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WO2013038665A1 - Dispositif d'allumage pour moteur à combustion interne - Google Patents

Dispositif d'allumage pour moteur à combustion interne Download PDF

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Publication number
WO2013038665A1
WO2013038665A1 PCT/JP2012/005795 JP2012005795W WO2013038665A1 WO 2013038665 A1 WO2013038665 A1 WO 2013038665A1 JP 2012005795 W JP2012005795 W JP 2012005795W WO 2013038665 A1 WO2013038665 A1 WO 2013038665A1
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WO
WIPO (PCT)
Prior art keywords
circuit
voltage
power supply
internal combustion
combustion engine
Prior art date
Application number
PCT/JP2012/005795
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English (en)
Japanese (ja)
Inventor
佐藤　茂樹
Original Assignee
富士電機株式会社
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 富士電機株式会社 filed Critical 富士電機株式会社
Priority to JP2013533502A priority Critical patent/JP5686197B2/ja
Publication of WO2013038665A1 publication Critical patent/WO2013038665A1/fr

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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
    • F02P3/04—Layout of circuits
    • 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
    • F02P15/001—Ignition installations adapted to specific engine types
    • F02P15/005—Layout of ignition circuits for rotary- or oscillating piston engines
    • 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
    • F02P3/053—Opening or closing the primary coil circuit with semiconductor devices using digital techniques

