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Pressure measuring glow plug

A glow plug and pressure technology, which is applied in the field of combustion chamber pressure devices and pressure measurement glow plugs, can solve problems such as the difficulty of compensating for component shape defects, and achieve cost-effective and easy-to-implement effects

Inactive Publication Date: 2012-11-28
BORGWARNER BERU SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compensating for shape defects of components is also very difficult

Method used

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  • Pressure measuring glow plug
  • Pressure measuring glow plug

Examples

Experimental program
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Embodiment Construction

[0022] figure 1 An exemplary embodiment of a pressure measuring glow plug is shown. The pressure-measuring glow plug 10 shown comprises a tubular body 6 as housing, from which a heating element 5 protrudes. The housing has an external thread 11 for screwing the glow plug into a threaded bore of the diesel engine. The thermal head 5 can move axially in the tubular body 6 . The higher the pressure of the combustion chamber, the deeper the electric heating head 5 is pushed into the tubular body 6, and the more it is pressed against the figure 2 Sensing element shown.

[0023] A detailed schematic of the internal design of the pressure-measuring glow plug based on, figure 2 A method for producing such a device for determining the combustion chamber pressure is described.

[0024] figure 2 The shown tubular body 6 encloses the rod-shaped heating element 5 . The sensing element 4 is fixed or supported on the end surface of the heating head 5 inside the tubular body, so as ...

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PUM

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Abstract

The invention relates to a device for determining the combustion chamber pressure. Said device comprises a tubular base (6), a glow filament (5) which projects from the tubular base (6), and at least one sensor element (4) arranged in the tubular base (6). The invention is characterized in that the sensor element (4) is inserted between a front face of the glow filament (6) and a prestressing element (3) that is welded to the tubular base (6).

Description

technical field [0001] The invention relates to a device for determining the combustion chamber pressure, in particular of an internal combustion engine, and to a method for producing such a device. In particular, the invention relates to a pressure measuring glow plug comprising a tubular body as a housing, a heating head protruding from the tubular body, and a sensor for measuring the combustion chamber pressure present at the heating head provided in the tubular body. sensing element. Background technique [0002] A glow plug having the features described above is known from patent document WO 2005 / 114054 A1. [0003] A similar combustion chamber pressure sensor is known, for example, from patent document DE 10343521, where a pressure measuring glow plug is described for a diesel engine, comprising a plug body insertable into a cylinder of a diesel engine, a heating rod arranged in the plug body and a pressure sensor , the pressure sensor is arranged between the heating...

Claims

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Application Information

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IPC IPC(8): F23Q7/00
CPCF23Q7/001F23Q2007/002F23Q2007/004F02P19/028
Inventor 程越马丁·阿盖尔
Owner BORGWARNER BERU SYST