[특허]Ignition device for an internal combustion engine

Mitsubishi Denki Kabushiki Kaisha

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Ignition device for an internal combustion engine

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02P-00300
미국특허분류(USC)	123/644; 123/651; 315/209.T
출원번호	US-0289200 (2002-11-07)
우선권정보	JP-0189398 (2002-06-28)
발명자 / 주소	Naruse, Yusuke Nobe, Hisanori
출원인 / 주소	Mitsubishi Denki Kabushiki Kaisha
대리인 / 주소	Sughrue Mion, PLLC
인용정보	피인용 횟수 : 3 인용 특허 : 3

초록

The ignition device for an internal combustion engine includes, a control unit (1) for outputting an ignition signal used to determine a time when an ignition plug (8) should be ignited, a switching unit (5) connected to the other terminal of a primary coil for cutting off the flow of a primary current, and a drive unit (4) for turning ON or OFF the switching unit (5) in response to the ignition signal to adjust a voltage to be applied to a gate of the switching unit (5).

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1. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:control means for outputting an ignition signal used to determine a time when an ignition plug should be ignited; switching means connected to the other terminal of a primary coil for cutting off the flow of a primary current; drive means for turning ON or OFF the switching means in response to the ignition signal to adjust a voltage to be applied to a gate of the switching means; and filter means, external to the drive means, for absorbing a surge generated in the voltage of said power source. 2. An ignition device for an internal combustion engine according to claim 1,wherein said ignition device further comprises a power source pull-up resistor connected between said power source and said drive means, said filter means comprises a capacitor, and said pull-up resistor and said capacitor constitute a filter. 3. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:control means for outputting an ignition signal used to determine a time when an ignition plug should be ignited; switching means connected to the other terminal of a primary coil for cutting off the flow of a primary current; and drive means for turning ON or OFF the switching means in response to the ignition signal to adjust a voltage to be applied to a gate of the switching means, wherein said drive means includes a push-pull circuit for connecting or disconnecting said power source and said switching means to each other or from each other in accordance with a level of an ignition signal from said ignition plug. 4. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:control means for outputting an ignition signal used to determine a time when an ignition plug should be ignited; switching means connected to the other terminal of a primary coil for cutting off the flow of a primary current; and drive means for turning ON or OFF the switching means in response to the ignition signal to adjust a voltage to be applied to a gate of the switching means, wherein said drive means includes current limiting means for limiting a quantity of current to adjust a current to be supplied to the gate of said switching means in accordance with the voltage of said power source, said current limiting means being provided in an after stage of a power source pull-up resistor which is connected between said power source and said drive means. 5. An ignition device for an internal combustion engine according to claim 4,wherein said current limiting means comprises a diode and a current limiting resistor connected in parallel, and said diode and said current limiting resistor are connected in the after stage of said power source pull-up resistor. 6. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:control means for outputting an ignition signal used to determine a time when said ignition plug must be ignited; switching means connected to the other end of said primary winding for cutting off the flow of a primary current; drive means for turning ON or OFF said switching means in response to the ignition signal; and high voltage cutting off means for detecting a voltage value of said power source to cut off the flow of the primary current when the voltage value has reached a predetermined voltage, said high voltage cutting off means including: cut-off delaying means for delaying the cut-off by a predetermined time, wherein after a lapse of a predetermined time after the voltage value had reached a predetermined voltage, the primary current is cut off. 7. An ignition device for an internal combustion engine according to claim 6, wherein said cut-off delaying means is configured together with said high voltage cutting-off means in a single integrated circuit.8. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:a control circuit which outputs an ignition signal used to determine a time when an ignition plug should be ignited; a switching circuit which is connected to the other terminal of a primary coil and cuts off the flow of a primary current; a driving circuit which turns ON or OFF the switching circuit in response to the ignition signal to adjust a voltage to be applied to a gate of the switching means; and a filter circuit, external to the driving circuit, for absorbing a surge generated in the voltage of said power source. 9. An ignition device for an internal combustion engine according to claim 8,wherein said ignition device further comprises a power source pull-up resistor connected between said power source and said driving circuit, said filter circuit comprises a capacitor, and said pull-up resistor and said capacitor constitute a filter. 10. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:a control circuit which outputs an ignition signal used to determine a time when an ignition plug should be ignited; a switching circuit which is connected to the other terminal of a primary coil and cuts off the flow of a primary current; and a driving circuit which turns ON or OFF the switching circuit in response to the ignition signal to adjust a voltage to be applied to a gate of the switching means; wherein said driving circuit includes a push-pull circuit which connects or disconnects said power source and said switching circuit to each other or from each other in accordance with a level of an ignition signal from said ignition plug. 11. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:a control circuit which outputs an ignition signal used to determine a time when an ignition plug should be ignited; a switching circuit which is connected to the other terminal of a primary coil and cuts off the flow of a primary current; and a driving circuit which turns ON or OFF the switching circuit in response to the ignition signal to adjust a voltage to be applied to a gate of the switching means, wherein said driving circuit includes a current limiting circuit which limits a quantity of current to adjust a current to be supplied to the gate of said switching circuit in accordance with the voltage of said power source, said current limiting circuit being provided in an after stage of a power source pull-up resistor which is connected between said power source and said driving circuit. 12. An ignition device for an internal combustion engine according to claim 11,wherein said current limiting circuit comprises a diode and a current limiting resistor connected in parallel, and said diode and said current limiting resistor are connected in the after stage of said power source pull-up resistor. 13. An ignition device for an internal combustion engine in which a power source is connected to one end of a primary winding of an ignition coil mounted to said internal combustion engine, an ignition plug is connected to one end of a secondary winding of said ignition coil and the current flow through said primary winding is cut off to supply a high voltage generated through said secondary winding to said ignition plug, said ignition device comprising:a control circuit which outputs an ignition signal used to determine a time when an ignition plug should be ignited; a switching circuit which is connected to the other terminal of a primary coil and cuts off the flow of a primary current; a driving circuit which turns ON or OFF the switching circuit in response to the ignition signal to adjust a voltage to be applied to a gate of the switching means; and a high voltage cutting-off circuit which detects a voltage value of said power source to cut off the flow of the primary current when the voltage value has reached a predetermined voltage, said high voltage cutting off circuit comprising: a delay circuit which delays the cut-off by a predetermined time, wherein after a lapse of a predetermined time after the voltage value had reached a predetermined voltage, the primary current is cut off. 14. An ignition device for an internal combustion engine according to claim 13, wherein said delaying circuit is configured together with said high voltage cutting-off circuit in a single integrated circuit.

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이 특허를 인용한 특허 피인용횟수: 3

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특허 상세정보

Ignition device for an internal combustion engine

초록

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특허 상세정보

Ignition device for an internal combustion engine

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이 특허에 인용된 특허 (3)

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