Definitions

  • the present invention relates to an ignition device for an internal combustion engine that controls a primary current of an ignition coil.
  • an internal combustion engine ignition device described in Patent Document 1 As this type of internal combustion engine ignition device, for example, an internal combustion engine ignition device described in Patent Document 1 is known.
  • a switching circuit for controlling energization / cutoff of a primary current of an ignition coil is a vertical insulated gate bipolar transistor (IGBT) having a Zener diode for voltage clamping between a collector and a gate. It is composed.
  • a control circuit is configured using a dielectric separation substrate in the same chip as the IGBT.
  • the control circuit includes an input hysteresis circuit to which a drive signal is input, a drive circuit that controls the gate of the IGBT based on an output signal of the input hysteresis circuit, a current flowing through the IGBT, and the current becomes a constant value. And a current limiting circuit for controlling the gate of the IGBT. Then, a constant voltage is supplied from a constant voltage circuit that supplies battery voltage to the input hysteresis circuit and the drive circuit.
  • an engine ignition circuit described in Patent Document 2 includes an ignition drive circuit that outputs a power source current to a power transistor as a primary current on / off ignition signal of an ignition coil based on a predetermined ignition signal output from a microcomputer. Then, the first constant voltage circuit lowers 24V of the power source to 12V and supplies it to the ignition drive circuit so that overheating due to the high voltage of the ignition drive circuit does not occur. Furthermore, 12V is dropped to 5V for the microcomputer by the second constant voltage circuit.
  • the power supply voltage is stepped down by one constant voltage circuit.
  • the fluctuation range of the power supply voltage is as follows.
  • the power supply voltage is lowered from 24V to 5V used in the input hysteresis circuit and the drive circuit.
  • the voltage drop and stabilization of the power supply voltage are performed by one constant voltage circuit, there is an unsolved problem that the voltage used in the input hysteresis circuit and the drive circuit cannot be generated accurately.
  • the first and second constant voltage circuits are provided, and the first constant voltage circuit steps down the power supply voltage from 24 V to 12 V, and the second constant voltage.
  • the voltage is stepped down from 12V to 5V by the circuit and lowered to 5V by two constant voltage circuits. For this reason, the step-down voltage in each constant voltage circuit is reduced, and heat generation in the constant voltage circuit can be reduced.
  • the ignition driving circuit is similar to the invention described in Patent Document 1 described above.
  • the invention described in Patent Document 2 uses a constant voltage circuit that drops the power supply voltage 24V to an accurate voltage of 12V, and there is an unsolved problem that the circuit configuration becomes relatively complicated.
  • An object of the present invention is to provide an internal combustion engine ignition device that can be stabilized.
  • a first aspect of an internal combustion engine ignition device is connected to a primary side of an ignition coil based on an ignition signal output from an ignition signal generator that generates an ignition signal.
  • An ignition device for an internal combustion engine having a control circuit for controlling a control terminal of the semiconductor switching element.
  • the control circuit includes a drive circuit that supplies a drive signal to a control terminal of the semiconductor switching element, a current limiting circuit that detects a current flowing through the semiconductor switching element and limits a current flowing through the semiconductor switching element, and the drive And a power supply circuit for supplying power to the current limiting circuit.
  • the power supply circuit includes at least one primary step-down circuit that steps down the power supply voltage to a necessary voltage required by the drive circuit and the current limiting circuit, and at least one that stabilizes the necessary voltage stepped down by the primary step-down circuit. With two regulators.
  • the power supply circuit includes the primary step-down circuit and the regulator one by one, and the stabilized voltage of the regulator is set to the drive circuit and the current limiter. Supply both sides of the circuit.
  • the power supply circuit supplies the one primary step-down circuit and the required voltage output from the primary step-down circuit to the drive circuit and the current limiting circuit. And at least two regulators for supplying to each.
  • the power supply circuit includes at least two series circuits of the primary step-down circuit and the regulator, and the regulator of each series circuit includes the drive circuit and Individually connected to the current limiting circuit.
  • the semiconductor switching element constituting the primary step-down circuit is constituted by a high breakdown voltage element having an offset drain structure, and constituting the regulator Is composed of a low breakdown voltage element having no offset drain structure.
  • the current limiting circuit detects a current flowing through the semiconductor switching element using a shunt resistor.
  • the current limiting circuit detects a current flowing through a current sense terminal provided in the semiconductor switching element.
  • a power supply circuit is configured by combining at least a primary step-down circuit and a regulator, and there is a need for a drive circuit and a current limiting circuit that require power supply so that the primary step-down circuit is not affected by power supply voltage fluctuations. Step down to voltage.
  • the required voltage output from the one step-down circuit is made constant by a regulator and supplied as a power source to the drive circuit and the current limiting circuit. For this reason, an accurate necessary voltage can be formed by absorbing fluctuations in the power supply voltage with the primary step-down circuit and further stabilizing with the regulator.
  • FIG. 1 is a circuit diagram showing an overall configuration of an embodiment of an ignition device for an internal combustion engine of the present invention. It is a circuit diagram showing one embodiment of a primary step-down circuit of a power supply circuit. It is a circuit diagram which shows another embodiment of the primary step-down circuit of a power supply circuit. It is a circuit diagram which shows the whole structure of the modification of this invention. It is a circuit diagram which shows the whole structure of the other modification of this invention. It is a circuit diagram similar to FIG. 1 which shows the modification at the time of using shunt resistance for an electric current detection part.
  • FIG. 5 is a circuit diagram similar to FIG. 4 showing a modification when a shunt resistor is used for the current detection unit.
  • FIG. 6 is a circuit diagram similar to FIG. 5 showing a modification when a shunt resistor is used for the current detection unit.
  • FIG. 1 is a circuit diagram showing the overall configuration of an embodiment of an ignition device for an internal combustion engine according to the present invention.
  • reference numeral 2 denotes an insulated gate bipolar transistor (hereinafter referred to as IGBT) as a semiconductor switching element.
  • the IGBT 2 is driven and controlled by the control circuit 3 connected to the gate.
  • the IGBT 2 is connected in parallel with a current detection power transistor 4 that allows a current corresponding to the emitter current of the IGBT 2 to flow through the sense resistor Rs in the control circuit 3.
  • the current detection power transistor 4 corresponds to a current sense terminal provided in the IGBT 2 and outputs a minute current of, for example, about 1/6000 to 1/10000 of the emitter current of the IGBT 2 as an emitter current.
  • the IGBT 2 drives the ignition coil 50, and a high voltage current generated by the ignition coil is sent to the spark plug 52.
  • the IGBT 2 is a vertical element.
  • the control circuit 3 includes a drive circuit 32 that forms a gate signal of the IGBT 2, a current limiting circuit 33 that limits the current of the IGBT 2, and a power supply circuit 35 that supplies power to the drive circuit 32 and the current limiting circuit 33.
