Diesel ignition type engine gas nozzle fault diagnosing instrument and diagnosing method thereof

A combustion engine, fault diagnosis instrument technology, applied in the diagnosis of machinery and leakage faults, diesel ignition engine gas nozzle fault diagnosis instrument and its diagnosis, circuit field, can solve the problem of inability to diagnose gas nozzle mechanical faults, etc., to achieve Achieve effective diagnosis and improve detection efficiency

Active Publication Date: 2017-07-28
DONGFENG COMML VEHICLE CO LTD
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the mechanical failure of the gas nozzle cannot be diagnosed in the prior art, and to provide a method capable of diagnosing the mechanical and circuit failure of the gas nozzle Diesel Pilot Engine Gas Injection Fault Diagnosis Instrument and Its Diagnosis Method

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
  • Diesel ignition type engine gas nozzle fault diagnosing instrument and diagnosing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 , a diesel ignition type engine gas nozzle fault diagnostic instrument, the diagnostic instrument is provided with a signal receiving module 1, a mechanical or circuit fault diagnostic module 2, a leakage fault diagnostic module 3, a signal output module 4, the signal receiving module The input end of 1 is electrically connected with the engine speed sensor 5, the gas rail pressure sensor 6, and the nozzle opening and closing state detection device 7, and the output end of the signal receiving module 1 is electrically connected with the input end of the signal output module 4 through the mechanical or circuit fault diagnosis module 2. The two output ends of the signal receiving module 1 are electrically connected to the input end of the signal output module 4 through the leakage fault diagnosis module 3 .

[0046] A diagnostic method for a gas nozzle fault diagnostic instrument for a diesel pilot ignition engine, including a mechanical or circuit fault diag...

Embodiment 2

[0050] Step embodiment 1, the difference is:

[0051] In the mechanical or circuit fault diagnosis method, the mechanical or circuit fault diagnosis module 2 calculates that the nozzle opening and closing state, engine speed, and gas rail pressure do not change before and after the nozzle is opened, and diagnoses it as a circuit fault.

[0052] In the leakage fault diagnosis method, the leakage fault diagnosis module 3 calculates that there is no change in the opening and closing state of the nozzle, the engine speed, and the gas rail pressure, and diagnoses that there is no leakage fault.

Embodiment 3

[0054] Step embodiment 1, the difference is:

[0055] In the mechanical or circuit fault diagnosis method, the mechanical or circuit fault diagnosis module 2 calculates that there is a change in the opening and closing state of the nozzle before and after the nozzle is opened, but there is no change in the engine speed and the gas rail pressure, and the diagnosis is a mechanical fault.

[0056] In the leakage fault diagnosis method, the leakage fault diagnosis module 3 calculates that there is no change in the opening and closing state of the nozzle, the engine speed increases, and the gas rail pressure decreases, and it is diagnosed as an internal leakage fault.

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

The invention provides a diesel ignition type engine gas nozzle fault diagnosing instrument. The diesel ignition type engine gas nozzle fault diagnosing instrument is internally provided with a signal receiving module, a machine or circuit fault diagnosing module, a leakage fault diagnosing module and a signal output module, wherein the input end of the signal receiving module is electrically connected with an engine rotating speed sensor, a gas track pressure sensor and a nozzle opening and closing state detection device, and the output end of the signal receiving module is electrically connected with the input end of the signal output module through the machine or circuit fault diagnosing module / leakage fault diagnosing module. Under the engine idling condition, the machine or circuit fault diagnosing module and the leakage fault diagnosing module conduct contrast calculation according to detection signals received from the engine rotating speed sensor, the gas track pressure sensor and the nozzle opening and closing state detection device, and whether nozzles have machine or circuit faults and leakage faults or not is diagnosed. According to the diesel ignition type engine gas nozzle fault diagnosing instrument, diagnosis of machine or circuit faults and leakage faults of the nozzles can be effectively achieved.

Description

technical field [0001] The invention belongs to the technical field of locomotive engines, and in particular relates to a diesel ignition type engine gas nozzle fault diagnosis instrument and a diagnosis method thereof, which are suitable for realizing the diagnosis of nozzle circuit, machinery and leakage faults. Background technique [0002] Diesel-ignited natural gas engine is a modification scheme that is often used to transform diesel engines into natural gas engines. Compared with gasoline engines and diesel engines, the combustion process of diesel pilot natural gas engines is very special, with dual characteristics of DIESEL and OTTO cycle combustion, and the two are coupled with each other. With the development of the automobile industry, the position of the online diagnosis system in the modern automobile service system is becoming more and more important. Concentrating fault diagnosis and information transmission is the main technical basis for fault diagnosis in...

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
IPC IPC(8): F02M65/00
CPCF02M65/00Y02T10/40
Inventor 王坤陈永昌熊军林蒋齐良
Owner DONGFENG COMML VEHICLE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap