EP0383768A1 - Ignition device for internal combustion engines. - Google Patents
Ignition device for internal combustion engines.Info
- Publication number
- EP0383768A1 EP0383768A1 EP19880905693 EP88905693A EP0383768A1 EP 0383768 A1 EP0383768 A1 EP 0383768A1 EP 19880905693 EP19880905693 EP 19880905693 EP 88905693 A EP88905693 A EP 88905693A EP 0383768 A1 EP0383768 A1 EP 0383768A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transistor
- connection
- ignition device
- stage
- emitter
- 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
-
- 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
- F02P15/12—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 means for strengthening spark during starting
-
- 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
- F02P3/04—Layout of circuits
- F02P3/0407—Opening or closing the primary coil circuit with electronic switching means
- F02P3/0435—Opening or closing the primary coil circuit with electronic switching means with semiconductor devices
-
- 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
- F02P3/04—Layout of circuits
- F02P3/05—Layout of circuits for control of the magnitude of the current in the ignition coil
- F02P3/051—Opening or closing the primary coil circuit with semiconductor devices
-
- 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
- F02P3/04—Layout of circuits
- F02P3/055—Layout of circuits with protective means to prevent damage to the circuit, e.g. semiconductor devices or the ignition coil
- F02P3/0552—Opening or closing the primary coil circuit with semiconductor devices
Definitions
- the invention relates to an ignition device according to the type of the main claim, which is known from D ⁇ -A-28 25 830.
- the primary winding of an ignition transformer is connected to the collector terminal of the transistor, while the emitter terminal of the transistor is connected to the ground terminal, possibly via a current measuring resistor.
- high power losses occur at the final stage of the ignition device, which have to be dissipated from the collector connection to the heat sink.
- the collector connection must be electrically insulated from the heat sink during the clamp voltage occurring during the shutdown process.
- the ignition device according to the invention with the characterizing features of the main claim has the advantage that a large power loss can be reliably discharged through the use of a pnp transistor in the output stage of the ignition device and the thermally and electrically conductive connection of its collector connection to the earth connection of the ignition device can. By saving insulating layers between the collector connection and the ground connection, the structure of the ignition device is also simplified and thereby cheaper. Finally, the predominant part of the ignition device can be integrated monolithically in a particularly advantageous manner, as a result of which large numbers of items with narrow electrical characteristics can also be produced.
- FIG. 1 shows a block diagram of the ignition device
- FIG. 2 shows the circuit diagram of a part of the ignition device with the output stage and the decoupling means
- FIG. 3 shows a further exemplary embodiment of the ignition device with illustration of the output stage and the decoupling means
- FIG. 4 shows the ignition device with an illustration of a Reclosure lock in the final stage and a decoupling diode in the preliminary stage
- FIG. 5 shows a circuit diagram of an exemplary embodiment of the final stage of the ignition device using monolithically integrated technology
- FIG. 6 shows a cross section through a semiconductor substrate. Description of the invention
- FIG. 1 shows the ignition device 3, shown essentially as a block diagram, in particular for a spark-ignition internal combustion engine, with an ignition transformer 1 having a primary winding 1 a and a secondary winding 1 d, to whose primary winding 1 a a DC voltage source can be applied.
- the ignition device 3 comprises a current control device for controlling the current flowing through the primary winding 1 a of the ignition transformer 1.
- This current control device consists of a preliminary stage 3a and a final stage 3c.
- the output stage 3c essentially consists of a transistor T100 of a first conductivity type, namely a pnp transistor or pnp Darlington transistor, the collector of which is connected to the ground connection of the ignition device 3.
- Decoupling means 3b are provided between the preliminary stage 3a and the final stage 3c, which decouple the preliminary stage 3a from the final stage 3c and which in particular protect the preliminary stage 3a from the high clamp voltage that occurs at the final stage 3c during the switch-off process.
- the decoupling means 3b comprise a transistor T20 of a second conductivity type, the collector connection of which is connected to the base connection of the transistor T100 provided in the output stage 3c, and the emitter connection of which is connected to the ground connection of the ignition device 3 ⁇ are.
- the base connection of the transistor 20 is connected to the preamplifier 3a of the ignition device 3 and is controlled by it.
- the decoupling means comprise, in addition to the transistor T20, whose collector terminal is connected to the base terminal of the transistor TIOO via a resistor R21, a further transistor T25 which is connected in parallel to the emitter base path of the Transistor T20 is connected.
- the collector terminal of transistor T25 is thus connected to the base terminal of transistor T20, while the emitter terminal of transistor T25 is connected to the ground terminal of the ignition device, to which the emitter terminal of transistor T20 is also connected via resistor E22.
- the resistor R22 has the function of a current sensor resistor, ie, when there is a current flowing through the transistor T20 and the resistor E22, a voltage drop occurs across the resistor R22, which can be used for control purposes.
- the base connection of the transistor T25 lies at the tap of a voltage divider formed from the resistors R23 and R24, which is connected between the base connection of the transistor T20 and the ground connection of the ignition device.
- the partial resistance R24 of the voltage divider R23, R24 which is connected to the ground connection of the ignition device, is expediently designed to be able to exactly determine the base voltage of the transistor T25.
- the adjustment is carried out in a particularly advantageous manner by connecting suitable additional resistors in parallel, which are initially connected in series with Zener diodes. Overloading the zener diodes destroys them and the additional resistors are connected in parallel to the partial resistor R24.
- a ittermitter current regulation for T100 can be realized with T30 and the resistors R31, R32.
- the decoupling means comprise a diode D41, the anode connection of which with the emitter connection of a drive transistor T40 in the preliminary stage and the cathode connection of which has the base connection of transistor T100 and via the load resistor R42 of transistor T40 are connected to the ground connection of the ignition device.
- the diode must have at least the blocking capacity of the clamp voltage occurring on the T100.
- the ignition device has the particular advantage that the transistor T100 arranged in the output stage 3c is directly conductively connected with its collector connection to the ground connection and can thus be mounted directly on a heat sink connected to the ground connection.
- the dissipation of the power loss occurring during the operation of the ignition device is thus made extremely easier, since there is no need to arrange insulating layers that prevent heat flow between the collector connection of the transistor TIOO and a heat sink to be insulated from the collector connection.
- the decoupling means described above are provided which prevent the pre-stage 3a from being impaired by the high clamp voltage that occurs when the transistor TIOO is switched off. It must also be ensured that after a scheduled shutdown of the transistor T100 arranged in the output stage 3c, its uncontrolled restarting is reliably prevented.
- transistor T43 (FIG. 4), the collector connection of which is connected to the base connection of transistor T100, the emitter connection of which is connected to the emitter connection of transistor TIOO, and the base connection of which is connected via a resistor R44 to the positive connection of the DC voltage source.
- This circuit arrangement ensures that the transistor T43 is only activated and switched through via its base connection if the base connection has a more negative potential than the emitter connection of the transistor T43.
- the clamp voltage which is in the order of magnitude of approximately 400 volts, occurs, which could lead to an unintentional restart of the transistor T100.
- a resistor R12 is arranged for the purpose of current measurement between the positive connection of the DC voltage source and the connection of the primary winding 1a of the ignition transformer 1 remote from the ground. When current flows through the primary winding 1a, a voltage drops across this resistor R12, which voltage can be fed to the preliminary stage 3a for control purposes.
- a current measuring resistor R12 ' is arranged between the emitter connection of the transistor T100 and the ground-side connection of the primary winding la of the ignition transformer.
- the voltage drop across the measuring resistor R12 ' is tapped via two high-impedance resistors R13, R14 and fed to input connections of the preliminary stage 3a which are protected by Zener diodes ZI, Z2 connected to ground.
- the high voltage occurring at the two phases of the measuring resistor R12 * during the switch-off phase is decoupled via R13, R14, ZI and Z2.
- a further transistor T30 is provided, which is connected in parallel with the series connection of the emitter base section of the transistor T100 and the current measuring resistor R12 '.
- the emitter connection of the transistor T30 is connected to the ground-side connection of the primary winding la of the ignition transformer 1, its collector connection to the base connection of the transistor T100 and finally its base connection to the tap of a voltage divider R31, R32 located between the emitter and collector connection of the transistor T30.
- the partial resistor R32 closer to the ground connection is also designed to be adjustable in this voltage divider R31, R32.
- preliminary stage 3a, final stage 3c and the decoupling means 3b of the ignition device 3 are implemented using monolithically integrated technology. This means that even in large-scale production, the scattering can be extremely low achieve essential electrical characteristics.
- the current measuring resistor R12 ' is expediently arranged as a distributed resistor on the emitter teeth of the emitter region of the transistor T100, as a result of which a good current distribution is ensured over the entire active emitter region of the transistor TIOO.
- the decoupling means shown in the exemplary embodiment according to FIG. 3 can also be integrated with the transistors T20 and T25.
- the transistor T43 provided in the exemplary embodiment according to FIG. 4 of the ignition device and preventing an uncontrolled reclosing of the transistor TIOO can also be monolithically integrated as a lateral pnp transistor in the base-emitter path of the transistor TIOO arranged in the output stage 3c.
- Both the control stage 3a and the transistors T20, T25 or the decoupling diode D41 provided for decoupling purposes must be brought to the thick-film circuit in the form of separate chips and connected to the rest of the circuit by means of bond connections.
- the resistors R33, R44 and R12 can be implemented as thick film resistors.
- FIGS. 5 and 6 show the configuration of the output stage 3c of the ignition device 3 using monolithically integrated technology.
- 5 shows the circuit diagram of the final stage, while FIG. 6 shows a cross section through a semiconductor substrate.
- the output stage transistor T100 is designed as a two-stage Darlington transistor with the components T101 and T102.
- the short-circuit designed as a pnp lateral transistor transistor marked with the reference numeral 43.
- the resistors R50 and R51 shown in the circuit diagram according to FIG. 5 are integrated in a manner known per se to the person skilled in the art and are therefore no longer shown in FIG. FIG.
- FIG. 6 shows with reference numeral 60 a high-resistance p-type substrate into which n-type base troughs 62, 63 and 64 are diffused. Highly doped p-type emitter zones 65, 66, 67 and 68 are in turn diffused into the aforementioned base troughs.
- the base wells 62 and 63 represent the bases of the two transistors T101 and T102 belonging to the Darlington, while 64 represents the base well comprising the lateral short-circuit transistor T43.
- the additional wells 69, 70 and 71 consist of n-type silicon highly doped with phosphorus.
- the transistor arrangement thus comprises the three outer connecting lands 612 (base of the Darlington transistor), 617 (base of the lateral transistor) and 615 (emitter of the Darlington transistor).
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
Dans un dispositif d'allumage (3), notamment pour moteurs à combustion interne à allumage extérieur, un dispositif de commande du courant composé d'un étage préliminaire (3a) et d'un étage final (3c) commande le passage du courant à travers l'enroulement primaire (1a) d'un transformateur d'allumage (1). L'étage final (3c) du dispositif de commande du courant comprend un transistor pnp (T100), dont la borne collecteur est directement connectée à la borne de mise à la masse du dispositif d'allumage afin d'améliorer la sortie de la ligne de pertes. Des éléments de découplage (3b) qui protègent l'étage préliminaire (3a) de la tension de retenue sont agencés entre l'étage préliminaire (3a) et l'étage final (3c).In an ignition device (3), in particular for internal combustion engines with external ignition, a current control device composed of a preliminary stage (3a) and a final stage (3c) controls the passage of current to through the primary winding (1a) of an ignition transformer (1). The final stage (3c) of the current control device comprises a pnp transistor (T100), the collector terminal of which is directly connected to the ground terminal of the ignition device in order to improve the output of the line of losses. Decoupling elements (3b) which protect the preliminary stage (3a) from the restraining voltage are arranged between the preliminary stage (3a) and the final stage (3c).
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873735631 DE3735631A1 (en) | 1987-10-21 | 1987-10-21 | IGNITION DEVICE FOR A COMBUSTION ENGINE |
DE3735631 | 1987-10-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0383768A1 true EP0383768A1 (en) | 1990-08-29 |
EP0383768B1 EP0383768B1 (en) | 1993-05-19 |
Family
ID=6338785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88905693A Expired - Lifetime EP0383768B1 (en) | 1987-10-21 | 1988-07-07 | Ignition device for internal combustion engines |
Country Status (5)
Country | Link |
---|---|
US (1) | US5050573A (en) |
EP (1) | EP0383768B1 (en) |
JP (1) | JPH03500673A (en) |
DE (2) | DE3735631A1 (en) |
WO (1) | WO1989003937A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6785720B1 (en) | 1998-05-23 | 2004-08-31 | Samsung Electronics Co., Ltd. | Method for connecting to server devices in browser-based home network apparatus therefor |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3839039A1 (en) * | 1988-11-18 | 1990-05-23 | Bosch Gmbh Robert | IGNITION STAGE OF A TRANSISTOR IGNITION SYSTEM |
IT1239867B (en) * | 1990-01-26 | 1993-11-15 | Weber Srl | IDENTIFICATION SYSTEM OF THE PHASES OF AN ENDOTHERMAL ENGINE |
JP2568813Y2 (en) * | 1992-02-19 | 1998-04-15 | 三菱電機株式会社 | Ignition device for internal combustion engine |
US5529046A (en) * | 1995-01-06 | 1996-06-25 | Xerox Corporation | High voltage ignition control apparatus for an internal combustion engine |
DE19624530A1 (en) * | 1996-06-20 | 1998-01-02 | Bosch Gmbh Robert | Circuit arrangement of an ignition output stage, in particular for an ignition circuit of a motor vehicle |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1447597A (en) * | 1965-09-16 | 1966-07-29 | Rca Corp | Transistor ignition circuits, in particular for motor vehicles |
FR2217566A1 (en) * | 1973-02-10 | 1974-09-06 | Lucas Electrical Co Ltd | |
US3945362A (en) * | 1973-09-17 | 1976-03-23 | General Motors Corporation | Internal combustion engine ignition system |
DE2531337C3 (en) * | 1975-07-12 | 1978-11-23 | Robert Bosch Gmbh, 7000 Stuttgart | Ignition device for an internal combustion engine |
US4106462A (en) * | 1976-03-18 | 1978-08-15 | General Electric Company | Ignition system control circuit |
GB1594348A (en) * | 1976-10-28 | 1981-07-30 | Lucas Industries Ltd | Ignition systems for internal combustion engines |
DE2747819A1 (en) * | 1977-10-25 | 1979-04-26 | Siemens Aag | PROCEDURE AND CIRCUIT ARRANGEMENT FOR CONTROLLING THE PRIMARY CURRENT IN COIL END SYSTEMS OF MOTOR VEHICLES |
JPS57206776A (en) * | 1981-06-16 | 1982-12-18 | Nissan Motor Co Ltd | Plasma ignition device |
DE3231125A1 (en) * | 1982-08-21 | 1984-02-23 | Robert Bosch Gmbh, 7000 Stuttgart | Ignition system for internal combustion engines |
JPS5985483A (en) * | 1982-11-04 | 1984-05-17 | Otsupama Kogyo Kk | Noncontact igniter for internal-combustion engine |
US4480624A (en) * | 1983-08-17 | 1984-11-06 | Outboard Marine Corporation | Capacitor discharge ignition system for internal combustion engine |
JPH0676791B2 (en) * | 1986-03-03 | 1994-09-28 | 日本電装株式会社 | Ignition device for internal combustion engine |
JPH0726607B2 (en) * | 1987-02-23 | 1995-03-29 | 株式会社日立製作所 | Electronic distribution ignition device for multi-cylinder internal combustion engine |
JPH0299763A (en) * | 1988-10-07 | 1990-04-11 | Mitsubishi Electric Corp | Ignitor for internal combustion engine |
IT1223932B (en) * | 1988-11-23 | 1990-09-29 | Marelli Autronica | IGNITION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE USING THYRISTORS |
-
1987
- 1987-10-21 DE DE19873735631 patent/DE3735631A1/en not_active Withdrawn
-
1988
- 1988-07-07 US US07/477,993 patent/US5050573A/en not_active Expired - Fee Related
- 1988-07-07 JP JP63505831A patent/JPH03500673A/en active Pending
- 1988-07-07 EP EP88905693A patent/EP0383768B1/en not_active Expired - Lifetime
- 1988-07-07 DE DE8888905693T patent/DE3881216D1/en not_active Expired - Fee Related
- 1988-07-07 WO PCT/DE1988/000425 patent/WO1989003937A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO8903937A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6785720B1 (en) | 1998-05-23 | 2004-08-31 | Samsung Electronics Co., Ltd. | Method for connecting to server devices in browser-based home network apparatus therefor |
Also Published As
Publication number | Publication date |
---|---|
EP0383768B1 (en) | 1993-05-19 |
WO1989003937A1 (en) | 1989-05-05 |
US5050573A (en) | 1991-09-24 |
DE3881216D1 (en) | 1993-06-24 |
DE3735631A1 (en) | 1989-05-03 |
JPH03500673A (en) | 1991-02-14 |
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