  • the drive circuit 32 includes a timing control circuit 34 that supplies a gate signal Sg obtained by converting an on / off signal, which is an ignition signal input from the outside, into a gate voltage to the gate of the IGBT 2.
  • the current limiting circuit 33 is a sense resistor Rs in which a minute current, for example, about 1/6000 to 1/10000 of the emitter current of the IGBT 2 flowing through the current detection power transistor 4 is connected between the emitter of the current detection power transistor 4 and the ground. The current is detected as the collector-emitter current of the IGBT 2 and the collector-emitter current of the IGBT 2 is controlled at a constant current.
  • the current limiting circuit 33 includes a comparison circuit 33a composed of an operational amplifier to which the gate signal Sg output from the timing control circuit 34 of the drive circuit 32 is supplied to the non-inverting input side, and a minute current detected by the sense resistor Rs.
  • An operational amplifier 33b is provided that amplifies and supplies the detection voltage Vd to the inverting input side of the comparison circuit 33a. Therefore, the gate signal output from the comparison circuit 33a is at a high level when the voltage of the gate signal Sg is greater than the detection voltage Vd, and is at a low level when the detection voltage Vd is greater than the voltage of the gate signal Sg.
  • the power supply circuit 35 steps down the power supply voltage Vb of, for example, 14V input from the generator at the time of engine startup to 5V required by the current limiting circuit 33 and the timing control circuit 34 in the control circuit 3 and is constant. A necessary voltage is generated, and the formed necessary voltage is supplied to each circuit as a power source.
  • the power supply circuit 35 includes a primary step-down circuit 35a and regulators 35c and 35d. The stabilized necessary voltages V5P and V5S output from the regulators 35c and 35d are supplied as power to the drive circuit 32 and the current limiting circuit 33.
  • the primary step-down circuit 35a has a constant voltage circuit configuration in which a resistor 44 and a Zener diode 45 as shown in FIG. 2 are connected in series, and a step-down voltage is output from a connection point between the resistor 44 and the Zener diode 45. can do.
  • the Zener voltage of the Zener diode 45 is a voltage sufficient for the subsequent regulator to operate, for example, 8V.
  • the primary step-down circuit 35a has a resistor 43 connected to the source of an N-channel MOS field effect transistor 42 as a semiconductor switching element as shown in FIG. 3, and a bias circuit 41 for applying a constant voltage to the gate of the MOSFET 42.
  • the circuit configuration may be such that the step-down voltage is output from between the drain of the MOSFET and the resistor 43.
  • a constant voltage circuit shown in FIG. 2 can be used for the bias circuit 41.
  • the primary step-down circuit 35a has the above-described configuration, the NMOS field effect transistor constituting the primary step-down circuit 35a can be formed of a high breakdown voltage element having an offset drain structure.
  • the operation as the internal combustion engine ignition device performs the same operation as a normal internal combustion engine ignition device, a detailed description is omitted here, but the on / off signal that is the ignition signal input to the drive circuit 32 is in the on state.
  • the drive circuit 32 supplies the high-level gate signal Sg to the gate of the IGBT 2, whereby the primary coil 51 of the ignition coil 50 connected to the collector of the IGBT 2 is energized and a primary current flows. Thereafter, when the ignition signal is turned off, the IGBT 2 is turned off, the primary current of the primary coil 51 of the ignition coil 50 is cut off, a high voltage is generated in the ignition coil, and a spark is blown to the spark plug 52.
  • the emitter current of the IGBT 2 increases, and the sense voltage corresponding to the emitter current detected by the sense resistor Rs is amplified by the operational amplifier 33b of the current limiting circuit 33 and the detection voltage Vd exceeds the voltage of the gate signal Sg.
  • the gate signal output from the comparison circuit 33a becomes a low level and the IGBT 2 is turned off to prevent an overcurrent state.
  • a power supply voltage Vb of 12V is supplied from a battery (not shown) before the engine is started, and a power supply voltage Vb of 14V is supplied from the generator when the engine is started.
  • This power supply voltage Vb is supplied to the power supply circuit 35 of the control circuit 3.
  • the power supply voltage Vb is supplied to the primary step-down circuit 35a.
  • the drop voltage is controlled to a substantially constant voltage regardless of the fluctuation of the power supply voltage Vb.
  • the fluctuation of the power supply voltage Vb at this time may decrease from 14V to about 8V with respect to the reference voltage of 14V when the engine is started.
  • the influence of the fluctuation of the power supply voltage Vb may be removed by the primary step-down circuit 35a. it can.
  • the necessary voltage output from the primary step-down circuit 35a is individually supplied to the regulators 35c and 35d.
  • the regulators 35 c and 35 d supply a power supply having a high accuracy voltage to the timing control circuit 34 and the current limiting circuit 33 of the drive circuit 32. Therefore, the timing control circuit 34 and the current limiting circuit 33 can be accurately operated without being affected by the voltage fluctuation of the power supply voltage Vb.
  • a high voltage of, for example, 130 V is instantaneously supplied to the battery terminal B to input a surge voltage waveform. is there.
  • the MOS field effect transistor 42 is composed of a high breakdown voltage element having an offset drain structure, so that the MOS field effect transistor 42 is not damaged. Can work reliably.
  • the high voltage at the time of load dump is absorbed by the primary step-down circuit 35a, and the regulators 35c and 35d, the timing control circuit 34, the current limiting circuit 33 and the like after the primary step-down circuit 35a influence the influence of high voltage fluctuations. Not receive.
  • the primary step-down circuit 35a is a circuit having a relatively simple configuration, which contributes to downsizing and cost reduction of the entire circuit.
  • the power supply circuit 35 is composed of one primary step-down circuit 35a and two regulators 35c and 35d.
  • the present invention is not limited to this, and as shown in FIG. 4, the power supply circuit 35 is composed of one primary step-down circuit 35a and one regulator 35c, and the stabilization output from the regulator 35c.
  • the necessary voltage V5S may be supplied to the timing control circuit 34 and the current limiting circuit 33. In this case, since only one regulator 35c is required, the chip area can be reduced and the size can be reduced, and the cost can be reduced.
  • the necessary voltage V5S output from one set of regulators 35c is supplied to the drive circuit 32, and the other set is set.
  • the necessary voltage V5S output from the regulator 35c may be supplied to the current limiting circuit 33.
  • the timing control circuit 34 and the current limiting circuit 33 are supplied with power by separate power supply systems, the timing control circuit 34 can be driven without being affected by noise of the current flowing through the current limiting circuit 33. More accurate power supply can be formed.
  • the present invention is not limited to this, and FIGS. 6 to 6 corresponding to FIGS.
  • the current flowing through the IGBT 2 may be detected using a shunt resistor Rs and supplied to the current limiting circuit 33.
  • the comparison circuit 33a is used as the current limiting circuit 33.
  • the semiconductor switching is performed by omitting the comparison circuit 33a and allowing the gate signal Sg output from the timing control circuit 34 to escape to the ground.
  • An element may be provided, and this semiconductor switching element may be driven by the output of the operational amplifier 33b.
  • an internal combustion engine ignition device capable of accurately stabilizing a required voltage by using a primary step-down circuit and a regulator when the power supply voltage is stepped down to the necessary voltage of the circuit.

