WO2012084313A1 - Ignition coil having a coupling device - Google Patents
Ignition coil having a coupling device Download PDFInfo
- Publication number
- WO2012084313A1 WO2012084313A1 PCT/EP2011/068911 EP2011068911W WO2012084313A1 WO 2012084313 A1 WO2012084313 A1 WO 2012084313A1 EP 2011068911 W EP2011068911 W EP 2011068911W WO 2012084313 A1 WO2012084313 A1 WO 2012084313A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ignition coil
- engine block
- connection device
- electrically conductive
- housing
- Prior art date
Links
- 230000008878 coupling Effects 0.000 title abstract 4
- 238000010168 coupling process Methods 0.000 title abstract 4
- 238000005859 coupling reaction Methods 0.000 title abstract 4
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/04—Means providing electrical connection to sparking plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/12—Ignition, e.g. for IC engines
Definitions
- the present invention relates to an ignition coil for internal combustion engines with a device for connecting the ignition coil to an engine block and / or a spark plug well and a method for producing an ignition coil.
- Ignition coils in internal combustion engines in conjunction with spark plugs through a spark ensure that combustible gas or gas mixture is ignited at a predefined time.
- spark plugs through a spark For this purpose, generally arranged at a certain distance from each other electrodes are arranged in the combustion chamber and this at a given time with a
- Ignition coil in the engine block is not guaranteed.
- the chemical stress by lubricants and fuel gases, but also environmental influences and cleaning agents limit the selection of suitable materials for the production of ignition coils, in particular their housings. So far, in the case of ignition coils, electrical contacting of wires, busbars, electronic components and shielding plates by welding, soldering,
- Insulation displacement connection clamp connection, crimp connection
- the ignition coil according to the invention with the features of claim 1 has the advantage that they provide a simple, cost-effective and permanently reliable solution for connecting an ignition coil in one
- Engine block provides. According to the invention, a chip-free connection between the ignition coil and the engine block by means of an electrically conductive
- connection device provided which is also permanently elastic, low-resistance and electrically durable.
- the installation of the ignition coil by means of the connection device according to the invention is also particularly simple, since the electrical connection already takes place by the insertion of the ignition coil in the engine block and thus requires no additional steps for making the electrical connection.
- the inventive In addition, the connection between the ignition coil and the engine block is protected against ambient media and environmental influences and serves to protect against electromagnetic compatibility (EMC) by means of a
- EMC electromagnetic compatibility
- electrically conductive plastic is understood to mean a material based on a plastic, to which electrically conductive components (for example metal chips) are mixed in such a way that a required degree of charge exchange by the plastic composite can take place via this .
- electrically conductive components for example metal chips
- the ignition coil according to the invention can also be effectively secured by the connection device against rotation in the engine block and “wandering" from the engine block by the elasticity of the plastic composite for a corresponding normal force between the ignition coil and the
- Spark plug shaft wall and / or biasing device between the connecting device and ignition coil also a permanent and reliable sealing of the respective annular gap against the
- the electrically conductive plastic from which the connection device of the ignition coil is made elastic.
- a particularly reliable biasing force between the ignition coil and the wall of a spark plug shaft of an engine block can be ensured.
- different thermally induced expansions of the individual parts involved in the connection do not have such a detrimental effect on the stability of the connection, in particular the electrical contacting.
- the electrically conductive plastic from which the connection device of the ignition coil is made elastic.
- Connection device arranged to establish the electrical ground contact between the ignition coil and an engine block (M) and / or to seal a gap between the ignition coil and the wall (90) of a spark plug well (9) of the engine block (M) fluid-tight.
- Engine block of a vehicle usually corresponds electrically to the vehicle mass, in particular the contacting of the ignition coil mass with the vehicle mass via the attachment device according to the invention and the engine block is easily and reliably possible.
- Engine block of a vehicle usually corresponds electrically to the vehicle mass, in particular the contacting of the ignition coil mass with the vehicle mass via the attachment device according to the invention and the engine block is easily and reliably possible.
