JPS5584856A - Non-contact point-type ignition apparatus - Google Patents
Non-contact point-type ignition apparatusInfo
- Publication number
- JPS5584856A JPS5584856A JP15679678A JP15679678A JPS5584856A JP S5584856 A JPS5584856 A JP S5584856A JP 15679678 A JP15679678 A JP 15679678A JP 15679678 A JP15679678 A JP 15679678A JP S5584856 A JPS5584856 A JP S5584856A
- Authority
- JP
- Japan
- Prior art keywords
- output
- cut
- transistor
- potential
- terminal
- 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.)
- Pending
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
- 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
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
PURPOSE:To prevent an ignition timing lag resulting from an increase in rotational frequency for pickup coil SG whose output voltage slowly builds up, by varying the level by which an output transistor is turned on and off due to the output of pickup coil SG. CONSTITUTION:The potential of SG's terminal 1 is conducted to a base of transistor Q7 on the Schmit circuit (including Q7, Q6) through the intermediary of resistance R10, and further controls control transistor Q3 via Q6, Q5 and Q4. That is, if the output voltage of SG was increased in a normal direction and a potential of the terminal 1 reached a sufficient level for turning on Q7, Q3 is cut off, resulting in the turn-on of output transistors Q2, Q1. In the meantime, if the output of SG is reduced from a positive peak value, Q7 is cut off and Q3 is driven until it reaches a saturation state, while Q2 and Q1 are rapidly cut off. At this moment, high voltage is generated on the primary winding of ignition coil lg, causing a spark on ignition plug PLG through the secondary winding.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15679678A JPS5584856A (en) | 1978-12-21 | 1978-12-21 | Non-contact point-type ignition apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15679678A JPS5584856A (en) | 1978-12-21 | 1978-12-21 | Non-contact point-type ignition apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5584856A true JPS5584856A (en) | 1980-06-26 |
Family
ID=15635491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15679678A Pending JPS5584856A (en) | 1978-12-21 | 1978-12-21 | Non-contact point-type ignition apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5584856A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5257442A (en) * | 1975-11-05 | 1977-05-11 | Bosch Gmbh Robert | Ignition apparatus for internal combustion engine |
JPS5425336A (en) * | 1977-07-29 | 1979-02-26 | Hitachi Ltd | Contactless igniter |
JPS54158535A (en) * | 1978-06-02 | 1979-12-14 | Hitachi Ltd | Non-contact ignition device |
-
1978
- 1978-12-21 JP JP15679678A patent/JPS5584856A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5257442A (en) * | 1975-11-05 | 1977-05-11 | Bosch Gmbh Robert | Ignition apparatus for internal combustion engine |
JPS5425336A (en) * | 1977-07-29 | 1979-02-26 | Hitachi Ltd | Contactless igniter |
JPS54158535A (en) * | 1978-06-02 | 1979-12-14 | Hitachi Ltd | Non-contact ignition device |
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