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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)

Abstract

La présente invention se rapporte à un dispositif d'allumage destiné à un moteur à combustion interne, qui peut correctement stabiliser une tension requise pour un circuit lorsqu'une tension d'alimentation est abaissée à la tension requise. Un circuit de commande (3), qui commande une borne de commande d'un élément de commutation à semi-conducteurs connecté au côté primaire d'une bobine d'allumage sur la base d'un signal d'allumage sorti d'une unité de production de signal d'allumage pour produire un signal d'allumage, est au moins pourvu d'un circuit de commande de temporisation (34) destiné à acheminer un signal d'entraînement à la borne de commande de l'élément de commutation à semi-conducteurs, d'un circuit de limitation de courant (33) destiné à détecter le courant s'écoulant dans l'élément de commutation à semi-conducteurs et à limiter le courant s'écoulant jusqu'à l'élément de commutation à semi-conducteurs, et d'un circuit de puissance (35) destiné à fournir une source d'alimentation au circuit de commande de temporisation et au circuit de limitation de courant. Le circuit de puissance (35) est pourvu d'au moins un circuit d'abaissement primaire (35a) destiné à abaisser la tension d'alimentation à la tension requise pour le circuit d'entraînement et le circuit de limitation de courant, et d'au moins un régulateur (35c) destiné à stabiliser la tension requise qui a été abaissée par le circuit d'abaissement primaire.
PCT/JP2012/005795 2011-09-16 2012-09-12 Dispositif d'allumage pour moteur à combustion interne WO2013038665A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013533502A JP5686197B2 (ja) 2011-09-16 2012-09-12 内燃機関用点火装置

