EP1706878A1 - Zündspule für eine brennkraftmaschine - Google Patents
Zündspule für eine brennkraftmaschineInfo
- Publication number
- EP1706878A1 EP1706878A1 EP05701112A EP05701112A EP1706878A1 EP 1706878 A1 EP1706878 A1 EP 1706878A1 EP 05701112 A EP05701112 A EP 05701112A EP 05701112 A EP05701112 A EP 05701112A EP 1706878 A1 EP1706878 A1 EP 1706878A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ignition coil
- internal combustion
- combustion engine
- winding
- electrically conductive
- 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
Classifications
-
- 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
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/361—Electric or magnetic shields or screens made of combinations of electrically conductive material and ferromagnetic material
-
- 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
- H01F27/33—Arrangements for noise damping
Definitions
- the invention relates to an ignition coil for an internal combustion engine with a primary winding, in particular a cylindrical one,
- Primary coil body a low-voltage connection area for connecting the primary winding to a low voltage, a secondary winding inductively coupled to the primary winding, arranged on a particularly cylindrical secondary coil body, for providing a high voltage for a spark plug of the internal combustion engine, the primary coil body and secondary coil body being arranged concentrically to one another, and a high-voltage connection area which the secondary winding contacts the spark plug.
- An ignition coil of this type is known from DE 100 57 567.
- the generic ignition coil is a so-called "rod coil for ignition systems of internal combustion engines", which has an elongated design so that it can be arranged in the narrow space available in the engine block of the internal combustion engine. Above the low-voltage connection area lies on the primary winding a primary voltage, which due to the inductive coupling between the primary and secondary windings as a highly transformed voltage High-voltage connection area of the secondary winding is available and there acts on the spark plug.
- a magnetic circuit is formed by primary and secondary coils and the cylindrical magnetic core and the magnetic conductive sleeve. To avoid eddy current losses in the sleeve, which is also metallic conductive, the sleeve has a continuous longitudinal slot, so that induced electric eddy currents are reduced.
- EMC electromagnetic compatibility
- An ignition coil according to the preamble of claim 1 is known from DE 199 27 820 G1. Regarding the prior art, reference is also made to DE 199 09 211 AI.
- the invention has for its object to improve an ignition coil of the type mentioned in terms of its electromagnetic compatibility (EMC) and at the same time in terms of its mechanical strength. This object is achieved in that an electrically conductive, essentially cylindrical layer with mechanical damping properties is arranged within an annular space delimited by the outer of the two windings.
- the invention is characterized in that the conductive layer, which is arranged between the primary and secondary coils, enables a significant reduction in the electromagnetic interference emission without the magnetic properties of the coil being decimated as such. Surprisingly, the conductive layer arranged between the primary and secondary coils has no influence on the magnetic properties of the ignition coil, but it does help to achieve a significantly improved shielding effect.
- the layer is designed as a sandwich structure consisting of at least two partial layers with an intermediate layer with mechanical damping properties.
- Designing it as a sandwich structure not only improves the electromagnetic compatibility (EMC), but also the strength of the ignition coil.
- EMC electromagnetic compatibility
- the mechanical cushioning means that the primary and secondary coils are coupled to one another in a favorable manner.
- FIG. 1 shows a longitudinal section through an ignition coil according to the invention according to the embodiment.
- FIG. 2a shows a section along the line II-II in Fig. 1.
- FIG. 2b shows a section along the line IIb-IIb in FIG. 2a;
- Fig. 3 is an enlarged view along the line III in Fig. 2a.
- FIG. 1 shows a longitudinal section through an exemplary embodiment of an ignition coil according to the invention, which has a low-voltage connection 10 in its upper region, to which the required low voltage is applied to the ignition coil.
- the ignition coil In its lower area, the ignition coil has a high-voltage connection area 5, in which a connecting section with a spark plug (not shown) opens.
- the ignition coil has a cylindrical design.
- a cylindrical magnetic core 6 is formed, which consists of layered magnetic sheets, in particular iron silicon sheets. Individual magnetic sheets of different widths are stacked in this way and with isolation of the individual sheets connected to each other to form the core 6 with an approximately circular contour.
- the core 6 is surrounded by a secondary coil body 4, which carries a secondary winding 3, which is electrically connected to the high-voltage connection area 5.
- the connection of the secondary winding 3 to the high-voltage connection area 5 takes place via an electrical resistor 11, which essentially serves to suppress interference, and a rectifier diode 12 , which is housed in a housing 13.
- the secondary coil body 4 is surrounded concentrically by a primary coil body 2, which carries a primary winding 1.
- the primary winding 1 is a three-layer winding.
- the coil unit is surrounded by a sleeve 7, which consists of an electrically conductive and at the same time magnetically conductive material, in particular iron silicon sheet.
- the sleeve 7 is formed by two roll-formed magnetic sheets which are insulated from one another.
- the outer periphery of the sleeve 7 also forms the outer periphery of the ignition coil described.
- the sleeve 7, the primary winding 1, the secondary winding 3 and the core 6 form a magnetic circuit for generating the required ignition energy, which is applied to the spark plug.
- this is provided with a continuous longitudinal slot.
- the winding feed line running along the longitudinal slot 8 is fixed via an insulation layer within the slot area by the winding feed line being fixed in a suitable embedding material. Embedding is preferably carried out using epoxy resin.
- the cylindrical region formed between the leading out of the ends of the secondary winding 3 and the high-voltage connection 5 serves, on the one hand, to accommodate the resistor 11 serving as a suppression element and, on the other hand, to accommodate the diode 12, by means of which the current flowing into the spark plug is rectified, that the negative useful pulse for the ignition is let through, but the positive disturbing pulse is suppressed.
