WO2000003139A1 - Unite de bobine d'allumage pour moteurs a combustion interne - Google Patents

Unite de bobine d'allumage pour moteurs a combustion interne Download PDF

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Publication number
WO2000003139A1
WO2000003139A1 PCT/EP1999/004793 EP9904793W WO0003139A1 WO 2000003139 A1 WO2000003139 A1 WO 2000003139A1 EP 9904793 W EP9904793 W EP 9904793W WO 0003139 A1 WO0003139 A1 WO 0003139A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition coil
ribs
coil unit
spark plug
internal combustion
Prior art date
Application number
PCT/EP1999/004793
Other languages
German (de)
English (en)
Inventor
Bernhard Stock
Andreas Vom Schloss
Original Assignee
Audi Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi Ag filed Critical Audi Ag
Publication of WO2000003139A1 publication Critical patent/WO2000003139A1/fr

Links

Classifications

    • 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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • 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
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]

Definitions

  • the invention relates to an ignition coil unit for internal combustion engines according to the preamble of claim 1.
  • Newer ignition systems in motor vehicles have ignition coil units in which the power output stage is already integrated and which are placed directly on the corresponding spark plugs.
  • Such an ignition coil unit essentially consists of a plug area and a head area, the ignition coil system with primary and secondary windings including a ferromagnetic core being arranged in the head area.
  • the ignition coil unit Since spark plugs are not designed for such mechanical loads in the area of the spark plug head, the ignition coil unit must be screwed to the cylinder head. For this purpose, corresponding bores are provided either directly on the housing of the ignition coil unit or on the projecting ferromagnetic core
  • Newer ignition coil units so-called Siabzü ⁇ dspulen, have a Spulen ⁇ y ⁇ tem with rod core, which is dimensioned so that it can be integrated in the elongated body of the Zünd ⁇ pulenü (connector area). Only electronic components (power amplifier) and a plug connection are housed in the head area. These ignition coil units are also screwed to the cylinder head.
  • each ignition coil unit has 2 or more screwing points. Because of these at least 8 screw connections, the motor assembly is relatively complex.
  • the object of the present invention is to provide an ignition coil unit for internal combustion engines, which enables easier assembly without screw connections.
  • the essential idea of the invention is the housing of a ignition coil comprising a core rod with Zündspulen ⁇ ystem, instead of providing holes as tantaxe, ela ⁇ ti ⁇ che ribs which abut when placing the Zünd ⁇ pulenritt to the spark plug on the wall 'of the plug hole. Because of the clamping action of the ribs, the ignition coil unit is firmly fixed to the cylinder head of the internal combustion engine. Harmful moments that could lead to damage to the spark plug cannot occur.
  • the assembly is considerably simplified, since after the ignition coil unit has been plugged onto the spark plug, no further screw connections are necessary.
  • FIG. 1 shows a schematic view of a device according to the invention
  • FIG. 2 schematic view of an ignition coil unit according to the invention according to FIG. 1 in an enlarged view
  • FIG. 1 shows an ignition coil unit 1 according to the invention, which is inserted into a spark plug bore 32 of a cylinder head 30 of an internal combustion engine (not shown in more detail).
  • the ignition coil unit 1 sits on a spark plug 50 which is arranged in the spark plug bore 32.
  • a plurality of ribs 20 are provided on the housing 5 of the ignition coil unit 1, which abut the wall 34 of the spark plug bore 32.
  • an extension 34a is provided, which serves to receive the ribs 20a.
  • the ignition coil unit 1 is shown enlarged in FIG. 2.
  • the ignition coil unit 1 designed as a rod ignition coil essentially consists of the rod-shaped housing 5 that has a plug connection 7 at one end.
  • the housing 5 comprises a Spulen ⁇ y ⁇ tem 10 with rod core 12.
  • the coil system 10 consists of primary and secondary winding, which are not shown in detail.
  • a number of elastic ribs 20 are provided, which abut the wall 34 of the cylinder head bore 32 and serve as connecting elements for fixing to the cylinder head 30.
  • This tilting of the Zünd ⁇ pulentician 1 in the Zündkerzenboh ⁇ tion 32 is avoided and thus a transmission of moments to the spark plugs neck 52 and the center electrode 54 of the spark plug 50 excluded. Screw connections to the cylinder head 30 are no longer necessary.
