EP0449725A1 - Zündanlage für innere Brennkraftmaschine - Google Patents

Zündanlage für innere Brennkraftmaschine Download PDF

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Publication number
EP0449725A1
EP0449725A1 EP91400814A EP91400814A EP0449725A1 EP 0449725 A1 EP0449725 A1 EP 0449725A1 EP 91400814 A EP91400814 A EP 91400814A EP 91400814 A EP91400814 A EP 91400814A EP 0449725 A1 EP0449725 A1 EP 0449725A1
Authority
EP
European Patent Office
Prior art keywords
coil
ignition device
connector
ignition
locking
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
EP91400814A
Other languages
English (en)
French (fr)
Other versions
EP0449725B1 (de
Inventor
André Sergent
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0449725A1 publication Critical patent/EP0449725A1/de
Application granted granted Critical
Publication of EP0449725B1 publication Critical patent/EP0449725B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6271—Latching means integral with the housing
    • 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
    • F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
    • F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
    • 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 present invention relates to an ignition device for an internal combustion engine, and more particularly for an engine comprising several cylinders, in which the spark plugs are supplied by means of cables connected directly each to one of the high voltage outputs d '' an induction coil whose number of high voltage outputs corresponds to that of the engine cylinders.
  • each cable When installing such a device, each cable must be individually connected to the appropriate high voltage output. This connection is generally made manually and it is well known that the risk of swapping between the wires is significant, in particular due to the proximity of the high voltage outputs of the coil.
  • the present invention therefore aims to provide an ignition device in which the high voltage connections are absolutely safe and easy to control while being quick to install.
  • the object of this invention is in fact an ignition device for an internal combustion engine in which the spark plugs of the various cylinders are supplied by ignition cables each connected to a high voltage output of an induction coil. multiple outputs, this device comprising a connector formed by a hollow body which delimits a cavity having a series of side-by-side outputs for the spark plug ignition cables and the induction coil connection inputs, each surrounded by a socket sleeve on a boss of this coil, as well as means for locking the connector on the coil.
  • the locking means act by snap-fastening.
  • the electrical connection between the high voltage current source constituted by the coil and the spark plugs is thus carried out in a very simple manner, without risk of total or partial disconnection resulting in misfire, and furthermore can at any time be controlled.
  • the locking means are arranged eccentrically on the connector and the coil. Any risk of incorrectly connecting an ignition wire to the coil is thus made impossible.
  • the electrical connections between the ignition wires and the coil are constituted by high voltage cables, a printed circuit, rigid wires or others.
  • FIG. 1 is a diagram of an ignition device according to the invention.
  • Figure 2 is a perspective view of a connector according to a first embodiment.
  • Figure 3 is a vertical sectional view showing the assembly of the connector of Fig.2 on an induction coil.
  • Figures 4 and 5 are views in vertical section of the connection between the connector and a high voltage output of the coil according to two alternative embodiments.
  • Figure 6 is a top view, in plan, of a connector according to an alternative embodiment.
  • Figure 7 is a sectional view along line 7/7 of Fig.6.
  • Figure 8 is a vertical sectional view of the connection between the connector of Fig.6 and a high voltage output of the coil.
  • FIG. 9 schematically shows an alternative embodiment of the electrical connection between an ignition cable and an input pad in the connector.
  • Figure 10 is a perspective view of a connector according to another alternative embodiment.
  • Figure 11 is a vertical sectional view along line 11/11 of Fig.10.
  • FIGS 12 to 15 illustrate another embodiment of the invention.
  • Fig. 1 schematically shows an ignition device according to the invention mounted on an internal combustion engine with four cylinders of which the spark plug wells A, B, C and D have been shown.
  • This device comprises an electric current source high voltage consisting in particular of a coil 1 having four high voltage outputs.
  • a connector 2 which provides the electrical connection between each of the high voltage outputs of the coil and an ignition cable 3, 4, 5 or 6 connected to the spark plug 8 of one of the engine cylinders.
  • the connector 2 comprises a hollow body 10 which delimits a cavity 12 open at its upper part.
  • the hollow body 10 has a series of notches 14, four in the case of the ignition device shown in Fig.1, and each of these notches receives one of the cables ignition 3, 4, 5 and 6.
  • These cables extend inside the cavity 12 to an orifice 16 for connection to one of the high voltage outputs of the coil 1.
  • the cables are supported and isolated from the bottom of the cavity 12 by means of tabs 18 having an opening in the shape of a semicircle.
  • cables 3, 4, 5 and 6 are insulated from each other by L-shaped or 20-shaped or U-shaped spacers 21 which insulate them from each other.
