Vehicle engine cylinder head valve airtightness detection method

A vehicle engine and airtight detection technology, which is applied in fluid tightness testing, machine/structural component testing, and electrical device testing of fluid tightness, etc., to achieve fast detection speed and high detection accuracy

Inactive Publication Date: 2018-10-12
HUBEI SAIENSI SCI & TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for detecting the airtightness of the cylinder head valve of the vehicle engine to solve the technical problem of improving the detection effect of the airtightness of the cylinder head valve of the engine

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
  • Vehicle engine cylinder head valve airtightness detection method
  • Vehicle engine cylinder head valve airtightness detection method
  • Vehicle engine cylinder head valve airtightness detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other ...

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 relates to the technical field of engine cylinder head detection, and particularly relates to a vehicle engine cylinder head valve airtightness detection method comprising the steps thatstep S1: the electromagnetic signal values of the electromagnetic signal receivers in the air inlet passages and the air exhaust passages of the standard cylinder head and multiple unqualified cylinder heads of which the leakage rate is known are recorded in turn; step S2: a binary linear regression correlation between the leakage rate and the electromagnetic signal value is established accordingto the electromagnetic signal value of each cylinder head and the corresponding leakage rate value measured in the step S1; and S3: the electromagnetic signal values of the electromagnetic signal receivers in the air inlet passage and the air exhaust passage of the cylinder head to be measured are substituted in the binary linear regression correlation so as to obtain the air leakage rate of thecylinder head valve according to the binary linear regression correlation.

Description

technical field [0001] The invention relates to the technical field of engine cylinder head detection, in particular to an airtight detection method for a vehicle engine cylinder head valve. Background technique [0002] The engine cylinder head, commonly known as the cylinder head, forms the combustion chamber together with the cylinder and piston. The cylinder head is a complex casting with valve seats, air passages, water holes, injector or spark plug mounting holes, swirl chambers, and more. [0003] The valve in the cylinder head is specially responsible for inputting air into the engine and discharging the exhaust gas after combustion. From the structure of the engine, it is divided into intake valve and exhaust valve. The role of the intake valve is to draw air into the engine and mix it with fuel for combustion; the role of the exhaust valve is to discharge the burned exhaust gas and dissipate heat. [0004] The airtightness of the valve is very important. The exi...

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): G01M3/40
CPCG01M3/40G01M3/007
Inventor 熊鸿斌杨登明罗恒孙国强李庆磊张宇航
Owner HUBEI SAIENSI SCI & TECH
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