CN2309432Y - Ceramic electric heating plug - Google Patents
Ceramic electric heating plug Download PDFInfo
- Publication number
- CN2309432Y CN2309432Y CN96230894U CN96230894U CN2309432Y CN 2309432 Y CN2309432 Y CN 2309432Y CN 96230894 U CN96230894 U CN 96230894U CN 96230894 U CN96230894 U CN 96230894U CN 2309432 Y CN2309432 Y CN 2309432Y
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- CN
- China
- Prior art keywords
- electric heating
- ceramic
- heating
- plug
- heating wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a ceramic electric heating plug which is an auxiliary device which assists an engine to start in a heated electrically process. The ceramic electric heating plug is composed of a casing and a heating body. Tungsten filament heating wires and ceramic material are pressed in a high temperature and sintered, which forms the heating body which is directly used for heating air which enters a combustion chamber. An electric heating wire has the advantages that the temperature can be quickly raised, and the electric heating wire can prevent the temperature from being exorbitant. The ceramic material has the advantages of high strength, high temperature resistance, corrosion resistance, etc. The service life and the reliability of the electric heating plug can be effectively improved. The performance of cold start of a diesel oil engine can be improved.
Description
The utility model relates to the auxiliary device by electrically heated method auxiliary engine starting.
For improve diesel engine cold-start performance, to divided combustion chamber diesel engine and small-sized direct injection combustion chamber diesel engine, the glow plug of auxiliary starter is installed all in the firing chamber.Traditional glow plug is the metal electric heating chamber,, is filled up magnesium oxide powder between metal shell and the heat coil and insulate on a very thin ceramic rod by the heat coil of nichrome system.In order to make the diesel engine starting of catching fire, glow plug must be switched on and be made the heating wire heating, reach 850 ℃～1000 ℃ up to the glow plug head temperature, the time that reaches this temperature is shorter, engine start is faster, but because the metal electric heating plug is behind the heating wire heating power, its heat will pass on the metal shell by the magnesia powder of insulation, therefore heating wire can not heat up too fast, otherwise can cause the excessive temperature differentials of glow plug heater inner heat silk and surface metal shell, so the starting preheating of metal electric heating plug is slow, need 20～60 seconds preheat time, when the metal shell surface temperature reached 850 ℃～1000 ℃, heating wire was often fused because temperature is too high; Simultaneously, metal shell also is melted owing to the time is long, temperature is too high; In addition, the metal electric heating plug is under high temperature, the exhaust gas corrosion condition for a long time works the easy oxide etch of metal shell.So metal electric heating plug poor reliability, working life, short, energising number of times had only about 240～1000 times.
The purpose of this utility model is the subject matter that exists at the metal electric heating plug, and intensification is slow, working life is short, poor reliability, and provides a kind of quick heating, high temperature resistant, the erosion-resisting ceramic electric heating plug of long service life, good reliability.
The purpose of this utility model is to realize by designing a heating unit assembly that integrates heating wire, glow plug shell (work head), insulating material, being about to heating wire is inlaid in the ceramic cylinder, the all-in-one-piece ceramic heating element that both directly contact, directly heat the air that enters in the firing chamber by it, be rapidly heated and reach, and temperature-rise period is rational.
Accompanying drawing is the structural representation of the utility model ceramic electric heating plug, and 1 for connecting lead 2 among the figure, is metal cap, and 3 is housing, and 4 is small casing, and 5 is ceramic heating element, and 6 is heating wire, and 7 is ceramic cylinder.
Provide the utility model most preferred embodiment in conjunction with the accompanying drawings.
