GB2132272A - Glow plug for a diesel engine - Google Patents
Glow plug for a diesel engine Download PDFInfo
- Publication number
- GB2132272A GB2132272A GB08333720A GB8333720A GB2132272A GB 2132272 A GB2132272 A GB 2132272A GB 08333720 A GB08333720 A GB 08333720A GB 8333720 A GB8333720 A GB 8333720A GB 2132272 A GB2132272 A GB 2132272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- glow plug
- sleeve
- plug
- electrical connector
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 230000037431 insertion Effects 0.000 claims abstract description 19
- 238000003780 insertion Methods 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 7
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000006378 damage Effects 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
- Spark Plugs (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
A gas tight flame glow plug is provided for use in the suction inlet pipe of a diesel engine for facilitating starting. The seal between a sleeve (2) and a casing (1) is achieved by means of a ceramic insertion piece (3) and mechanical or chemical seals (4). The flame glow plug can be provided with a single electrical connector (5) or a pair of connectors. <IMAGE>
Description
SPECIFICATION
Glow plug for a diesel engine
This invention relates to a flame glow plug for a diesel engine to improve starting. Such a glow plug is installed in the fuel inlet manifoid or pipe of the engine and belongs to F02P 19/02 class according to the International Patent
Classification.
In known versions of flame glow plugs the connection between the inner parts and the casing is achieved by means of a supporting metal washer and an insulating spacer. The metal washer has a notch, over which the electrical contact is partly led out from the plug, and positioning dimples or projections for the insulating spacer. The insulating spacer also has several notches for guiding the electrical contact, positioning and preventing the middle part from rotation. The movable nature of both connecting parts does not provide a gas tight seal between the plug parts. Because of the metallic linkage between the sleeve (the middle part) and the casing, only a single electrical connector is possible on the plug, i.e., the other pole is connected directly to the plug casing.Any thermal overload of the plug can possibly damage the insulating space since it is made of a material less resistant to temperature. This results in loosening between the electrical connector and other plug parts and subsequently in a short circuit and destruction of the plug.
There is thus a need for a generally improved flame glow plug which is gas tight which can be produced in a bi polar or two contact version.
According to the present'invention there is provided a glow plug for a diesel engine, having an electrical connector, a casing, a sleeve housed at least partially in the casing and a ceramic insertion piece placed between the casing and the sleeve and sealed thereto with mechanical or chemical seals in a gas tight manner.
For a better understanding of the present invention, and to show how the same may be carried into effect, reference will now be made, by way of example to the accompanying drawings, in which: Figure 1 is a part vertical sectional view through a single electrical connector glow plug according to one embodiment of the invention, and
Figure 2 is a view similar to that of Figure 1 of a two electrical connector glow plug according to another embodiment of the invention.
A single electrical connector flame glow plug according to one embodiment of the invention as shown in Figure 1 is gas tight and includes a casing 1 which is, in respect to its dimensions and form, conventional thus permitting speedy replacement of an old conventional glow plug with a glow plug according to the invention. Between a sleeve 2 and the casing 1 a ceramic insertion piece 3 is inserted shaped to conform to the shape of the adjoining surfaces of the casing 1 tand the sleeve 2. In the joints between the casing 1, sleeve 2 and the ceramic insertion piece 3 are inserted seals 4 that can be mechanical or chemical. A single electrical connector 5 is led over the seal 4 through the ceramic insertion piece 3 and connected to one end of a spiral glow element 6 which is connected at its other end to the casing 1.Thus the parts of the plug are sealed to one another in gas-tight manner.
The construction of a gas tight two electrical connector flame glow plug as shown in Figure 2 has been made possible by the use of the ceramic insertion piece 3 and seals 4 providing the possibility of sealing joints between the casing 1 and the sleeve 2. The assembly of the casing 1, the sleeve 2 and the ceramic insertion piece 3 is similar to that of the unipolar version glow plug of
Figure 1, with an additional electrical connector 5a connected directly to the sleeve 2. In this embodiment the other end of the spiral glow element 6 is not connected to the casing 1 but to an extended plug portion 7 of the sleeve 2. When this version of the glow plug is used, the fuel inlet should be non-metallic or otherwise insulated from the engine crankcase or cylinder head.
The gas tight flame glow plug according to the invention provides improved sealing between casing and sleeve, which is particuiarly suitable and applicable for the new turbo type diesel engines with an increased air pressure in the suction inlet pipe where the plug is mounted. In addition, the use of the ceramic insertion piece also allows a bipolar version of the flame glow plug to be produced.
1. A glow plug for a diesel engine having an electrical connector, a casing, a sleeve housed at least partialiy in the casing and a ceramic insertion piece placed between the casing and the sleeve and sealed thereto with mechanical or chemical seals in a gas tight manner.
2. A glow plug according to claim 1, having a further electrical connector connected to the sleeve and a spiral glow element connected at one end to a plug portion of the sleeve.
3. A glow plug according to claim 1, wherein
the electrical connector is connected through the ceramic insertion piece to one end of a spiral glow element which is connected at its other end to the casing.