- Tying device made of elastic plastic composite also a permanent and reliable sealing of the respective annular gap against the
- engine and / or “engine block” is understood to mean that usually metallic engine periphery, in which the
- connection device surrounds the housing of the ignition coil at least in sections, in particular completely, in the circumferential direction.
- the attachment device is attached by means of electrically conductive adhesive to the ignition coil and / or in the engine block. Beyond a reliable electrical contacting of the ignition coil is thus also a permanent and reliable sealing of the spark plug shaft against the
- connection device has several in
- sealing lips are preferably designed to be in insertion into a substantially cylindrical cavity, in particular a
- connection device On the one hand with respect to the ignition coil housing and on the other hand against the wall of the
- spark plug shaft ensured in the engine block. This also results a permanent and reliable sealing of the spark plug shaft against the alternating pressure differences between the combustion chamber and the outside and / or the atmospheric pressure. More preferably, the attachment device is adjacent to one
- adjacent means a spatial and functional proximity
- Attachment device and high voltage outlet are made, which further by mediating the contact force when inserting the ignition coil in the
- Engine block ensures a secure electrical connection.
- Tying device manufactured as a two-component injection-molded part with the housing. Either you can first in a first step, the
- Tying device itself be made and in a second
- the housing of the ignition coil can be manufactured and, in a second step, the connection device (e.g.
- a combined (ie simultaneous) injection process of both components in only one mold can also be used with suitable process control.
- a two-component process results in a particularly effective positive connection between the components housing and connection device.
- an effective material bond is brought about by diffusion of the substances of the components into one another.
- the plastic composite of the attachment device largely comprises silicone and / or ethylene-propylene-diene monomer (EPDM) and / or a thermoplastic elastomer (TPE) and / or synthetic resin and also comprises electrically conductive constituents, in particular metal particles or graphite.
- EPDM ethylene-propylene-diene monomer
- TPE thermoplastic elastomer
- the aforementioned plastics have been found to be suitable to provide a durable and reliable seal by an adequate degree of bias the gap between the wall of the spark plug duct and the ignition coil against the alternating pressure differences between the combustion chamber and the outside and / or the atmospheric pressure to ensure.
- the plastic can be mixed in the granular state prior to processing on the one hand a certain elasticity ensuring particles and on the other hand electrically conductive particles.
- the ignition coil further includes an external magnetic core, preferably in C-shape ("C-core"), and the attachment device is configured to electrically connect the magnetic core to an engine block, whereby the electrical connection can be preferably made thereby in that a section of the attachment device is brought into contact with the C-core
- Connecting device relative to the other attachment device in the direction of the coil assembly are extended to the level of the C-core, so that the attachment device receives an asymmetrical shape. This results in a simple to manufacture and reliable connection without the need for additional parts and manufacturing steps.
- the inventive method for producing an ignition coil having the features of claim 9 provides a simple, inexpensive, permanently reliable connectable in an engine block ignition coil ready.
- the connection device On the housing of the ignition coil, the connection device by coating, in particular
- Tying device can also be the conductivity of the outside of the
- Attaching device take a higher degree than the Grundköper (the inner layers) of the connection device.
- the main body, that is to say the inner layers, of the connection device can also be designed without compromise with regard to a suitable preload between ignition coil housing and engine block. by its elasticity is not affected by the addition of electrically conductive particles.
- the first layer of the connection device can preferably be made electrically conductive, on which a plurality of non-conductive layers are applied and, if necessary the outside again by eg a conductive layer for contacting further contacts are formed.
- a conductive layer in the longitudinal direction of the ignition coil may also be made by having conductive circumferentially distributed portions (e.g., in the form of longitudinal stripes) on the surface of the ignition coil
- Connection device are arranged.
