Ignition and pressure measurement device of internal combustion engine

A measurement device, pressure technology, applied in the direction of measurement device, engine ignition, measurement of rapid changes, etc., can solve the problem of signal inferring enough reliable and accurate information, etc.

Inactive Publication Date: 2012-10-03
CONTINENTAL AUTOMOTIVE FRANCE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors have noticed that with this known device the quality of the signal received by the processing device is sometimes insufficient to deduce sufficiently reliable and precise information on pressure

Method used

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  • Ignition and pressure measurement device of internal combustion engine
  • Ignition and pressure measurement device of internal combustion engine
  • Ignition and pressure measurement device of internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Figures 1 to 3 The ignition and pressure measuring device according to the invention is shown, which in particular has a spark plug 2 , a support tube 4 and a metal housing 6 , forming a one-piece assembly.

[0031] Generally, a spark plug 2 has a center electrode 8, a ground electrode 10, an insulating stem 12 and an outer body 14, sometimes referred to as a spark plug base.

[0032] The spark plug 2 is used to generate a spark in the combustion chamber of the internal combustion engine. The spark is generated between two electrodes, a center electrode 8 and a ground electrode 10 . The central electrode 8 is mounted on one end of the insulating core rod 12 and is located inside the insulating core rod. It is supplied with high voltage current by the high voltage line described below.

[0033] An insulating mandrel 12 , usually made of ceramic, is mounted inside an outer body 14 . The outer body has an overall tubular shape with a circular cross-section. The lower...

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PUM

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Abstract

The present invention relates to an ignition and pressure measurement device comprising a spark plug (2) having: an outer body (14); a pressure sensor (34) mounted on said outer body (14) and comprising a signal output terminal (38); a supporting tube (4) nested on an upper end of the outer body and carrying electronic means (44) for processing said signal; a conductive element (46) fixed to the output terminal (38) of the pressure sensor and to a terminal for the insertion of the electronic processing means (44); and a metallic envelope (6) surrounding the supporting tube, the electronic processing means and the pressure sensor. Said envelope comprises gripping means (60) for mounting the device in a cylinder head, and is fixed, at the lower end thereof, to the outer body of the spark plug.

Description

technical field [0001] The invention relates to an ignition and pressure measuring device for an internal combustion engine. Background technique [0002] Advantageously, in an internal combustion engine, the pressure in the cylinder is known. In particular this allows better control over controlling the combustion of the engine. Thus, fuel consumption and pollutant emissions can be limited. In gasoline engines, a pressure sensor that measures the pressure in the cylinder also avoids the need for a knock detector. [0003] It is therefore known to mount pressure sensors on spark plugs. Commonly used pressure sensors are based on the piezoelectric effect. As a reminder, a spark plug typically has a center electrode, a ground electrode, an insulating stem, and an outer body, sometimes called a spark plug base. Therefore, the pressure sensor is mounted on the outside of the outer body of the spark plug. When the spark plug is installed in the cylinder head of a running en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L23/22H01T13/04
CPCH01T13/04H01T13/40G01L23/222F02P13/00G01L23/22
Inventor M·贝古B·卡梅尔
Owner CONTINENTAL AUTOMOTIVE FRANCE
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