  • the wall 34 of the spark plug bore 32 is only shown in broken lines in FIG. 2.
  • the ribs 20a and 20b are advantageously arranged in the region of the ends of the rod core 12.
  • the center of gravity of the ignition coil unit 1, which coincides approximately with the center of gravity of the rod core 12, is optimally supported and transverse forces that occur are evenly distributed over the ribs 20a and 20b.
  • the ribs 20 as ribs running around the housing 20. This ensures better flexibility of the ribs 20, particularly in the direction of insertion.
  • the elastic ribs 20 can bend slightly to facilitate the insertion process.
  • the ribs 20a consist of 4 individual ribs and the ribs 20b consist of 2 individual ribs.
  • the number of individual ribs can vary. However, it should be adapted to the weight of the ignition coil unit 1.
  • a projection 9 is provided on the housing 5, which is designed to match a corresponding groove (not shown) in the spark plug bore 30.
  • the projection 9 can be elastic or rigid. Groove and projection 9 form an anti-rotation device, by means of which mechanical stress on the connecting cable including the connecting plug and the associated plug connection 7 (4-pin RD plug) of the ignition coil unit 1 is avoided. Since the ribs 20 would form an airtight seal when the ignition coil unit 1 was inserted into the spark plug bore 32, which would result in an increased expenditure of force during assembly, small recesses in the form of bores or incisions are provided on the ribs 20, which form an air passage through which the compressed air can escape.
  • the individual rib 21 closing off the spark plug bore 32 has no such recess. It thus seals the spark plug bore 32 in a water-tight manner.
  • the extension 34a forms a support 35 which, however, maintains a certain distance from the bottom of the ribs 20a. As a result, the weight of the ignition coil unit 1 is not supported and the vertical force on the spark plug 50 is maintained.
  • the lower end of the tab-shaped housing 5 is designed as a grommet 5a which overlaps the spark plug neck 52 of the schematically indicated spark plug 50.
  • the electrical connection between the ignition coil unit 1 and the center electrode 54 of the spark plug 50 is not shown in detail.
  • a total of three individual ribs are also provided on the spout 5a ⁇ several ribs 20c. These single ribs also have an air passage in order to avoid excess pressure in the enclosed air space.
  • These single ribs can also be arranged in the longitudinal direction of extension of the ignition coil unit. They mainly serve for guidance within the spark plug bore and thereby facilitate the placement process of the ignition coil unit 1 on the center electrode 54.
  • grommet 5a, housing 5 and all the ribs 20 are made in one piece as a cover made of silicone rubber.
  • the coating has a basic wall thickness of approx. 1 mm.
  • the ribs 20a protrude about 3 mm, the ribs 20b about 2 mm.
  • the cylinder head is covered with a cylinder head cover.
  • the shaft into which the spark plug is inserted extends partly onto the cylinder head itself and partly onto the cylinder head cover.
  • Fig. 2 is indicated by a dashed line L, where the dividing line between the cylinder head and the cylinder head cover would run approximately.
  • the cylinder head cover is also firmly connected to the cylinder head, it is not important for the function of the ribs 20a whether they are supported on the wall 32 of the cylinder head bore 30 or on the wall of a corresponding opening in a cylinder head cover.
  • an ignition coil unit is also fixed in the corresponding spark plug shaft.
  • forces, in particular moments cannot be transmitted to the spark plug.
  • the ignition coil unit 1 When the ignition coil unit 1 is installed, it is simply inserted into the spark plug bore 30 until it locks into place with the center electrode of the spark plug 50. During the insertion process, the individual ribs bend against the insertion direction and slide so easily on the Along wall 34. Due to the clamping effect of the individual ribs 20, the ignition coil unit 1 sits relatively firmly in the spark plug bore. After establishing the connection with the engine control unit by inserting a plug into the plug connection 7, the ignition coil unit 1 is ready for use. Elaborate screw connections are no longer necessary. This shortens the assembly time considerably.
  • the present invention can be summarized as follows.
  • a plurality of ribs 20 are provided as connecting elements to the cylinder head 30 of the internal combustion engine.
  • the ignition coil unit 1 is held firmly in a spark plug bore 32 by the ribs 20.
  • the usual screw connections can be omitted and the assembly is considerably simplified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

