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Fault detection method and system for an electric air compressor

An electric air compressor and fault detection technology, which is applied in the direction of machines/engines, pump testing, mechanical equipment, etc., can solve the problem of incomplete air compressor failure detection, achieve a high degree of functional safety guarantee, short detection intervals, and detection wide range of effects

Active Publication Date: 2020-09-01
ZHENGZHOU YUTONG BUS CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a fault detection method and system for electric air compressors, which is used to solve the problem of incomplete fault detection of existing air compressors

Method used

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  • Fault detection method and system for an electric air compressor
  • Fault detection method and system for an electric air compressor

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as figure 1 As shown, the fault detection system of the electric air compressor of the present invention includes a vehicle controller VCU, an air compressor controller and an instrument alarm device, wherein the vehicle controller VCU communicates with the air compressor controller through hard wiring, and The control is connected to the instrument alarm device; the air compressor controller is connected to the air compressor.

[0028] The above-mentioned air compressor controller is used to detect the working state of the air compressor, and send the fault information of the air compressor itself to the vehicle controller VCU, so that the VCU can make a fault judgment decision.

[0029] The above-mentioned vehicle controller...

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Abstract

The invention relates to a fault detection method and system for an electric air compressor. The detection method includes the following steps: After a whole vehicle is powered on, at least one of thefollowing items is tested: whether an air compressor enablement instruction is valid, whether an air compressor control instruction is valid, whether an air compressor execution instruction state isvalid, and whether communication between the air compressor and a whole vehicle controller is normal. If any of the instructions is invalid, the execution instruction state is invalid or the communication is abnormal, an air compressor abnormity alarm is carried out. According to the invention, in a process of power-on running of the vehicle, through active detection of various possible faults ofthe air compressor, various hidden dangers of the air compressor that may occur in the air compressor can be detected, and the function safety guarantee degree of the air compressor is high, wherein adetection range is wide. Compared with off-line detection, the fault detection method and system for an electric air compressor are timely in detection and short in detection interval, can realize detection and fault treatment of random failure of an air compressor system, and can effectively avoid the problem that the function failure of the air compressor seriously affects the driving safety.

Description

technical field [0001] The invention relates to a fault detection method and system for an electric air compressor, belonging to the technical field of electric air compressor safety detection. Background technique [0002] The transformation from traditional buses to new energy buses is the main trend in the current development of buses, and the application of electric air compressors has also been popularized. The safe and effective work of the air compressor is directly related to the braking performance of the vehicle, which seriously affects the driving safety. Therefore, how to ensure the safety performance of electric air compressors during the operation of new energy vehicles is an important task in the process of vehicle design and control strategy development. In the safety life cycle of the air compressor, the following factors will lead to the failure of the air compressor function: 1) the mechanical, circuit and air circuit failure of the air compressor itself;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 程晓龙苏常军郭潇然
Owner ZHENGZHOU YUTONG BUS CO LTD
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