US3915542A - Electronic ignition device for combustion engines of motors vehicles - Google Patents

Electronic ignition device for combustion engines of motors vehicles Download PDF

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Publication number
US3915542A
US3915542A US433946A US43394674A US3915542A US 3915542 A US3915542 A US 3915542A US 433946 A US433946 A US 433946A US 43394674 A US43394674 A US 43394674A US 3915542 A US3915542 A US 3915542A
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United States
Prior art keywords
ignition
plug element
coupling element
ignition system
plug
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Expired - Lifetime
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US433946A
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English (en)
Inventor
Igor Schou-Kjeldsen
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South East European Purchasing and Export Establishment
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South East European Purchasing and Export Establishment
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
    • B60R25/045—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor by limiting or cutting the electrical supply to the propulsion unit

Definitions

  • ABSTRACT An electronic ignition device for combustion engines of motor vehicles comprising a preliminary stage and an output stage, each such stage having at least one active semiconductor element and that at least the active semiconductor element of the preliminary stage can be removed from the ignition device.
  • the present invention relates to a new and improved electronic ignition device for combustion engines of motor vehicles or the like.
  • Another and more specific object of the present in vention aims at the provision of a new and improved construction of an electronic ignition device for motor vehicles having internal combustion engines wherein there is reliably insured that unauthorized use of the vehicle will not occur.
  • the ignition device of this development is manifested by the features that there is provided a preliminary stage and an output stage, wherein for each such stage there is provided at least one active semiconductor element, and that at least the active semiconductor element of the preliminary stage can be removed or detached from the ignition device.
  • FIG. 1 illustrates a conventional construction of coil ignition installation
  • FIG. 2 is an exemplary embodiment of the invention
  • FIG. 3 is a plan view of a portion of the ignition device showing the plug element which can be removed therefrom but here depicted in its inserted position;
  • FIG. 4 is a front view of the plug element which can be removed from the ignition device of FIG. 2 in its i nserted position;
  • FIG. 5 is a plan view of possible constructional forms of the contact pins of the plug element.
  • FIG. 1 schematically shows a coil ignition installation of known construction.
  • the positive terminal or pole la of a not particularly illustrated voltage source 1 the negative terminal or pole lb of which is connected with ground, is electrically coupled via an ignition switch 2 with the primary winding 3a of an ignition coil 3.
  • This primary winding 3a is periodically connected with the negative tenninal 1b of the voltage source 1 in known manner through the agency of an interrupter 4-.
  • the voltage pulses generated in the primary winding 30 are amplified at the secondary winding. 3b of the ignition coil 3 and delivered to the ignition distributor 5 which, in likewise conventional manner,- distributes the ignition impulses to the individual spark or ignition plugs 6.
  • FIG. 2 those components or parts which correspond to the parts or components illustrated in FIG. 1 have been designated by the same reference numerals.
  • the primary winding 3:: of the ignition coil is no longer connected at one end with the ignition switch 2 and at the other end with the interrupter 4.
  • the interrupter 4 is electrica1ly coupled via two resistors 7 and 8, forming a voltage divider, with the ignition switch 2. At the junction point of such resistors 7 and 8 there is connected the base 9a of a transistor 9. The collector 9b of this transistor 9 is electrically coupled via the ignition switch 2 with the terminal 1a and the emitter 9c is connected with the base 10a of a second transistor 10. A Zener diode Ill is connected parallel to the resistor 8.
  • the emitter 10b of the transistor 10 is connected with the collector 9b of the transistor 9.
  • Thefcolle ctor 10c of the transistor 10 is connected via a glow lamp 12 at one end of the primary winding 30, the other end of which is connected to ground, as shown.
  • a diode 13 is connected parallel to the. emittercollector path of the transistor l0. Additionally, the base 100 of the transistor 10 is connected via a resistor 14 with the terminal lb.
  • Both of the diodes 11 and '13 serve to respectively stabilize and suppress voltage peaks.
  • the glow lamp 12 in the current circuit of the primary winding 3a serves the purpose of limiting the cur rent in .the event that with the ignition switch 2 closed and with the interrupter 4 remaining in its closed position there flows a continuous current.
  • the lamp 12 which burns or glows in this case prevents any damage from arising owing to such continuous current and additionally can be used as a warning indicator in the event that it is arranged at the dashboard or instrument panel of the vehicle.
