EP0819214A1 - Dispositif d'allumage pour moteur a combustion interne multicylindre - Google Patents

Dispositif d'allumage pour moteur a combustion interne multicylindre

Info

Publication number
EP0819214A1
EP0819214A1 EP96945837A EP96945837A EP0819214A1 EP 0819214 A1 EP0819214 A1 EP 0819214A1 EP 96945837 A EP96945837 A EP 96945837A EP 96945837 A EP96945837 A EP 96945837A EP 0819214 A1 EP0819214 A1 EP 0819214A1
Authority
EP
European Patent Office
Prior art keywords
ignition
ignition device
internal combustion
combustion engine
end section
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
Application number
EP96945837A
Other languages
German (de)
English (en)
Other versions
EP0819214B1 (fr
Inventor
Uwe Hammer
Dieter Betz
Karl-Heinz NÜBEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0819214A1 publication Critical patent/EP0819214A1/fr
Application granted granted Critical
Publication of EP0819214B1 publication Critical patent/EP0819214B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01T13/06—Covers forming a part of the plug and protecting it against adverse environment
    • 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

Definitions

  • the invention relates to an ignition device for a multi-cylinder internal combustion engine according to the genus
  • Such an ignition device is known from EP 0 512 357 A2 in such a way that here several individual ignition coils are individually mounted in a carrier unit and protrude from the carrier unit with their high-voltage domes.
  • a carrier unit completed in this way can then be applied as a one-piece part to the cylinder head of an internal combustion engine and all spark plugs can be connected to the associated ignition coils.
  • the ignition coils are rigidly fixed in the carrier unit, so that they are exposed to strong shaking accelerations during operation of the internal combustion engines, which can reduce the operational reliability of the ignition device.
  • each ignition coil of the ignition device is formed by a part of a core of the ignition coil which projects from a housing of the ignition coil and on which a buffer is attached. Since the other end section of each ignition coil is also connected to at least one elastic body, the ignition device can be fastened in an elastically tensioned manner to a cylinder head of the internal combustion engine by means of a holding element.
  • An ignition device 11 shown in the figure for a multi-cylinder internal combustion engine contains, according to the Number of cylinders of the internal combustion engine, several ignition coils 12.
  • the ignition device 11 is provided for mounting on a cylinder head 13 of the internal combustion engine.
  • so-called candle shafts 15 with a round one are assigned to each cylinder and each starting from an inlet opening 14
  • Passage cross section arranged.
  • a spark plug 16 is inserted in a fixed manner in each plug shaft 15.
  • the spark plug 16 has an inside, facing the inlet opening 14
  • High-voltage connection 17 which consists of a pin-shaped electrode 18 and an essentially cylindrical insulating body 19 supporting the electrode 18.
  • the ignition coils 12 are in the form of pencil ignition coils with a cylindrical housing 20 made of elastic insulating material.
  • the diameter of the housing 20 is a joining play smaller than the diameter of the plug shaft 15.
  • a first end section 21 protrudes from the housing in axial alignment at the end for arrangement on the high-voltage connection 17 of the assignable spark plug 16 and a second end section 22 as an extension of an otherwise inside the Housing 20 extending core 23 of the ignition coil 12 out.
  • the core 23 is rod-shaped, consists of a layered, magnetically conductive material and carries a primary and a secondary coil in a known and not shown manner in a concentric arrangement.
  • the core 23 has an encapsulation 24 made of plastic, which surrounds the core 23 in layers in a wide area, but at the beginning of the second end section 22 at the exit from the housing 20 in addition to a radially extending circumferential shoulder 26 and as the first End section 21 is formed in the extension of the core 23 to an axially directed sleeve-shaped high-voltage dome 27.
  • an axially directed, pin-shaped high-voltage connection element 28 is arranged therein.
  • a buffer 29 in the form of a hat-shaped rubber cap is attached to the second end section 22 and rests with a bottom 31 on the end face of the second end section 22 and with an outer jacket 32 laterally on the second end section 22 up to the shoulder 26.
  • the outer jacket 32 has a conical contour tapering towards the bottom 31.
  • Holding element 33 is provided, which is designed as a stamped part and can be screwed to the cylinder head 13 in a manner not shown along the reference lines 34.
  • the holding element 33 In association with the mounting position of the ignition coils 12 on the cylinder head 13, the holding element 33 has a recess 36 in the form of a bore 37 or a passage 38 for each buffer 29 in order to accommodate it.
  • a spout 39 made of elastic insulating material is inserted to the longitudinal stop on each candle well 15, the spout 39 with a lateral surface 41 resting against a wall 42 of the candle well 15 without play.
  • the spout 39 has a stepped bore 43 with a first bore section 44 and a second bore section 46.
  • the first bore section 44 which is smaller in diameter, engages around the insulating body 19 in the inserted state of the grommet 39, and the spark plug 17 which has already been assembled except for a centering section 47 of the insulating body 19 adjacent to the electrode 18.
  • the ignition coil 12 is now inserted into the plug shaft 15 with radial play until the housing 20 strikes at the end of the grommet 39.
  • the end region of the high-voltage dome 27 comprises the centering section 47 of the insulating body 19 with play on the inside and lies on the outside without play or with little radial pressure in the second bore section 46 of the grommet 39, which has a larger diameter.
  • a high-voltage contact element 48 in the form of a coil spring made of metal engages with the high-voltage connection 18 of the spark plug 17 and provides the electrical connection between the output of the ignition coil 12 and the input of the spark plug 17 in a flexible way.
  • each buffer 29 comes into an associated recess 36.
  • the inside width of the recess 36 is dimensioned such that the buffer 29 can pass through in the region of the bottom 31, but immediately thereafter, approximately after a third of the longitudinal extent of the buffer 29, the
  • Outer jacket 32 comes to rest on the inside of the recess 36 and prevents further passage of the buffer 29.