- FIG. 3 shows the structure of the layer 16 provided in the annular space between the primary and secondary coils in the form of a sandwich structure.
- an intermediate layer 17 with mechanical absorption properties wherein • the intermediate layer 17 itself also includes conductive particles that mediate the intermediate layer 17 is also conductive properties.
- Layer 16 gives the ignition coil, on the one hand, improved EMC compatibility due to the improved shielding effect and, on the other hand, primary and secondary coil bodies are “padded” much better against one another.
- Layer 16 is connected to the ground potential.
- the layer 16 is connected to the ground potential by electrically connecting one of the two sub-layers 16a, 16b to the winding region of the primary coil 1 which is at ground potential.
- the primary winding 1 is stripped at the corresponding winding section and contacted by soldering or similar connection techniques with the assigned sublayer.
- a connection technique is also possible in which an additional conductor is provided which connects the corresponding sublayer 16a, 16b with the winding gsende of the primary coil 1 connects.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004003223A DE102004003223B3 (de) | 2004-01-22 | 2004-01-22 | Zündspule für eine Brennkraftmaschine |
PCT/EP2005/000601 WO2005071701A1 (de) | 2004-01-22 | 2005-01-21 | Zündspule für eine brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1706878A1 true EP1706878A1 (de) | 2006-10-04 |
EP1706878B1 EP1706878B1 (de) | 2015-06-17 |
Family
ID=34800877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05701112.4A Not-in-force EP1706878B1 (de) | 2004-01-22 | 2005-01-21 | Zündspule für eine brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US7952456B2 (de) |
EP (1) | EP1706878B1 (de) |
JP (1) | JP4654202B2 (de) |
DE (1) | DE102004003223B3 (de) |
WO (1) | WO2005071701A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105405643B (zh) * | 2015-12-15 | 2019-07-26 | 重庆五福科技有限公司 | 一种点火线圈绕线工装 |
DE102018213661A1 (de) * | 2018-08-14 | 2020-02-20 | Siemens Aktiengesellschaft | Wicklungsanordnung mit Feldglättung und Armierung |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1839038A (en) * | 1931-07-22 | 1931-12-29 | Gen Electric | Transformer |
US3303835A (en) * | 1965-10-22 | 1967-02-14 | James R Richards | Fuel ignition system preventing radio frequency interference |
US3436704A (en) * | 1966-10-12 | 1969-04-01 | Westinghouse Electric Corp | Electrical transformer construction |
JPS54137116U (de) * | 1978-03-17 | 1979-09-22 | ||
JPS54137116A (en) | 1978-04-15 | 1979-10-24 | Matsushita Electric Works Ltd | Vertical gutter |
JPS54144924A (en) * | 1978-05-04 | 1979-11-12 | Hitachi Ltd | Ignition coil |
US4224068A (en) * | 1978-09-14 | 1980-09-23 | General Motors Corporation | Method of making distributor rotor electrode containing dielectric bodies for suppressing radio frequency interference |
JPS593907A (ja) * | 1982-06-29 | 1984-01-10 | Hitachi Ltd | モ−ルド変圧器 |
US4602308A (en) * | 1983-08-31 | 1986-07-22 | Control Concepts Corporation | Circuit for suppressing transients occurring in either common or transverse modes |
US5406926A (en) * | 1993-08-31 | 1995-04-18 | Industrial Technology Research Institute | Signal generator for an internal combustion engine |
DE19909211B4 (de) * | 1998-03-24 | 2012-10-18 | Pulse Gmbh | Elektrische Stabzündspule |
DE19927820C1 (de) * | 1998-10-27 | 2000-07-06 | Bremi Auto Elektrik Ernst Brem | Stabzündspule |
US6087918A (en) * | 1999-10-20 | 2000-07-11 | Delphi Technologies, Inc. | Twist lock ignition coil |
US6360706B1 (en) * | 2000-03-03 | 2002-03-26 | Delphi Technologies, Inc. | Shield and spring interface to a spark plug from a pencil coil |
DE10057567A1 (de) * | 2000-11-21 | 2002-05-23 | Bremi Auto Elek K Ernst Bremic | Zündspule für eine Brennkraftmaschine und Verfahren zu ihrer Herstellung |
US6463918B1 (en) * | 2001-02-14 | 2002-10-15 | Delphi Technologies, Inc. | Ignition apparatus having an electrically floating shield |
DE20211087U1 (de) * | 2002-07-23 | 2003-12-04 | Werner Turck Gmbh & Co. Kg | In einem Kunststoffgehäuse gekapselter Näherungsschalter mit Abschirmung |
US6982621B2 (en) * | 2003-04-01 | 2006-01-03 | Power Integrations, Inc. | Method and apparatus for substantially reducing electrical displacement current flow between input and output windings of an energy transfer element |
-
2004
- 2004-01-22 DE DE102004003223A patent/DE102004003223B3/de not_active Expired - Fee Related
-
2005
- 2005-01-21 WO PCT/EP2005/000601 patent/WO2005071701A1/de active Application Filing
- 2005-01-21 JP JP2006550055A patent/JP4654202B2/ja not_active Expired - Fee Related
- 2005-01-21 EP EP05701112.4A patent/EP1706878B1/de not_active Not-in-force
- 2005-01-21 US US10/587,107 patent/US7952456B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005071701A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20080224810A1 (en) | 2008-09-18 |
JP4654202B2 (ja) | 2011-03-16 |
JP2007520882A (ja) | 2007-07-26 |
US7952456B2 (en) | 2011-05-31 |
DE102004003223B3 (de) | 2005-08-25 |
WO2005071701A1 (de) | 2005-08-04 |
EP1706878B1 (de) | 2015-06-17 |
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