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

Radiofrequency plasma spark plug

A radio frequency plasma and spark plug technology, applied in the field of spark plugs, can solve the problems of difficult control of ignition of lean fuel mixture, and achieve the effect of reducing possibility and reducing wear and tear

Inactive Publication Date: 2007-10-17
RENAULT SA
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, ignition of lean fuel mixtures is difficult to control

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
  • Radiofrequency plasma spark plug
  • Radiofrequency plasma spark plug
  • Radiofrequency plasma spark plug

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The spark plug 1 of FIG. 1 is a spark plug developed by the applicant's company as a spark plug for generating plasma. This spark plug is included in a patent application that has not yet been published on the filing date of the present application.

[0045] This spark plug comprises a cylindrical central electrode 7 with an axis of symmetry D, the part of which is called the inner part, arranged inside and at some distance from the annular housing 3 having the axis D Cylindrical tube shape.

[0046] An annular insulating element is also partly arranged inside the annular casing, surrounding said central electrode, thereby separating the casing from the central electrode 7 . The insulating element, the central electrode and the housing 3 are rotationally symmetrical elements about the axis D. The center electrode 7 has an uncovered portion 16 , ie a portion not surrounded by the electrically insulating element 10 and the housing 3 , which is arranged inside the combus...

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 concerns a so-called radiofrequency plasma spark plug (1) designed to equip a combustion chamber (2) comprising: an annular shell (3) with a main axis D; a central electrode (7) made of a second conductive material, extending along the main axis D and including an inner portion (8) arranged inside said annular shell (3) and an outer portion (9) arranged outside said annular shell (3); an annular electrically insulating part (10) extending at least about the inner portion (8) of the central electrode (7) so as to be interposed between the shell (3) and the electrode (7), said insulating part (10) only covering part of the outer portion (9) of the central electrode (7). The insulating part (10) having an annular flange (11) concealing the entire circular terminal surface (6) of the shell relative to the uncovered part (16) of the electrode (7).

Description

technical field [0001] The present invention generally relates to a radio frequency plasma spark plug. [0002] More particularly, the invention relates to a spark plug, referred to as a radio frequency plasma spark plug, fitted in the combustion chamber of an internal combustion engine and comprising: [0003] - an annular housing with a main axis D, formed from a first electrically conductive material and having first and second ends and an end circular surface with a main axis of symmetry D at the first end of said housing; [0004] - a central electrode, formed of a second electrically conductive material, extending along the main axis D and comprising an inner portion disposed inside said annular housing and an outer portion disposed outside said annular housing, with a second end of the housing the outer portion is closer to the first end than; [0005] - an annular electrically insulating element extending around at least the inner portion of the central electrode so ...

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): H01T13/50H01T13/52
CPCH01T13/50H01T13/52
Inventor X·雅弗勒齐克A·阿涅雷
Owner RENAULT SA
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