- Figure 1 is a side view of an ignition coil according to a first
- Figure 2 is a sectional view of an ignition coil according to the
- FIG. 3 is a further sectional view of an ignition coil according to the
- FIG. 1 shows a section of an ignition coil 1 according to the invention, in whose upper region the so-called ignition coil head is located in a housing 2.
- the ignition coil head contains in this case the ground connection with a first contact zone 6, which is guided to the outside. Approximately at the upper edge of the first contact zone 6 and the upper edge of the connection device 5 is arranged, which is the
- Housing 2 of the ignition coil 1 completely surrounds. While the surface of the attachment device 5 is designed to be substantially cylindrical in its upper region, a seal 50 with sealing lips 51 adjoins downward. Of the illustrated three sealing lips 51, the upper has a larger flank on its (in the picture) lower side a larger cross-sectional area by a much flatter edge. This gives it a higher bending stiffness than that of the two lower sealing lips, which are first introduced during assembly in the spark plug shaft of the engine block.
- a second contact zone 7 is via the conductive portions of
- Tying device 5 is electrically connected to the first contact zone 6.
- the second contact zone furthermore has strips extending parallel to the longitudinal axis X-X of the ignition coil and which are in contact with the connection device 5.
- FIG. 2 shows a sectional view along the longitudinal axis X-X through an ignition coil 1 according to the invention.
- the coil assembly 3 is equipped with an outer core 30, which, because of its shape, is also called a C core.
- the C-core 30 is cut only on the right-hand side and on a C-core contacting 8 with the connection device
- Attachment device 5 is arranged on the lower side of the C-core 30, where a portion of the attachment device 5 between the housing 2 and the C-core 30 is braced.
- the attachment device 5 comprises the seal 50 with the sealing lips 51 and thus provides both the electrical and mechanical
- Figure 3 shows an enlarged sectional view according to the
- the first contact zone 6 is connected inter alia via the seal 50 of the connection device 5 on the one hand electrically connected to the wall 90 of the spark plug well 9, on the other hand with a second contact zone 7.
- Tying device 5 of the ignition coil 1 according to the invention take place and is performed simultaneously with the assembly of the ignition coil.
- a clamping connection via an additional component e.g. an engine-side valve cover
- an additional component e.g. an engine-side valve cover
- the contact force between the attachment device 5 and the spark plug well 9 can also be a bias voltage between the two components by appropriate selection of the material properties, in particular the
- connection device 5 e.g. whose elasticity, can be adjusted.
- an electrically conductive adhesive may additionally be provided between connection device 5 and spark plug shaft 9.
- the electrical connection device 5 simultaneously also fulfills a holding function of the ignition coil in the plug shaft as well as a sealing function of the plug shaft.
- connection device 5 can be applied very simply and inexpensively and is therefore very good for a
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013015339A BR112013015339A2 (en) | 2010-12-20 | 2011-10-27 | ignition coil with a coupling device |
CN201180061447.4A CN103262368B (en) | 2010-12-20 | 2011-10-27 | Ignition coil having coupling device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010063508 DE102010063508A1 (en) | 2010-12-20 | 2010-12-20 | Ignition coil with connection device |
DE102010063508.1 | 2010-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012084313A1 true WO2012084313A1 (en) | 2012-06-28 |
Family
ID=44883251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/068911 WO2012084313A1 (en) | 2010-12-20 | 2011-10-27 | Ignition coil having a coupling device |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN103262368B (en) |
BR (1) | BR112013015339A2 (en) |
DE (1) | DE102010063508A1 (en) |
