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Sheathed-element glow plug

A glow plug and rod-shaped technology, which is applied to heating element materials, lighting and heating equipment, combustion ignition, etc., can solve the problems of excessive current, damage, and destruction of heating body materials in heating devices, and achieve simplified operation and prevent damage Effect

Inactive Publication Date: 2011-06-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, especially in the workshop or during function tests, there is also the danger that excessive currents will flow through the heating device due to improper operation, and the material of the heating element will be damaged or destroyed.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0015] figure 1 A schematic view of an exemplary embodiment of a rod-shaped glow plug 1 is shown. The rod-shaped glow plug 1 can be specially designed as a rod-shaped glow plug 1 for an air-compressed, self-ignition internal combustion engine. During operation, the heating body 2 of the glow plug 1 protrudes with its combustion chamber-side end 3 at least partially into the combustion chamber of the internal combustion engine. For pre-chamber engines and swirl chamber engines, the heating body 2 can extend into the pre-chamber or swirl chamber; for direct fuel injection engines, the heating body then extends into the combustion chamber of the engine. The rod-shaped glow plug 1 according to the invention is also suitable for other applications.

[0016] The glow plug 1 has a housing 4 which preferably consists of a metallic material. On this housing 4 there is an external thread 5 by means of which the glow plug 1 can be screwed into a bore of an internal combustion engine o...

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Abstract

The invention relates to a sheathed-element glow plug (1) which is designed to be fitted into a chamber of an air compression type, self-igniting internal combustion engine. Said sheathed-element glow plug (1) comprises a connection element (15) which is guided through a housing (4), and a heating body (2) which is connected to the housing (4). The heating body (2) is electrically connected to the connection element (15) and also to the housing (4). The inventive device also comprises a circuit carrier (25) which is arranged inside the housing (4) and which is electrically connected to the connection element (15) and to the housing (4). Components can be arranged on the circuit carrier (25) and are protected inside the housing (4) in relation to the surroundings.

Description

technical field [0001] The invention relates to a rod-shaped glow plug arranged in a combustion chamber of an internal combustion engine. In particular, the invention relates to a rod-shaped glow plug for an air-compressing self-ignition internal combustion engine. Background technique [0002] A ceramic rod-shaped glow plug which is placed in the combustion chamber is known from DE 19844347 A1. This known rod-shaped glow plug has a ceramic heater which is electrically conductively connected on the one hand to the housing and on the other hand to the terminal. By applying a voltage across the terminals, the ceramic heater is heated, thereby warming the air flowing through the heater. [0003] A disadvantage of the rod-shaped glow plug known from DE 19844347 A1 is that reliable operation is only possible in combination with a control device adapted to the rod-shaped glow plug. This adaptation must be done by trained professionals. Furthermore, reference must be made to a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/14F23Q7/00
CPCF23Q7/001H05B3/14
Inventor S·埃恩斯特
Owner ROBERT BOSCH GMBH
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