  • the cables are preferably embedded in an electrically insulating resin which fills the cavity 12 to its upper part.
  • Each of the orifices 16 for connection to the coil is surrounded by a sleeve 22 having an internal diameter significantly greater than that of the orifice 16 so as to be able to fit onto one of the bosses 24 delimiting the high voltage outputs of the coil 1.
  • the sleeve 22 has a substantially cylindrical shape while the boss 24 has a frustoconical outer surface of smaller diameter, a sealing device is then interposed between the sleeve 22 and the boss 24.
  • This device can consist of a rubber seal or the like 26 of annular shape fitted on the boss 24 and curved at its lower part 27 on the sleeve 22, by a seal 28, also made of rubber or the like, compressed between the end of the boss 24 and the bottom of the sleeve 22, or by a combination of these two types of seal.
  • a cavity 30 in which protrudes a rod 32 for output of the high voltage current from the coil.
  • the rod 32 is threaded and carries a helical spring 34 on which abuts a connection pad 36 carried by the cable 3, 4, 5 or 6 and passing through the inlet orifice 16, when the connector 2 is mounted on coil 1.
  • the cavity 12 for housing the cables 3, 4, 5 and 6 is delimited not only by the wall of the hollow body 10, but also by a closed internal partition 40 which surrounds a attachment chamber 42.
  • the bottom 44 of the chamber 42 is pierced with a transverse slot 46 whose width is sufficient to allow the passage of the elastically deformable head 48 of a locking rod 50 secured to the coil 1.
  • the rod 50 is split longitudinally and comprises a head 48 of substantially conical shape delimiting with the body of the rod a lateral support shoulder on the bottom 44 of the locking chamber.
  • the connector 2 can be mounted on the coil 1 by simple interlocking and snap-fastening.
  • Each of the sleeves 22 is in fact set up automatically on the corresponding boss 24 when the head 48 of the locking rod 50 enters the slot 46 and immobilizes the connector relative to the coil.
  • the connector 2 can only be mounted in one position relative to the coil so that each of the cables 3, 4, 5 and 6 can only be connected with a well-defined high voltage output 24 and that no switching of the ignition cables is possible.
  • the electrical connection between each of the ignition cables 3, 4, 5 and 6 and the spring 34 of the high voltage output 24 of the coil is ensured by means of a ring 52, made of electrically conductive material, which is crimped on the end of the cable and clamps on the outer wall of the latter one of the branches 53 of a pin 54 whose second branch 55 is introduced inside the cable so as to be in contact with the conductive core 56 of the latter.
  • the spring 34 passes through the orifice 16 of the bottom of the housing 10 to come into contact with the crimped ring 52.
  • the helical spring 34 can be screwed onto a threaded rod as shown in Fig.3 or simply be supported on the bottom of the recess 30 of the boss 24, the output of the high voltage current from the coil being then provided by a cylindrical rod 58.
  • the electrical connections inside the cavity 12 are provided by a printed circuit 62 connecting the ignition cables 3, 4, 5 and 6 to the orifices 16 for connection to the coil.
  • the printed circuit 62 (Fig. 6 to 8) is mounted on a support 64 which is isolated from the wall of the body hollow 10 by support tabs 18 and is embedded in an electrically insulating resin filling the cavity 12.
  • Each cable 3, 4, 5 and 6 is connected to the printed circuit 62 by means of a conductive ring 66 which is fixed on the printed circuit 62 and its support 64 by means of a rivet 68 and is crimped onto the cable in the same way as the ring 52 by crushing a conductive pin 70.
  • connection pad 72 which passes through the hole 16 and comes to press on a flexible member ensuring electrical contact between it and a high output rod 74 tension of the coil, the flexible member possibly being a coil spring, a leaf spring, conductive rubber or any other similar element.
  • the electrical connection inside the cavity 12 is provided by rigid wires 76 which, as shown in FIG. 9, connect the conductive core 56 of a cable 3 to a connection pad 78 placed in the hole 16 for connection to the coil.
  • the only placement of the connector 2 on the coil 1, that is to say the fitting of the sleeves 22 on the bosses 24 of this coil and the snap-fastening of the head 48 of the member locking in the slot 46 ensures the simultaneous connection of the four ignition cables.
  • the locking chamber 42 is closed at its upper part by a cover made of transparent material which allows at any time to check the locking of the head 48 on the bottom 44, that is to say the relative positions of the connector 2 and coil 1.
  • this comprises a connector 82 which, as shown in FIGS. 10 and 11, comprises a hollow body 84 whose internal cavity 86 is closed at the same time at its upper part and at its bottom.
  • This hollow body is provided at one of its ends with outlets for the ignition cables 3, 4, 5 and 6.
  • the cables extend inside the cavity 86 each to the right of a connection orifice to a high voltage output of a coil 81 and these cables are embedded in an insulating resin which fills the cavity 86 by isolating them from each other and from the wall of the connector 82.
  • the body 84 is also extended at its lower part by sleeves 88 for interlocking each on one of the high voltage outputs 90 of the coil 81.