4. A glow plug for a diesel engine, substantially as hereinbefore described with reference tq Figure
1 or Figure 2 of the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. A glow plug for a diesel engine having an electrical connector, a casing, a sleeve housed at least partialiy in the casing and a ceramic insertion piece placed between the casing and the sleeve and sealed thereto with mechanical or chemical seals in a gas tight manner.
2. A glow plug according to claim 1, having a further electrical connector connected to the sleeve and a spiral glow element connected at one end to a plug portion of the sleeve.
3. A glow plug according to claim 1, wherein
the electrical connector is connected through the ceramic insertion piece to one end of a spiral glow element which is connected at its other end to the casing.
4. A glow plug for a diesel engine, substantially as hereinbefore described with reference tq Figure
1 or Figure 2 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| YU2851/82A YU43813B (en) | 1982-12-22 | 1982-12-22 | Gasproof glowing plug |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8333720D0 GB8333720D0 (en) | 1984-01-25 |
| GB2132272A true GB2132272A (en) | 1984-07-04 |
| GB2132272B GB2132272B (en) | 1986-10-01 |
Family
ID=25558883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08333720A Expired GB2132272B (en) | 1982-12-22 | 1983-12-19 | Glow plug for a diesel engine |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE3346210A1 (en) |
| FR (1) | FR2538459B1 (en) |
| GB (1) | GB2132272B (en) |
| IT (1) | IT1160235B (en) |
| YU (1) | YU43813B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB861275A (en) * | 1958-11-29 | 1961-02-15 | Bosch Gmbh Robert | Improvements in or relating to glow plugs |
| GB876300A (en) * | 1958-11-13 | 1961-08-30 | Bosch Gmbh Robert | Improvements in or relating to glow plugs for internal combustion engines |
| GB1177271A (en) * | 1966-01-28 | 1970-01-07 | Bosch Gmbh Robert | Improvements in Sparking Plugs |
| GB1447964A (en) * | 1972-12-07 | 1976-09-02 | Cav Ltd | Starting aids for combustion engines |
| EP0040997A1 (en) * | 1980-05-22 | 1981-12-02 | AlliedSignal Inc. | Method of making a pressure tight seal for a glow plug |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE693786C (en) * | 1937-02-16 | 1940-07-18 | Boris Svistounoff | Ignition device |
| GB995191A (en) * | 1961-06-12 | 1965-06-16 | Cav Ltd | A device for aiding the starting of internal combustion engines |
| DE1207147B (en) * | 1962-12-22 | 1965-12-16 | Beru Werk Ruprecht Gmbh Co A | Starting aid for internal combustion engines |
| US3400699A (en) * | 1966-06-08 | 1968-09-10 | Ford Motor Co | Preheater unit for an internal combustion engine |
| JPS5137085Y2 (en) * | 1971-04-20 | 1976-09-10 | ||
| DE2201441A1 (en) * | 1972-01-13 | 1973-07-19 | Bosch Gmbh Robert | GLOW PLUG AS A STARTING AID FOR DIESEL AND PETROL ENGINES |
| DE7830985U1 (en) * | 1978-10-18 | 1979-02-01 | Beru-Werk Albert Ruprecht Gmbh & Co Kg, 7140 Ludwigsburg | GLOW PLUG |
| US4418661A (en) * | 1981-02-07 | 1983-12-06 | Robert Bosch Gmbh | Glow plug, particularly for diesel engine |
-
1982
- 1982-12-22 YU YU2851/82A patent/YU43813B/en unknown
-
1983
- 1983-12-19 GB GB08333720A patent/GB2132272B/en not_active Expired
- 1983-12-21 DE DE19833346210 patent/DE3346210A1/en active Granted
- 1983-12-21 FR FR8320491A patent/FR2538459B1/en not_active Expired
- 1983-12-22 IT IT68340/83A patent/IT1160235B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB876300A (en) * | 1958-11-13 | 1961-08-30 | Bosch Gmbh Robert | Improvements in or relating to glow plugs for internal combustion engines |
| GB861275A (en) * | 1958-11-29 | 1961-02-15 | Bosch Gmbh Robert | Improvements in or relating to glow plugs |
| GB1177271A (en) * | 1966-01-28 | 1970-01-07 | Bosch Gmbh Robert | Improvements in Sparking Plugs |
| GB1447964A (en) * | 1972-12-07 | 1976-09-02 | Cav Ltd | Starting aids for combustion engines |
| EP0040997A1 (en) * | 1980-05-22 | 1981-12-02 | AlliedSignal Inc. | Method of making a pressure tight seal for a glow plug |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2538459A1 (en) | 1984-06-29 |
| IT1160235B (en) | 1987-03-04 |
| DE3346210A1 (en) | 1984-06-28 |
| YU285182A (en) | 1987-08-31 |
| GB2132272B (en) | 1986-10-01 |
| YU43813B (en) | 1989-12-31 |
| DE3346210C2 (en) | 1987-06-04 |
| GB8333720D0 (en) | 1984-01-25 |
| IT8368340A0 (en) | 1983-12-22 |
| FR2538459B1 (en) | 1989-06-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19991219 |