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Extension-type spark plug

一种火花塞、细长的技术，应用在火花塞领域，能够解决增加制造过程成本、制造和维修后勤问题、复杂设计要求改造指示等问题，达到增加公差极限、使用寿命增加的效果

Inactive Publication Date: 2011-07-13
FEDERAL MOGUL IGNITION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a spark plug design with multiple separate parts causes logistical problems for manufacture and repair in addition to adding cost to the manufacturing process
Additionally, more complex designs require modifications to indicate
In addition, this design with multiple separate parts requires field assembly and, therefore, reduces reliability

Method used

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  • Extension-type spark plug
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Examples

Experimental program
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Embodiment Construction

[0012] Referring to the drawings in more detail, FIG. 1 shows a cross-sectional view of an elongated spark plug 10 constructed in accordance with a presently preferred embodiment of the present invention. The spark plug 10 is of the type used in industrial engines and other specific applications where access to the spark plug 10 for repair and replacement purposes is extremely limited. The spark plug 10 includes a mounting housing or tube 12 made of a metallic material, such as stainless steel or some alloy steel. Mounting duct 12 houses a lower assembly, generally indicated at 14 , and an upper assembly, generally indicated at 16 . Both lower assembly 14 and upper assembly 16 are at least partially made of a dielectric material, such as ceramic, and include a lower dielectric insulator 18 and an upper dielectric insulator 20, respectively. The lower insulator 18 houses an ignition electrode 22 adjacent a ground electrode 24 with a spark gap 26 therebetween. The upper assemb...

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Abstract

An extension-type spark plug includes an upper terminal stud and a lower terminal stud axially spaced from one another in electrical communication with one another. An upper tubular insulator having a through cavity surrounds at least a portion of the upper terminal stud. A lower insulator constructed of a separate piece of material from the upper insulator has a through cavity surrounding at least a portion of the lower terminal stud. A spring member is disposed between the upper terminal stud and the lower terminal stud and biases the upper terminal stud and the lower member away from one another. The spring member allows the upper terminal stud to move axially under an externally applied force sufficient to overcome the bias imparted by the spring member and maintains electrical communication between said upper terminal stud and said lower terminal stud.

Description

[0001] Related application reference [0002] This application claims the benefit of US Provisional Application No. 61 / 089,107, filed August 15, 2008, which is hereby incorporated by reference in its entirety. technical field [0003] This invention relates to spark plugs for igniting combustion gases within the combustion chamber of an internal combustion engine, and more particularly to extension spark plugs for use in applications with limited space. Background technique [0004] Spark plugs are used in various internal combustion engine applications and are configured with other accessories to fit in specific operating environments. For example, in a particular engine application, the depth of the hole in the engine that receives the spark plug may require the use of a separate spark plug extension to connect the spark plug to the spark plug wire. While the design for additional extensions generally serves its intended purpose, problems remain. For example, spark plug ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T13/20H01T13/38
CPCH01T13/40H01T13/04H01T13/20H01T13/38
Inventor 凯文·L·米勒理查德·E·卡拉汉
Owner FEDERAL MOGUL IGNITION
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