  • the glow lamp 12 is not turned-on owing to its low cold resistance and also does not influence the currentflowing through the primary winding 3a.
  • the transistor 9 is therefore a component of the preliminary stage or prestage, whereas the power transistor 10 is a component of the output stage.
  • transistor 9 of the preliminary stage alone or in conjunction with certain other components can be removed from the device.
  • the resistor 8 and the diode 11 are assembled or grouped together into a detachable plug-in or plug element 15 which has been shown in phantom lines in FIG. 2.
  • the aforementioned components are for instance molded in a small plate formed of plastic which is equipped with contact pins 16, as best seen by referring to FIG. 3.
  • the resistor 7 is preferably arranged at the interrupter component 4 such that it is not accessible from the outside. In this way it is possible to prevent that the engine of the vehicle will be started-up when the plug element 15 has been removed by carrying out some type of short-circuiting manipulation, since the voltage pulses which are possible in such type short-circuited circuit are much too small owing to the resistor 7.
  • FIG. 3 there is illustrated a coupling element 18 with inserted plug element 15, and which coupling element 18 has been mounted at the dashboard or instrument panel 17 of an automobile 'or vehicle.
  • the plug element 15 is equipped with contact pins 16, the number of which is greater than the number necessary for the connection of the components.
  • contact pins 16 the number of which is greater than the number necessary for the connection of the components.
  • contact elements 19 which in arrangement and construction correspond to the Contact pins 16. Of these contact elements 19 those, which cooperate with the contact pins 16 which are connected with the components 8, 9 and 11, are connected at three connection lines or conductors 20 which lead to the part of the ignition device which is fixedly mounted at the automobile or vehicle. This fixedly mounted part or component encompasses all of the elements which are located outside of the phantom boundary lines shown in FIG. 2.
  • the wiring of the plug element 15 and the coupling element 18 can be constituted different for each ignition device while making use of all of the various combination possibilities, so that with a single plug element it is only possible to start-up the engine of the associated vehicle.
  • FIG. 4 there is shown in front view the plug element 15 which has been inserted into the coupling element 18.
  • the plug element plate At the top of the plug element plate there are provided different constructed or formed projections 21 which cooperate with appropriately configured recesses 22 at the coupling element 18. Due to different construction and arrangement of the projections 21 and the recesses 22 it is possible to further prevent that a given plus element 15 can be inserted into different coupling elements 18. Here also it would be readily possible to reverse the arrangement i.e., to form the projections at the coupling element and the recesses at the plug element.
  • FIG. 5 shows different possible constructional forms of the contact pins 16, and wherein the contact elements 19 are to be correspondingly constructed.
  • the dimensions of the small plate-shaped plug element permits this plug element to be carried away without any difficulty by the driver when he leaves his parked vehicle.
  • transistor 9 has been shown as a npn-transistor and the transistor 10 as a pnp-transistor, it is to be understood that it is also possible to use two similar type pnpor npn-transistors.
  • the circuit depicted in FIG. 2 in such case is to be correspondingly or appropriately changed 'as will be readily understood by those skilled in the electronics art.
  • An electronic ignition system for a vehicle which is provided with an internal combustion engine, said ignition system comprising a power stage connected to an ignition coil and a switching stage for controlling the power stage, said switching stage being controlled by an ignition time detector, both the power stage and the switching stage possessing at least one transistor which is essential to the operation of said system, the transistor of the switching stage being encapsulated within a support element constructed as a plug element, said plug element being removably electrically connected by means of a coupling element to the remaining components of the ignition system through given ones of first contact members on the plug element which cooperate with given ones of second Contact members on the coupling element, such that upon removal of the plug element from the coupling element the transistor of the switching stage is electrically disconnected from the ignition system to disable the ignition system and thereby prevent theft of the vehicle, said coupling element being capable of being fixedly mounted at a location on the vehicle remote from the power stage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Bipolar Transistors (AREA)
US433946A 1973-01-24 1974-01-16 Electronic ignition device for combustion engines of motors vehicles Expired - Lifetime US3915542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH98873A CH552489A (de) 1973-01-24 1973-01-24 Elektronische zuendvorrichtung an einem kraftfahrzeug fuer dessen verbrennungsmotor.

