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Method for diagnosing engine failure

A fault diagnosis and engine technology, applied in the direction of engine testing, machine/structural component testing, measuring devices, etc., can solve problems such as data false alarms, and achieve the effect of improving objectivity and accuracy

Inactive Publication Date: 2015-04-29
WUHU YANGYU ELECTROMECHANICAL TECH DEV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to overcome the problem of false alarms caused by problem data monitored by sensors in the prior art, the present invention provides a method for diagnosing engine faults

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  • Method for diagnosing engine failure
  • Method for diagnosing engine failure
  • Method for diagnosing engine failure

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Embodiment Construction

[0018] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0019] An engine fault diagnosis method, which uses the genetic BP neural network algorithm to screen the data detected by the sensor to select the best sensor measurement value, and then compares it with the characteristic frequency range set by the system to draw a fault conclusion. Ordinary sensor data is always sent to the data controller for real-time comparison and processing of data with high a...

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Abstract

The invention relates to a method for diagnosing engine failure, and belongs to the technical field of diagnosis of the engine failure. The method comprises the following steps: step 1, acquiring engine parameter data detected by a sensor; step 2, pre-processing the data in step 1; step 3, sieving the data in step 2 by a genetic BP neural network algorithm; step 4, comparing the sieved data with a set feature frequency range; step 5, outputting the failure. According to the method, the data detected by the sensor is processed and sieved by the genetic BP neural network algorithm, so that the objectivity and accuracy of the diagnosis are improved, whether an engine has a certain failure or not can be diagnosed accurately, false alarm can be avoided, and the problem of false alarm caused by the problem data detected by the sensor in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of engine fault diagnosis, in particular to an engine fault diagnosis method. Background technique [0002] As the heart of construction machinery, the engine's performance is directly related to the power, economy, reliability, environmental protection and safety of the entire system of construction machinery. With the improvement of engine strengthening, the structure of the engine has become very complicated, the working conditions are also very bad, and the possibility of failure is greatly increased. [0003] Long-term use of the engine, such as friction, wear, improper installation, adjustment and maintenance, etc., cause the matching clearance of the various parts of the engine to be too large, causing various abnormal noises of the engine. The most common engine wear faults are: piston knocking cylinder, piston pin ringing, connecting rod bearing ringing, crankshaft bearing ringing, valve ringing, e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00
Inventor 李杨宇徐尼云
Owner WUHU YANGYU ELECTROMECHANICAL TECH DEV
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