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Composite spark plug

An ignition device, engineering polymer technology, applied in the field of spark plugs, can solve the problem of reducing the temperature of the ground electrode, undeclared, etc.

Inactive Publication Date: 2009-07-08
ENERPULSE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] US Patent No. 6,819,030 for spark plugs claims to reduce the temperature of the ground electrode, however, does not claim to reduce electrode corrosion or increase spark energy

Method used

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Examples

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Embodiment Construction

[0047] See now the accompanying drawings, especially figure 1 , the spark plug or ignition device used in the spark ignition internal combustion engine of the present invention is generally shown as 1 . The spark plug or ignition device 1 consists of a preferably metallic case or housing 15 having a generally cylindrical base 44 on which external threads 18 may be formed for use with a spark ignition internal combustion engine ( not shown) to the cylinder head (not shown). The cylindrical base 44 of the spark plug housing has a generally flat plane perpendicular to the longitudinal axis of the spark plug 1, on which plane the ground electrode 16 is attached, preferably by conventional welding methods. In one embodiment of the invention, the ground electrode 16 has a preferably rounded tip 45 of a Rhenium / Tungsten sintered compound, which prevents corrosion of the electrode 16 due to high power discharges, as further disclosed herein.

[0048]The spark plug or ignition devic...

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Abstract

A composite ignition device includes a positive electrode having a tip formed thereon that is bonded to a first insulator to form a firing cone assembly. A second insulator having a negative capacitive element embedded therein is attached to the firing cone assembly. A positive capacitive element is disposed in the second insulator and is separated from the negative capacitive element by the second insulator. The positive capacitive element is coupled to the positive electrode. The positive and negative capacitive elements form a capacitor. A resistor is coupled to the positive capacitive element. An electrical connector is coupled to the resistor and attached to the second insulator. A shell includign a negative electrode having a tip is attached to the second insulator and the firing core assembly and coupled to the negative capacitive element. The negative electrode tip is spaced apart from the positive electrode tip.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit to US Provisional Patent Application Serial No. 60 / 799,926, filed March 12, 2006, entitled "Composite Spark Plug," the specification of which is hereby incorporated by reference. Background technique [0003] This invention relates to spark plugs for igniting fuel in internal combustion spark ignition engines. Modern spark plug technology dates back to the early 1950s without any significant design changes other than the material and construction of the spark gap electrode. These relatively new electrode materials, such as platinum and iridium, have been incorporated into the design for extended life in order to mitigate the corrosion problems that are common to all spark plug electrodes. Although these materials will reduce the typical low power discharge (peak discharge current less than 1 amp) spark plug electrode corrosion and can run the required 10 9 cycle, but cannot ...

Claims

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Application Information

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IPC IPC(8): H01T13/00F02P13/00
Inventor 路易斯·S·卡米莉
Owner ENERPULSE INC
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