WO (1) | WO2012084313A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019161017A (en) * | 2018-03-13 | 2019-09-19 | 株式会社デンソー | Ignition device for internal combustion engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106710851A (en) * | 2015-11-16 | 2017-05-24 | 联合汽车电子有限公司 | High-voltage connecting rod for ignition coil |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003038958A1 (en) * | 2001-10-23 | 2003-05-08 | Robert Bosch Gmbh | Connecting device for ignition systems of internal combustion engines |
JP2005050892A (en) * | 2003-07-30 | 2005-02-24 | Hitachi Ltd | Ignition coil for internal combustion engine |
DE102004039036A1 (en) * | 2003-08-12 | 2005-03-24 | Denso Corp., Kariya | Ignition device for a combustion engine has cylindrical seal between coil housing and screw hole having a ring projection with faces at different angles to the hole surface |
-
2010
- 2010-12-20 DE DE201010063508 patent/DE102010063508A1/en not_active Withdrawn
-
2011
- 2011-10-27 WO PCT/EP2011/068911 patent/WO2012084313A1/en active Application Filing
- 2011-10-27 BR BR112013015339A patent/BR112013015339A2/en not_active IP Right Cessation
- 2011-10-27 CN CN201180061447.4A patent/CN103262368B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003038958A1 (en) * | 2001-10-23 | 2003-05-08 | Robert Bosch Gmbh | Connecting device for ignition systems of internal combustion engines |
JP2005050892A (en) * | 2003-07-30 | 2005-02-24 | Hitachi Ltd | Ignition coil for internal combustion engine |
DE102004039036A1 (en) * | 2003-08-12 | 2005-03-24 | Denso Corp., Kariya | Ignition device for a combustion engine has cylindrical seal between coil housing and screw hole having a ring projection with faces at different angles to the hole surface |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019161017A (en) * | 2018-03-13 | 2019-09-19 | 株式会社デンソー | Ignition device for internal combustion engine |
JP7106901B2 (en) | 2018-03-13 | 2022-07-27 | 株式会社デンソー | Ignition device for internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
CN103262368A (en) | 2013-08-21 |
DE102010063508A1 (en) | 2012-06-21 |
CN103262368B (en) | 2017-02-15 |
BR112013015339A2 (en) | 2016-09-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102007014044A1 (en) | Waterproof electrical connector | |
DE3405956A1 (en) | ELECTRICAL CONNECTOR | |
WO2016096253A1 (en) | Sensor device, in particular for use in a motor vehicle | |
DE102017121459A1 (en) | Cable seal and arrangement with a housing | |
DE112013003098T5 (en) | Connector and injection method for filling material | |
EP1775799A1 (en) | Connector for pyrotechnical applications | |
DE10338616A1 (en) | Plug connection with electrically conductive plastic flap | |
EP3485539A1 (en) | High temperature resistant plug connector for a knock sensor of an internal combustion engine | |
WO2013068560A1 (en) | Shielded plug connector and method for producing a shielded plug connector | |
DE102004012883A1 (en) | Connector for the electrical connection of solar panels | |
WO2012084313A1 (en) | Ignition coil having a coupling device | |
DE102008061926B4 (en) | Elongated metal element for injection into a component | |
DE102016118236A1 (en) | Vehicle sensor with a variety of wires | |
DE102022119598A1 (en) | connector connection structure | |
DE102007034817B4 (en) | A sealed contact housing for an electrical connector in a vehicle | |
EP2509168B1 (en) | Connector with insertion aid for inserting contact elements | |
DE102021110681B3 (en) | Plug connection for airbag ignition systems | |
DE102013216603A1 (en) | Method for producing an actuator for an injection valve and method for producing an injection valve | |
DE102004007357A1 (en) | High frequency plug contact with a crimp sleeve comprises a conductor, an insulation layer, screening and a further insulation layer | |
EP3785334B1 (en) | Connector part with a shielding sleeve | |
DE102012101232B4 (en) | Glühkerzensteckverbinder | |
WO2013139545A1 (en) | Sealingly encapsulated component, and method for producing such a component | |
DE102021202054B4 (en) | Housing assembly with seal | |
DE102011006838A1 (en) | Connector with insertion aid for inserting contact elements | |
DE10301399B4 (en) | Electrical connector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11776170 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11776170 Country of ref document: EP Kind code of ref document: A1 |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013015339 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112013015339 Country of ref document: BR Kind code of ref document: A2 Effective date: 20130618 |