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Heater plug having a metal lug

A preheating and spark plug technology, applied in lighting and heating equipment, engine incandescent ignition, incandescent ignition, etc., can solve the problem of finger preheating performance degradation

Active Publication Date: 2014-07-09
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve these problems, a new metal heating finger of shortened length could be considered, but the design and manufacturing cost of such a finger, as well as the possible reduction in the preheating performance of the finger, led to abandoning this solution

Method used

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  • Heater plug having a metal lug
  • Heater plug having a metal lug
  • Heater plug having a metal lug

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] figure 1 The glow plug according to the invention is shown in longitudinal section. Conventionally, the glow plug comprises a body 2 , a finger 4 , a core 6 , and a piezoelectric sensor 8 .

[0032] In the remainder of this description, the pre-heating spark plug will be described in a position where, exhibiting a generally vertical longitudinal direction, the fingers 4 protrude out of the body 2 at the lower part of the spark plug. Accordingly, "lower" and "upper" and similar adjectives used hereinafter refer to this spark plug position.

[0033] Thus, the lower part of the spark plug is intended to be located in the cylinder of the internal combustion engine, while the upper part of the spark plug, also referred to as spark plug head 10 , is intended to protrude out of the cylinder head of said internal combustion engine.

[0034] exist figure 1 In , the main body 2 is schematically shown. The body is a tubular body. exist figure 1 , the body has a cylindrical s...

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PUM

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Abstract

The invention relates to a preheating spark plug. The glow plug comprises: a tubular body (2); a finger (4) fitted inside said tubular body (2) and protruding out of said body at its end and • a pressure sensor (8); • a membrane (28) extending between said body (2) and said finger (4), allowing a connection between said finger (4) and said body (2) The relative longitudinal movement between them. The pressure sensor (8) is arranged between a first support member (38) and a second support member (40) on the one hand, wherein the first support member communicates with the first support member through a first tubular member (20, 20') The fingers (4) are connected in the vicinity of the membrane (28), while the second supporting member is connected to the main body (2) through a second tubular member (22).

Description

technical field [0001] The invention relates to a glow plug comprising a force sensor for measuring the pressure inside a cylinder of an internal combustion engine. Background technique [0002] In internal combustion engines, especially in diesel engines, each cylinder generally includes a pre-heating spark plug which allows heating of the combustion chamber of said cylinder, in particular when the engine is started. This preheated spark plug is placed in a tapped hole that passes through the cylinder head of the engine. This glow plug comprises on the one hand a body provided with an external thread, and on the other hand a finger for extending in the combustion chamber, wherein said external thread is capable of cooperating with an internal thread provided in a hole, in said finger A preheated electrode is placed in it. [0003] It is known to incorporate force sensors, most often piezoelectric sensors, in such glow plugs. In fact, it is noted that knowing the value of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23Q7/00
CPCF02P19/028F23Q2007/002F23Q7/001
Inventor A.拉蒙
Owner VTESCO TECH GMBH