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)
  • Spark Plugs (AREA)

Abstract

Un dispositif d'allumage (11) destiné à un moteur à combustion interne multicylindre doit être conçu de sorte que son fonctionnement soit fiable même lors d'accélérations du moteur à combustion interne créant des secousses. Le dispositif d'allumage (11) comporte des bobines d'allumage (12) en forme de barres, dont le nombre correspond à celui des cylindres du moteur à combustion interne. Une partie terminale (22) de chaque bobine d'allumage (12) est formée par une partie d'un noyau (23) de la bobine d'allumage (12) faisant saillie du boîtier (20) de la bobine d'allumage (12). Un amortisseur est monté sur cette partie terminale (22). L'autre partie terminale (21) de la bobine d'allumage (12) est formée par un dôme haute tension (27) qui est contenu dans une douille (39) en matière élastique montée dans l'alésage à bougie (15) d'une tête de cylindre (13) du moteur à combustion interne. Le dispositif d'allumage (11) est maintenu en tension, de façon élastique, au niveau des deux parties terminales (21, 22), dans la tête de cylindre (13) du moteur à combustion interne, par un élément de retenue (33). La transmission de tensions élevées à une bobine d'allumage (16) associée se fait d'une façon souple par l'intermédiaire d'un élément de contact haute tension (48) se présentant sous la forme d'un ressort.
EP96945837A 1996-02-06 1996-10-28 Dispositif d'allumage pour moteur a combustion interne multicylindre Expired - Lifetime EP0819214B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19604105 1996-02-06
DE19604105A DE19604105A1 (de) 1996-02-06 1996-02-06 Zündvorrichtung für eine Mehrzylinder-Brennkraftmaschine
PCT/DE1996/002048 WO1997029280A1 (fr) 1996-02-06 1996-10-28 Dispositif d'allumage pour moteur a combustion interne multicylindre

Publications (2)

Publication Number Publication Date
EP0819214A1 true EP0819214A1 (fr) 1998-01-21
EP0819214B1 EP0819214B1 (fr) 2000-03-29

Family

ID=7784545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945837A Expired - Lifetime EP0819214B1 (fr) 1996-02-06 1996-10-28 Dispositif d'allumage pour moteur a combustion interne multicylindre

Country Status (7)

Country Link
US (1) US5890473A (fr)
EP (1) EP0819214B1 (fr)
JP (1) JPH11504412A (fr)
KR (1) KR19980703531A (fr)
BR (1) BR9604941A (fr)
DE (2) DE19604105A1 (fr)
WO (1) WO1997029280A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020057170A1 (en) * 1999-11-08 2002-05-16 Albert Anthony Skinner Ignition coil
DE10152085A1 (de) * 2001-10-23 2003-04-30 Bosch Gmbh Robert Verbindungsmittel für Zündanlagen von Brennkraftmaschinen
US6877497B2 (en) * 2003-02-21 2005-04-12 Delphi Technologies, Inc. Ignition coil cassette having epoxy anchored bushings
JP6528573B2 (ja) * 2015-07-13 2019-06-12 株式会社デンソー 点火装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706639A (en) * 1986-12-04 1987-11-17 General Motors Corporation Integrated direct ignition module
FR2655385B1 (fr) * 1989-12-01 1992-04-03 Peugeot Dispositif de fixation amovible sur une culasse de moteur d'un ensemble constitue par une bobine d'allumage et une bougie.
US5109828A (en) * 1990-03-27 1992-05-05 Nippondenso Co., Ltd. Apparatus for supplying high voltage to spark plug of internal combustion engine
US5152274A (en) * 1990-08-01 1992-10-06 Mitsubishi Denki Kabushiki Kaisha Ignition coil apparatus
US5111790A (en) * 1990-09-28 1992-05-12 Prestolite Wire Corporation Direct fire ignition system having individual knock detection sensor
US5239973A (en) * 1990-10-12 1993-08-31 Mitsubishi Denki Kabushiki Kaisha Ignition apparatus for an internal combustion engine
IT1246068B (it) * 1991-05-03 1994-11-07 Magneti Marelli Spa Gruppo di accensione a bobine di tipo plug-top per un motore a combustione interna
DE4420271B4 (de) * 1994-06-10 2007-09-27 Robert Bosch Gmbh Zündspulensatz für eine Mehrzylinder-Brennkraftmaschine
US5577921A (en) * 1995-06-16 1996-11-26 Caterpillar Inc. Electrical connector system for electrically connecting a voltage source to a spark plug terminal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9729280A1 *

Also Published As

Publication number Publication date
BR9604941A (pt) 1998-06-09
KR19980703531A (ko) 1998-11-05
JPH11504412A (ja) 1999-04-20
WO1997029280A1 (fr) 1997-08-14
DE19604105A1 (de) 1997-08-07
US5890473A (en) 1999-04-06
EP0819214B1 (fr) 2000-03-29
DE59604841D1 (de) 2000-05-04

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