L'invention concerne une unité de bobine d'allumage (1) pour moteurs à combustion interne, pour laquelle il est prévu plusieurs nervures (20), comme éléments de raccordement avec la culasse (30) d'un moteur à combustion interne. Les nervures (20) permettent de maintenir fixe l'unité de bobine d'allumage (1) dans un alésage de bougie d'allumage (32). Ce système permet d'éviter les vissages traditionnels et simplifie considérablement le montage.
PCT/EP1999/004793 1998-07-11 1999-07-08 Unite de bobine d'allumage pour moteurs a combustion interne WO2000003139A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831196.6 1998-07-11
DE1998131196 DE19831196C2 (de) 1998-07-11 1998-07-11 Zündspuleneinheit für Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
WO2000003139A1 true WO2000003139A1 (fr) 2000-01-20

Family

ID=7873791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/004793 WO2000003139A1 (fr) 1998-07-11 1999-07-08 Unite de bobine d'allumage pour moteurs a combustion interne

Country Status (2)

Country Link
DE (1) DE19831196C2 (fr)
WO (1) WO2000003139A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19851127C2 (de) * 1998-11-06 2003-08-21 Beru Ag Zündkerzensteckerstützmanschette
DE10257101B3 (de) * 2002-12-05 2004-05-19 Robert Bosch Gmbh Stabzündspule
DE10256802B3 (de) * 2002-12-05 2004-04-15 Robert Bosch Gmbh Stabzündspule
DE102008062883A1 (de) * 2008-12-12 2010-06-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Abdichteinrichtung eines Zündstabmoduls
JP5093375B2 (ja) * 2011-03-16 2012-12-12 三菱電機株式会社 点火コイル装置
US8225775B1 (en) 2011-08-05 2012-07-24 Mitsubishi Electric Corporation Ignition coil device
DE102013016938A1 (de) * 2013-10-11 2015-04-16 Man Diesel & Turbo Se Otto-Gasmotor
SE545045C2 (en) * 2021-03-08 2023-03-07 Sem Ab Ignition coil assembly for combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579487A2 (fr) * 1992-07-16 1994-01-19 Sumitomo Wiring Systems, Ltd. Construction d'un couplage
EP0713005A2 (fr) * 1994-11-17 1996-05-22 Sumitomo Wiring Systems, Ltd. Connection d'une bobine d'allumage et d'une bougie d'allumage pour un moteur à combustion interne
EP0715073A2 (fr) * 1994-11-30 1996-06-05 Bayerische Motoren Werke Aktiengesellschaft Appareil pour coupler une bobine d'allumage individuelle avec une culasse de cylindre de moteur à combustion interne
EP0796993A2 (fr) * 1996-03-21 1997-09-24 Hitachi, Ltd. Appareil d'allumage pour un moteur à combustion interne
US5842458A (en) * 1997-08-12 1998-12-01 Cummins Engine Company, Inc. Spark plug boot with ventable seal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3498449B2 (ja) * 1995-11-08 2004-02-16 株式会社デンソー 内燃機関用点火装置
JP3393770B2 (ja) * 1995-12-11 2003-04-07 株式会社デンソー 内燃機関用点火コイル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579487A2 (fr) * 1992-07-16 1994-01-19 Sumitomo Wiring Systems, Ltd. Construction d'un couplage
EP0713005A2 (fr) * 1994-11-17 1996-05-22 Sumitomo Wiring Systems, Ltd. Connection d'une bobine d'allumage et d'une bougie d'allumage pour un moteur à combustion interne
EP0715073A2 (fr) * 1994-11-30 1996-06-05 Bayerische Motoren Werke Aktiengesellschaft Appareil pour coupler une bobine d'allumage individuelle avec une culasse de cylindre de moteur à combustion interne
EP0796993A2 (fr) * 1996-03-21 1997-09-24 Hitachi, Ltd. Appareil d'allumage pour un moteur à combustion interne
US5842458A (en) * 1997-08-12 1998-12-01 Cummins Engine Company, Inc. Spark plug boot with ventable seal

Also Published As

Publication number Publication date
DE19831196C2 (de) 2002-06-13
DE19831196A1 (de) 2000-01-13

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