Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Detection device and method for fault of engine fuel system

A fuel system and detection device technology, which is applied in the direction of engine testing, measuring devices, machine/structural component testing, etc. It can solve the problem of weak ability to explain the cause of failure, weak guidance for troubleshooting, and inability to judge the fuel supply angle. Size and other issues

Inactive Publication Date: 2009-03-11
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the detection methods of the fuel system mainly include vibration purification method, waveform analysis method, spectrum analysis method and frequency response function method. The size of the oil angle, therefore, has a certain one-sidedness, resulting in a weak ability to explain the cause of the fault, and the guidance for troubleshooting is not strong

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detection device and method for fault of engine fuel system
  • Detection device and method for fault of engine fuel system
  • Detection device and method for fault of engine fuel system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The specific implementation manner of the present invention will be further described in detail below in conjunction with the drawings and specific examples.

[0027] As shown in Fig. 1, the detection device of the engine fuel system failure of the present invention includes a rotational speed detection unit 5, a vibration detection unit 4 and a data processing unit 6, wherein the data processing unit 6 receives the speed detected by the rotational speed detection unit 5 The rotation speed signal and the combustion vibration signal obtained by the vibration detection unit 4 are amplified by the amplifier circuit and the A / D conversion circuit, and the analog / digital conversion is performed on the above-mentioned signal, and the pulse waveform of the rotation speed and the combustion vibration waveform are compared and analyzed to determine the Oil advance angle and combustion conditions.

[0028] to combine figure 2 As shown, the rotational speed detection unit 5 inclu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for detecting fault of fuel oil system on engine includes utilizing rotation speed detection unit and vibration detection unit to collect rotation speed signal and vibration signal simultaneously then carrying out comparison and analysis on then, obtaining advance angle of fuel oil injection by comparing lead edge of pulse waveform on rotation speed with lead edge of vibration waveform on combustion and enabling to accurately judge out operation condition of air cylinder by analyzing magnitude value of vibration waveform.

Description

technical field [0001] The invention relates to an engine fault detection technology, in particular to a detection device and method for an engine fuel system fault. Background technique [0002] The main faults of the fuel system of the engine include flameout of individual cylinders, early or late fuel injection, etc. The main reason for flameout is that the fuel injector is blocked and the fuel supply pressure of the fuel injection pump is insufficient, so that the fuel cannot be atomized well, thus causing the corresponding cylinder to not work. On the one hand, flameout causes a great waste of fuel. For example, for a large-scale drilling PZ12V190 engine, if one cylinder is flamed out, nearly 1 / 12 of the fuel will be wasted. According to incomplete statistics, domestic large-scale diesel engines will lose On the other hand, it causes insufficient power output of the engine, which affects production, and makes the torque of the whole machine unbalanced, causing torsiona...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/00
Inventor 王朝晖张来斌段礼祥梁伟
Owner CHINA UNIV OF PETROLEUM (BEIJING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com