  • the sleeves 88 have a conical shape and interlock on bosses 90 also of frustoconical shape from which protrudes a connecting rod 92 surrounded by a spring 94 in contact with the cable 3, 4, 5 or 6, by means of a crimped ring 96.
  • the body 84 of the connector 82 has at its end opposite to the outputs of the ignition cables a recess 98 which widens outwards, the side walls 100 of which are connected together by a plate 102.
  • the plate 102 is pierced with 'a hole 104 for passage of the elastically deformable head 106 of a hooking rod 108 integral with the coil 81.
  • the connection between the connector 82 and the coil 81 is thus obtained by snap-fastening of the conical head 106 of the rod 108 in hole 104 of the plate 102. As soon as the head 106 has resumed its initial shape, it abuts on the edge of the hole 104 and prohibits the separation of the connector 82 and the coil 81.
  • the fitting of the sleeves 88 on the bosses 90 and the locking of the head 106 in the hole 104 is carried out by the same operation.
  • the head 106 is visible from the outside at all times so that the reality of the locking can be checked.
  • the hole 104 can, if desired, be offset relative to the whole of the body 84, which increases the security of the accuracy of the connection.
  • locking means which are not visible from the outside, provided that these can be controlled, for example by touch. If the control is positive, it is certain that all the sleeves are well fitted on their respective bosses and therefore that all the ignition cables are well connected.
  • the cables ensuring the internal electrical connections can be replaced by a printed circuit, rigid wires or any other similar element.
  • each of the ignition cables 3, 4, 5 and 6 has a length which corresponds to the distance which separates the connector 2, 82 from the corresponding spark plug 8 so that it can only be connected to the appropriate spark plug . Any permutation or intervention of the wire connection is thus prohibited.
  • FIGs 12 to 15 illustrate another embodiment of the invention and, more particularly, of the locking device.
  • Figure 15 is a vertical sectional view corresponding to Figure 3 and in which the similar elements have the same references;
  • Figures 12 to 14 illustrate the operation of this locking device.
  • this locking device is arranged in the same manner as that of the embodiment of Figures 2 and 3. It essentially comprises a rigid element 111 carried by the coil, a flexible element 112 secured to the connector 2 and a locking key 113.
  • the rigid element 111 is generally made of insulating material and it is integral with the coil 1; it has two walls 121 and 122 which are arranged face to face and which each have an internal shoulder 123 directed towards the opposite wing so as to delimit a locking housing 116.
  • the flexible locking element 112 which is integral with the connector 2 also comprises two wings 124 and 125 which face each other; the distance separating the two external faces of the wings 124 and 125 corresponds to the internal distance between the upper parts of the walls 121 and 122 of the rigid part 111; these wings 124 and 125 have at their lower end an external lug 115 which is intended to cooperate with the shoulders 123.
  • the two wings 124 and 125 also each have at their upper end an internal notch 114 which is intended to cooperate with a hollow part 126 of the locking key 113.
  • This locking key 113 has a shape adapted to be able to enter the housing delimited by the two wings 124 and 125 of the flexible element 112.
  • This locking key 113 has two external shoulders 127 intended to come to bear on a notch 114 of the element flexible 112 so as to prevent the key 113 from coming out of the housing delimited by the wings 124 and 125.
  • a hollow portion 130 is provided just above the shoulder 127 in the outside of the key 113.
  • this locking key 113 also has a recess in its outside face. 126 which is also intended to cooperate with the notch 114 of the wings 124 and 125.
  • Figures 12 to 14 illustrate the manner in which the connector 2 is locked on the coil 1.
  • the assembly is shown in the position before connection.
  • the key 113 is held between the wings 124 and 125 by means of the shoulders 127 which abut on the notches 114 of the wings 124 and 125 which are housed in the recesses 130 so as to block the key upwards to prevent it to go out and prevent it from falling down.
  • the flexible part is put in the connection position (FIG. 13)
  • the two wings 124 and 125 of the flexible element 112 penetrate between the two rigid walls 121 and 122 to reach the position shown in FIG. 13 where the lugs 115 have reached the housing 116 delimited by the shoulders 123.
  • the locking element has not changed position relative to the flexible element 112.
  • this locking element 113 When one pushes on this locking element 113, it arrives in the position shown in FIG. 14 in which the hollow element 126 cooperates with the notch 114.
  • the shapes of the notch 114 and of the hollow part 126 are adapted to withstand the vibrations of the motor while allowing unlocking by pulling on the connector 2.
  • the visual or tactile control of the locking position shown in FIG. 14 makes it possible to verify that the 'we are in the locked position.
  • the ignition device according to the invention can be used on internal combustion engines having more or less than four cylinders, this number of cylinders having been given only by way of example.