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JP2011-203805 2011-09-16
JP2011203805 2011-09-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015119521A (ja) * 2013-12-17 2015-06-25 サンケン電気株式会社 半導体装置及びスイッチング回路
EP3070324A1 (fr) * 2015-03-20 2016-09-21 Fuji Electric Co., Ltd. Dispositif semi-conducteur d'allumeur, système d'allumage et unité de bobine d'allumage
US9847711B2 (en) 2015-03-13 2017-12-19 Fuji Electric Co., Ltd. Switching power supply device control circuit and switching power supply device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5620068U (fr) * 1979-07-24 1981-02-21
JPS6197974A (ja) * 1984-10-19 1986-05-16 Matsushita Electronics Corp 半導体装置の製造方法
JPS61105736U (fr) * 1984-12-17 1986-07-04
JPH0427170U (fr) * 1990-06-29 1992-03-04
JPH0735012A (ja) * 1993-07-23 1995-02-03 Nippon Carbureter Co Ltd エンジンの点火回路
JPH11201013A (ja) * 1998-01-06 1999-07-27 Hitachi Ltd 内燃機関用点火装置
JP2008086165A (ja) * 2006-09-28 2008-04-10 Toshiba Corp 電源装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001178146A (ja) * 1999-12-17 2001-06-29 Keihin Corp 携帯用発電機
JP4345845B2 (ja) * 2007-05-16 2009-10-14 株式会社デンソー 電源装置
JP5236608B2 (ja) * 2009-09-25 2013-07-17 富士通テン株式会社 アイドリングストップ装置およびアイドリングストップ機能の無効化方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5620068U (fr) * 1979-07-24 1981-02-21
JPS6197974A (ja) * 1984-10-19 1986-05-16 Matsushita Electronics Corp 半導体装置の製造方法
JPS61105736U (fr) * 1984-12-17 1986-07-04
JPH0427170U (fr) * 1990-06-29 1992-03-04
JPH0735012A (ja) * 1993-07-23 1995-02-03 Nippon Carbureter Co Ltd エンジンの点火回路
JPH11201013A (ja) * 1998-01-06 1999-07-27 Hitachi Ltd 内燃機関用点火装置
JP2008086165A (ja) * 2006-09-28 2008-04-10 Toshiba Corp 電源装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015119521A (ja) * 2013-12-17 2015-06-25 サンケン電気株式会社 半導体装置及びスイッチング回路
US9847711B2 (en) 2015-03-13 2017-12-19 Fuji Electric Co., Ltd. Switching power supply device control circuit and switching power supply device
EP3070324A1 (fr) * 2015-03-20 2016-09-21 Fuji Electric Co., Ltd. Dispositif semi-conducteur d'allumeur, système d'allumage et unité de bobine d'allumage
CN105991118A (zh) * 2015-03-20 2016-10-05 富士电机株式会社 点火器用半导体装置、点火器系统及点火线圈单元
JP2016176401A (ja) * 2015-03-20 2016-10-06 富士電機株式会社 イグナイタ用半導体装置、イグナイタシステム及び点火コイルユニット
US9771916B2 (en) 2015-03-20 2017-09-26 Fuji Electric Co., Ltd. Igniter semiconductor device, igniter system, and ignition coil unit
CN105991118B (zh) * 2015-03-20 2020-09-25 富士电机株式会社 点火器用半导体装置、点火器系统及点火线圈单元

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JP5686197B2 (ja) 2015-03-18

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