Publications (1)

Publication Number Publication Date
US3915542A true US3915542A (en) 1975-10-28

Family

ID=4199856

Family Applications (1)

Application Number Title Priority Date Filing Date
US433946A Expired - Lifetime US3915542A (en) 1973-01-24 1974-01-16 Electronic ignition device for combustion engines of motors vehicles

Country Status (12)

Country Link
US (1) US3915542A (cs)
JP (1) JPS5644261B2 (cs)
BR (1) BR7400448D0 (cs)
CA (1) CA1032596A (cs)
CH (1) CH552489A (cs)
CS (1) CS170113B2 (cs)
DD (1) DD113085A5 (cs)
ES (1) ES422585A1 (cs)
FR (1) FR2214826B1 (cs)
GB (1) GB1437049A (cs)
IT (1) IT1003467B (cs)
SU (1) SU697059A3 (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224917A (en) * 1977-02-02 1980-09-30 Hitachi, Ltd. Ignition device
US4331122A (en) * 1979-07-06 1982-05-25 Robert Bosch Gmbh Adapter for improving the operation of electrical circuits in a motor vehicle
US4781626A (en) * 1982-09-24 1988-11-01 Amp Incorporated Keying system for connector families
EP0366201A1 (en) * 1988-10-24 1990-05-02 Antoon Jacobus Oostveen Theft protection device
US4945872A (en) * 1988-08-19 1990-08-07 Embry Paul E Theft prevention apparatus
FR2739417A1 (fr) * 1995-09-29 1997-04-04 Honda Motor Co Ltd Dispositif d'allumage pour moteurs de vehicules

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154994A (en) * 1977-06-29 1979-05-15 T-Bar Incorporated Patch module
DE3008066A1 (de) * 1980-03-03 1981-09-17 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur zuendung von brennkraftmaschinen
GB2274678A (en) * 1992-05-16 1994-08-03 Gary Hanlon Vehicle anti-theft wiring plug and socket

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136307A (en) * 1961-12-18 1964-06-09 Joseph D Richard Vehicle starting system
US3222534A (en) * 1961-10-11 1965-12-07 Charles H Scott Electrical element and switching means
US3720284A (en) * 1970-10-26 1973-03-13 P Myers Theft-prevention ignition system
US3791364A (en) * 1970-06-03 1974-02-12 Mitsubishi Electric Corp Ignition system for internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4325686Y1 (cs) * 1965-12-09 1968-10-28

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222534A (en) * 1961-10-11 1965-12-07 Charles H Scott Electrical element and switching means
US3136307A (en) * 1961-12-18 1964-06-09 Joseph D Richard Vehicle starting system
US3791364A (en) * 1970-06-03 1974-02-12 Mitsubishi Electric Corp Ignition system for internal combustion engine
US3720284A (en) * 1970-10-26 1973-03-13 P Myers Theft-prevention ignition system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224917A (en) * 1977-02-02 1980-09-30 Hitachi, Ltd. Ignition device
US4331122A (en) * 1979-07-06 1982-05-25 Robert Bosch Gmbh Adapter for improving the operation of electrical circuits in a motor vehicle
US4781626A (en) * 1982-09-24 1988-11-01 Amp Incorporated Keying system for connector families
US4945872A (en) * 1988-08-19 1990-08-07 Embry Paul E Theft prevention apparatus
EP0366201A1 (en) * 1988-10-24 1990-05-02 Antoon Jacobus Oostveen Theft protection device
FR2739417A1 (fr) * 1995-09-29 1997-04-04 Honda Motor Co Ltd Dispositif d'allumage pour moteurs de vehicules

Also Published As

Publication number Publication date
DD113085A5 (cs) 1975-05-12
DE2307725A1 (de) 1974-08-15
CS170113B2 (cs) 1976-08-27
FR2214826A1 (cs) 1974-08-19
CH552489A (de) 1974-08-15
SU697059A3 (ru) 1979-11-05
GB1437049A (en) 1976-05-26
JPS49104038A (cs) 1974-10-02
IT1003467B (it) 1976-06-10
BR7400448D0 (pt) 1975-08-26
FR2214826B1 (cs) 1979-10-19
DE2307725B2 (de) 1976-05-26
JPS5644261B2 (cs) 1981-10-19
CA1032596A (en) 1978-06-06
ES422585A1 (es) 1976-05-16

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