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  • 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)
EP19910400814 1990-03-26 1991-03-26 Zündanlage für innere Brennkraftmaschine Expired - Lifetime EP0449725B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9003829 1990-03-26
FR9003829A FR2660020B1 (fr) 1990-03-26 1990-03-26 Dispositif d'allumage pour moteur a combustion interne.

Publications (2)

Publication Number Publication Date
EP0449725A1 true EP0449725A1 (de) 1991-10-02
EP0449725B1 EP0449725B1 (de) 1994-11-30

Family

ID=9395108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910400814 Expired - Lifetime EP0449725B1 (de) 1990-03-26 1991-03-26 Zündanlage für innere Brennkraftmaschine

Country Status (3)

Country Link
EP (1) EP0449725B1 (de)
DE (1) DE69105325T2 (de)
FR (1) FR2660020B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120055433A1 (en) * 2010-09-02 2012-03-08 Prestolite Wire, Llc High energy ignition distributor cap
KR20210028568A (ko) * 2019-09-04 2021-03-12 만 에너지 솔루션즈 에스이 내연 기관

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690013B1 (fr) * 1992-04-13 1997-08-22 Electricfil Connecteur pour circuit d'allumage de moteur a combustion interne, a explosions et a allumage commande.
DE19849505C2 (de) * 1998-10-27 2000-10-05 Bremi Auto Elektrik Ernst Brem Hochspannungsverbindungselement

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706067A (en) * 1970-12-11 1972-12-12 Gen Motors Corp Electrical connector assembly
US4225206A (en) * 1979-08-06 1980-09-30 General Motors Corporation Electrical connector for electromagnetic fuel injector
GB2113482A (en) * 1982-01-11 1983-08-03 Bard Inc C R Electrical connectors
DE3542997A1 (de) * 1984-12-14 1986-06-19 Volkswagen AG, 3180 Wolfsburg Zuendvorrichtung fuer eine fremdgezuendete brennkraftmaschine
DE3609475A1 (de) * 1985-03-23 1987-04-09 Sumitomo Wiring Systems Verbindungsvorrichtung fuer das zuendungssystem von kraftfahrzeugen
US4702542A (en) * 1986-05-14 1987-10-27 Honeywell Information Systems Inc. Latch and lock electrical connector housing
DE3623199A1 (de) * 1986-07-10 1988-02-04 Opel Adam Ag Zuendleitungsanordnung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60190673A (ja) * 1984-03-09 1985-09-28 Nippon Denso Co Ltd 内燃機関用点火装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706067A (en) * 1970-12-11 1972-12-12 Gen Motors Corp Electrical connector assembly
US4225206A (en) * 1979-08-06 1980-09-30 General Motors Corporation Electrical connector for electromagnetic fuel injector
GB2113482A (en) * 1982-01-11 1983-08-03 Bard Inc C R Electrical connectors
DE3542997A1 (de) * 1984-12-14 1986-06-19 Volkswagen AG, 3180 Wolfsburg Zuendvorrichtung fuer eine fremdgezuendete brennkraftmaschine
DE3609475A1 (de) * 1985-03-23 1987-04-09 Sumitomo Wiring Systems Verbindungsvorrichtung fuer das zuendungssystem von kraftfahrzeugen
US4702542A (en) * 1986-05-14 1987-10-27 Honeywell Information Systems Inc. Latch and lock electrical connector housing
DE3623199A1 (de) * 1986-07-10 1988-02-04 Opel Adam Ag Zuendleitungsanordnung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 37 (M-453)[2094], 14 février 1986; & JP-A-60 190 673 (NIPPON DENSO K.K.) 28-09-1985 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120055433A1 (en) * 2010-09-02 2012-03-08 Prestolite Wire, Llc High energy ignition distributor cap
KR20210028568A (ko) * 2019-09-04 2021-03-12 만 에너지 솔루션즈 에스이 내연 기관
US11181071B2 (en) * 2019-09-04 2021-11-23 Man Energy Solutions Se Internal combustion engine

Also Published As

Publication number Publication date
FR2660020B1 (fr) 1994-07-22
DE69105325T2 (de) 1995-04-27
EP0449725B1 (de) 1994-11-30
DE69105325D1 (de) 1995-01-12
FR2660020A1 (fr) 1991-09-27

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