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Prechamber sparkplug

A spark plug and pre-combustion chamber technology, applied in the field of pre-combustion chamber spark plugs, can solve the problem of unadjustable ground electrodes, and achieve the effects of a simple manufacturing method, stable ignition timing, and extended running time

Inactive Publication Date: 2014-11-05
MOTOREN UND TURBINEN UNION MUNCHEN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the ring-shaped ground electrode is not adjustable (even if the prechamber is accessible)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] figure 1 A prechamber spark plug 1 with an annular ground electrode 3 in the region of the prechamber 5 is shown as a sectional view. The general structure and the general function of the pre-chamber spark plug are assumed to be known. In the region of the prechamber 5 , the prechamber spark plug 1 is formed from a central center electrode 2 , an annular ground electrode 3 , a prechamber cover 4 which forms the prechamber 5 , and a housing 6 . The center electrode 2 is electrically insulated from the housing 6 . The prechamber cover 4 is connected to the housing 6 of the prechamber spark plug 1 . In the prechamber cover 4 there is at least one through opening 9 through which the gas-air mixture enters the prechamber 5 and after its ignition the flame front spreads into the main combustion chamber. The center electrode 2 and the ground electrode 3 are arranged in the pre-chamber 5 in such a manner that they are not accessible from the outside. The ground electrode 3 ...

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PUM

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Abstract

A pre-chamber sparkplug is suggested with a central electrode, with at least one ground electrode, which is distanced from the central electrode forming a spark gap, and with at least one transfer bore in a pre-chamber cap. The ground electrode comprises an internal circumferential area, which faces the central electrode, and an external circumferential area, which faces away from the central electrode. The internal circumferential area of the ground electrode shows a concave progression in the longitudinal direction of the pre-chamber sparkplug, subjected to a tensile force, and the external circumferential area shows a convex progression in the longitudinal direction of the pre-chamber sparkplug, subjected to a pressure.

Description

technical field [0001] The invention relates to a prechamber spark plug according to the preamble of claim 1 . Background technique [0002] The prechamber spark plug is also formed from a central center electrode and at least one ground electrode which is arranged at a distance from the center electrode forming a spark gap. The center electrode and the ground electrode are arranged within the prechamber cover. The compressed gas-air mixture flows into the prechamber through one or more through holes in the prechamber cover. After the mixture has been ignited, the flame front then diffuses from the pre-chamber through the through holes into the main combustion chamber. [0003] DE 101 44 976 A1 thus shows, for example in a first embodiment, a prechamber spark plug with an annular ground electrode, which is fastened to the prechamber cover via a holder. The ground electrode has an inner peripheral surface and an outer peripheral surface in the longitudinal direction of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T13/32H01T13/54
CPCH01T13/32H01T13/467H01T21/02H01T13/54F02B19/12Y02T10/12
Inventor A.埃恩斯特
Owner MOTOREN UND TURBINEN UNION MUNCHEN GMBH