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Engine exhaust pressure electronic waveform detection and identification method and system

An exhaust pressure and waveform detection technology, applied in engine testing, engine components, combustion engines, etc., can solve the problems of extensive detection and maintenance, lack of generator exhaust electronic pressure waveform detection and analysis, etc., to achieve a broad market application space , improve the technical level, enrich the effect of technical means

Active Publication Date: 2020-12-29
广东唯普汽车科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the detection process, there is a lack of detection and analysis of the electronic pressure waveform of the generator exhaust
The detection and maintenance are too extensive, judged by feeling, and diagnosed by experience, and often take a lot of detours

Method used

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  • Engine exhaust pressure electronic waveform detection and identification method and system
  • Engine exhaust pressure electronic waveform detection and identification method and system
  • Engine exhaust pressure electronic waveform detection and identification method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The electronic waveform detection method of the engine exhaust pressure includes: refer to figure 1 ,

[0034] ① Install an exhaust pressure sensor 200, place the exhaust pressure sensor 200 through the sleeve 600 on the exhaust pipe of the vehicle to be detected, so that the sensor is located within 2cm of the outlet of the exhaust pipe 100, and place the exhaust pressure sensor 200 The susceptible surface faces the direction of the exhaust source;

[0035] ② Detect and record the electronic waveform of the output signal of the exhaust pressure sensor;

[0036] ③Respectively adjust the working conditions of the engine so that the engine is in one or more of the idling conditions, light load conditions, medium compliance conditions, heavy load conditions, and acceleration conditions, and record the corresponding exhaust conditions. Electronic waveform of a barometric pressure sensor.

[0037] Identification methods include:

[0038]①Frequency domain identification: ...

Embodiment 2

[0051] Such as figure 1 As shown, the system includes an exhaust pressure sensor 200, a data processing unit 300 and a display unit 400. The exhaust pressure sensor 200 is placed at the exhaust pipe port of the vehicle to be detected through the sleeve 600, so that the sensor is located at the exhaust pipe 100 Within the range of 2cm from the outlet, there is also an exhaust pressure sensor connected to a data processing unit, which is used to transmit the electronic signal output by the exhaust pressure sensor to the data processing unit, and the data processing unit detects the electronic waveform of the engine exhaust pressure according to Embodiment 1. and identification method for calculation processing; the data processing unit is also connected to the display unit for terminal display of the calculation results through the display unit. It is output first, and the displayed information is used to analyze the operating characteristics of the engine, the performance of th...

Embodiment 3

[0055] Such as figure 2 As shown, the system includes an exhaust pressure sensor 200, a wireless data receiving unit 500, a data processing unit 300 and a display unit 400. The exhaust pressure sensor 200 is placed at the exhaust pipe port of the vehicle to be detected through the sleeve 600, so that The sensor is located within 2cm of the outlet of the exhaust pipe 100. The exhaust pressure sensor can be provided with a signal transmitting device, and the radio frequency signal is transmitted and output by wireless transmission. The wireless data receiving unit receives the radio frequency signal transmitted and output by wireless transmission, and the wireless data is received. The unit is connected to the data processing unit, which is used to receive the radio frequency electronic signal output by the exhaust pressure sensor and then transmit it to the data processing unit. The data processing unit performs calculation processing according to the electronic waveform detect...

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Abstract

The invention relates to an engine exhaust pressure electronic waveform detection and identification method and system, and belongs to the technical field of automobile detection and maintenance equipment manufacture. The system comprises an exhaust pressure sensor, a data processing unit and a display unit, the exhaust pressure sensor is connected with the data processing unit, the exhaust pressure sensor is used for transmitting electronic signals output by the exhaust pressure sensor to the data processing unit, and the data processing unit performs operation processing according to the engine exhaust pressure electronic waveform detection and recognition method; and the data processing unit is further connected with the display unit and used for displaying an operation result through the display unit in a terminal mode, the displayed information is used for analyzing operation characteristics, engine performance or fault causes of an engine, and sensor signals can be subjected to wireless transmission, cloud processing, APP diagnosis and the like. According to the engine exhaust pressure electronic waveform detection and identification method and system, quantitative detectionand waveform analysis are carried out on exhaust pressure waves, the performance of the engine is effectively, accurately and comprehensively detected and diagnosed, and the technical level of automobile maintenance operation is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile inspection and maintenance equipment manufacturing, and in particular relates to a method and system for detecting and identifying electronic waveforms of engine exhaust pressure. Background technique [0002] With the advancement of science and technology and the development of human social transportation, automobiles have become a necessary means of transportation for social production and people's lives. [0003] The running performance of the automobile engine is directly related to the driving performance and exhaust emission performance of the vehicle. With the increase of the mileage of the engine and the vehicle, many technical problems during the use of the engine show certain characteristics in the exhaust airflow. However, the current automobile maintenance and inspection and maintenance industries generally do not have a test device for detecting engine exhaust waveforms, nor do the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N11/00G01M15/02G06K9/00
CPCF01N11/002G01M15/02G06F2218/08Y02T10/40
Inventor 张明芬
Owner 广东唯普汽车科技股份有限公司
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