The ceramic electric heating plug is made up of housing 3 and heater assembly, and housing 3 is a metal stepped shaft hollow cylinder, is shaped on screw thread on the cylindrical of big end, to be directly installed on the burning chamber of diesel engine body.Heater 5 is made up of heating wire 6, ceramic cylinder 7, and heating wire adopts tungsten filament, and its resistance value has the performance that raises and increase with temperature, after connecting power supply, the normal temperature resistance of heating wire is little, and electric current is big, quick heating, along with temperature raises, resistance increases, and electric current reduces, when resistance is increased to certain value, heat and electric current that heating wire sends no longer change, and temperature tends towards stability.Stupalith is selected silicon nitride (Si for use
3N
4).This heating wire can guarantee that glow plug reaches 850 ℃ in 10 seconds.Heating wire coiled U-shaped helical is drawn lead by two utmost points, and heating wire and stupalith carry out hot pressed sintering and fuse in hot-pressing die, to guarantee that heating wire directly contacts with stupalith, does not allow the space and exists, and realizes good heat transfer.The front end of heater 5 is the work part, be used for heating air inlet, be with small casing 4 on the cylindrical at middle part, be with metal cap 2 on the rear end, an end of lighting outlet is connected on the small casing 4, and the other end is connected on the metal cap, draw with connecting lead 1, form one with the silver-bearing copper soldering between them, be inserted in again in the little stomidium of housing 3 at last, be welded into the ceramic electric heating plug.
The utility model ceramic electric heating plug has quick heating, and it is too high to prevent to heat up, and stupalith has, and intensity height, expansion coefficient are low, high tenacity, performance such as high temperature resistant, anti-oxidant, anticorrosive, therefore can improve the working life and the reliability of glow plug effectively, and then improve the cold-start performance of diesel engine.
Claims (4)
1. ceramic electric heating plug, it is made up of housing and heater, it is characterized in that heater is inlaid in the ceramic cylinder by heating wire, the all-in-one-piece ceramic heating element that both directly contact.
2. according to the said ceramic electric heating plug of claim 1, it is characterized in that heating wire adopts tungsten filament, coiled U type helical is drawn lead by two utmost points.
3. according to claim 1 or 2 said ceramic electric heating plugs, it is characterized in that heating wire and stupalith carry out hot pressed sintering and fuse in hot-pressing die.
4. according to the said ceramic electric heating plug of claim 1, the front end that it is characterized in that heater is the work part, is with small casing on the cylindrical at middle part, and the rear end is with metal cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96230894U CN2309432Y (en) | 1996-10-16 | 1996-10-16 | Ceramic electric heating plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96230894U CN2309432Y (en) | 1996-10-16 | 1996-10-16 | Ceramic electric heating plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2309432Y true CN2309432Y (en) | 1999-03-03 |
Family
ID=33908217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96230894U Expired - Fee Related CN2309432Y (en) | 1996-10-16 | 1996-10-16 | Ceramic electric heating plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2309432Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715757B (en) * | 2004-06-29 | 2012-05-09 | 日本特殊陶业株式会社 | Glow plug |
| CN101389454B (en) * | 2005-12-29 | 2012-07-04 | 费德罗—莫格尔公司 | Method for forming layered heating element for glow plug |
| CN101983303B (en) * | 2008-04-02 | 2013-01-02 | 博格华纳贝鲁系统股份有限公司 | Pressure-measuring glow plug |
| CN103493586A (en) * | 2011-04-27 | 2014-01-01 | 京瓷株式会社 | Heater and glow plug comprising same |
| CN105298711A (en) * | 2015-11-27 | 2016-02-03 | 衡阳合力工业车辆有限公司 | Heating device for internal combustion engine |
| WO2023051276A1 (en) * | 2021-09-29 | 2023-04-06 | 重庆利迈科技有限公司 | Ceramic glow plug |
-
1996
- 1996-10-16 CN CN96230894U patent/CN2309432Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715757B (en) * | 2004-06-29 | 2012-05-09 | 日本特殊陶业株式会社 | Glow plug |
| CN101389454B (en) * | 2005-12-29 | 2012-07-04 | 费德罗—莫格尔公司 | Method for forming layered heating element for glow plug |
| CN101983303B (en) * | 2008-04-02 | 2013-01-02 | 博格华纳贝鲁系统股份有限公司 | Pressure-measuring glow plug |
| CN103493586A (en) * | 2011-04-27 | 2014-01-01 | 京瓷株式会社 | Heater and glow plug comprising same |
| CN103493586B (en) * | 2011-04-27 | 2015-11-25 | 京瓷株式会社 | Heater and there is the glow plug of this heater |
| CN105298711A (en) * | 2015-11-27 | 2016-02-03 | 衡阳合力工业车辆有限公司 | Heating device for internal combustion engine |
| WO2023051276A1 (en) * | 2021-09-29 | 2023-04-06 | 重庆利迈科技有限公司 | Ceramic glow plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |