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

High-speed large-stroke direct-acting type piezoelectric valve

A large stroke, piezoelectric valve technology, applied in valve details, multi-port valves, valve devices, etc., can solve the problems of small movement displacement of the valve core and insufficient flow performance, and achieve guaranteed displacement magnification and efficient displacement magnification. , to ensure the effect of fast closing

Active Publication Date: 2020-02-18
WUHAN UNIV OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a high-speed and large-stroke direct-acting three-way piezoelectric valve to achieve high-precision and large-flow control in view of the defects of insufficient flow performance and small displacement of the valve core in the prior art

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
  • High-speed large-stroke direct-acting type piezoelectric valve
  • High-speed large-stroke direct-acting type piezoelectric valve
  • High-speed large-stroke direct-acting type piezoelectric valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Such as figure 1 As shown, the present invention provides a high-speed large-stroke direct-acting two-position three-way piezoelectric valve, including a two-position three-way valve structure 1, piezoelectric ceramics and 2 hydraulic amplifiers 3 mechanisms, through which the hydraulic amplification mechanism 3 The small displacement of the piezoelectric ceramic 2 is transformed into a large displacement of the inner cone spool 14 of the two-position three-way valve structure 3 . Because the displacement of the piezoelectric ceramic 2 is very small, only micron level, the ordinary piezoele...

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 discloses a high-speed large-stroke direct-acting type two-position three-way piezoelectric valve. The piezoelectric valve comprises a two-position three-way valve structure, a piezoelectric ceramic and a hydraulic amplification mechanism, wherein the small displacement of the piezoelectric ceramic is converted into the large displacement of an inner cone valve core of the two-position three-way valve structure through the hydraulic amplification mechanism; the hydraulic amplification mechanism adopts an arc surface transition closed type hydraulic cavity, a large proportional piston is arranged on the large end face of the hydraulic cavity and is connected with the piezoelectric ceramic, and a small proportional piston is arranged on the small end face of the hydraulic cavity and is connected with the inner cone valve core of the two-position three-way valve structure; and an outer valve core is arranged outside the inner cone valve core, a spring is arranged between theother end of the inner cone valve core and the end part of the two-position three-way valve structure, and the spring is in a free state when the piezoelectric ceramic is not powered on. According tothe piezoelectric valve, a high-efficiency displacement amplification factor can be realized, the reset of the inner cone valve core is accelerated, and rapid closing of the piezoelectric valve is ensured.

Description

technical field [0001] The invention relates to the technical field of internal combustion engine engineering, in particular to a high-speed and large-stroke direct-acting three-way piezoelectric valve. Background technique [0002] At present, the application of fuel injection system for diesel engines has reduced fuel consumption and emissions of diesel engines, and its key component, the solenoid valve, as the actuator of the common rail fuel injection system, is to precisely control and adjust when to inject fuel, how much to inject and how much to inject. Critical components where the oil rate varies with specific operating conditions. The working performance of the solenoid valve is closely related to the working state of the fuel injection system, and is a key factor affecting the power output, lower fuel consumption and emission effects of the diesel engine. At present, the diesel fuel injection system has high requirements for high-speed, large-flow, and large-stro...

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 Applications(China)
IPC IPC(8): F16K11/044F16K31/02F16K31/124F16K31/72
CPCF16K11/044F16K31/124F16K31/1225F16K31/004
Inventor 贺玉海张波伦丁鹏郑力吴煜王菘波
Owner WUHAN UNIV OF TECH
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