (such as fault handling), and output link etc. are not perfect enough to ensure the normal operation of the vacuum pump safely, efficiently and quickly; traditional vacuum pumps consider the two processes of control and diagnosis together, resulting in too cumbersome control process when the vacuum pump is running in the non-fault stage; the fault diagnosis range of traditional vacuum pumps is too large It is too small to meet the needs of fault diagnosis; the fault diagnosis of traditional vacuum pumps is too simple and cannot provide specific fault causes to maintenance personnel

Method used

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  • Fault Diagnosis and Control Method of Automobile Vacuum Pump
  • Fault Diagnosis and Control Method of Automobile Vacuum Pump
  • Fault Diagnosis and Control Method of Automobile Vacuum Pump

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Embodiment Construction

[0026] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0027] The purpose of the present invention is to formulate a more comprehensive vacuum pump control and diagnosis strategy, to efficiently and quickly control the normal operation of the vacuum pump, to better assist automobile braking and ensure safety.

[0028] Vacuum booster system, mainly including: automotive low-voltage battery, vacuum pressure sensor, vacuum pump, booster system controller, brake pedal, automotive power switch

[0029] The scheme is as follows:

[0030] The VCU controls the switch of the vacuum pump according to the collected vacuum pressure value, maintains the vacuum within a certain range, and ensures the normal operation of the brake booster system. In addition, fault diagnosis and treatment are performed on vacuum pressure sensors and vacuum pumps to reduce po...

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Abstract

The invention discloses a fault diagnosis and control method for a vacuum pump system of an automobile, which includes: after the vehicle is started and the brake pedal is not stepped on, the startup fault detection step of the vacuum pump system is entered, and the low-voltage storage battery, the The fault status of the booster system controller, vacuum pump, and vacuum sensor, and store fault codes and give fault reminders. The invention has the advantages of high diagnostic accuracy, reasonable control, and more comprehensive and reliable control and diagnosis of the vacuum pump system.

Description

technical field [0001] The invention relates to the technical field of automobile vacuum systems, in particular to a fault diagnosis and control method of an automobile vacuum pump. Background technique [0002] At present, the research on the control and fault diagnosis of automotive vacuum pumps is more inclined to the development of hardware optimization, and the research in the field of strategy is not perfect. At present, the hardware technology is relatively mature, and the cost of continuing to optimize the hardware is relatively high for automotive research, and the expected effect is not very significant; the control and diagnosis strategies of traditional vacuum pumps are in the input link, intermediate control link (such as fault handling), and output link etc. are not perfect enough to ensure the normal operation of the vacuum pump safely, efficiently and quickly; traditional vacuum pumps consider the two processes of control and diagnosis together, resulting in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T17/22B60T13/52
CPCB60T13/52B60T17/22
Inventor 李果郭军曾彬余苧仕何伟
Owner YIBIN COWIN AUTO CO LTD
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