GB987833A - Improvements in or relating to electronic ignition systems - Google Patents
Improvements in or relating to electronic ignition systemsInfo
- Publication number
- GB987833A GB987833A GB35114/63A GB3511463A GB987833A GB 987833 A GB987833 A GB 987833A GB 35114/63 A GB35114/63 A GB 35114/63A GB 3511463 A GB3511463 A GB 3511463A GB 987833 A GB987833 A GB 987833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- voltage
- transformer
- bias
- primary
- 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.)
- Expired
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
- F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
- F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
- F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
- F02P7/07—Hall-effect pick-up 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
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/155—Analogue data processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
987,833. Ignition systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 5, 1963 [Sept. 8, 1962] No. 35114/63. Heading FIB. An ignition system for an internal-combustion engine comprises a transistor, a source of power therefor, a transformer having primary and secondary windings, means connecting the primary winding of the transformer in the emitter-collector circuit of the transistor, means normally applying a bias voltage between the emitter and base electrodes of such a magnitude as to preclude the flow of current in the emittercollector circuit and means for suddenly reducing the bias voltage to switch the emittercollector circuit to a low impedance condition so as to apply substantially the full potential of the source of power to the primary winding to produce a high voltage pulse in the secondary winding of the transformer the means for suddenly reducing the bias voltage comprising a triggered pulse producing circuit controlled by an ignition timing mechanism and the timing mechanism comprising a bridge network incorporating in two arms thereof Hall effect semi-conductors the semi-conductors being adjacent each other and subjected sequentially to a moving magnetic field which alternatively unbalances the bridge in one direction and then the other to produce a voltage change initiating operation of the means for suddenly reducing the bias voltage. Transistor 11 produces oscillations which are rectified by the diodes 9, 10 to produce a voltage of for instance 50 volts across the capacitor 12. Transistor 20 is provided with an emitter voltage somewhat negative with respect to the positive terminal of the supply the actual voltage thereof being determined by the setting of the variable resistor 13 controlled by the accelerator pedal. The base electrode bias of the transistor 20 is initially determined by resistors 15, 36, 38 and Hall effect semi-conductors 33, 37 and is such that the transistor is normally cut off when no magnetic bias is applied to the semiconductor elements 33, 37 a rotating disc 34 is provided with permanent magnet members 35 which when the disc rotates each successively applies a moving field to the element 33 and then to the element 37 so that the base electrode voltage of the transistor 20 first is moved positive due to the increased resistance of the element 33 and then negative due to the subsequent increase of the resistance of the element 37 the resistance of element 33 having returned to normal. Although the schematic diagram shows elements 33, 37 as being spaced apart in practice they will be immediately adjacent to each other. The increase of the resistance of element 37 is designed to be sufficient to reduce the base bias of transistor 20 to the point where regenerative current conduction will take place due to the voltage feedback supplied by transformer 19. The regeneratively produced collector current which flows in the transistor 20 produces a voltage pulse in the transformer 25 which is supplied as a negative pulse to the base electrode of normally cut off power transistor 26 to suddenly render it heavily conducting. A stepped up voltage of for instance 200 volts appears between terminals 31, 32 and is applied to the primary of the ignition coil. The upper part of coil 30 may be the ignition coil primary itself. If desired a bi-stable transistorised multivibrator circuit or other suitable pulse producing source may replace the monostable oscillator comprising transistor 20. U.S.A. Specifications 2,898,392 and 2,966,615 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA857542 | 1962-09-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB987833A true GB987833A (en) | 1965-03-31 |
Family
ID=4141545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35114/63A Expired GB987833A (en) | 1962-09-08 | 1963-09-05 | Improvements in or relating to electronic ignition systems |
Country Status (3)
Country | Link |
---|---|
US (1) | US3241538A (en) |
DE (1) | DE1464011B2 (en) |
GB (1) | GB987833A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2393167A1 (en) * | 1977-05-31 | 1978-12-29 | Nagai Misao | IGNITION DEVICE FOR GASOLINE ENGINE |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3334619A (en) * | 1964-10-07 | 1967-08-08 | Texas Instruments Inc | Capacitive discharge ignition system and blocking oscillator power supply |
US3502955A (en) * | 1966-11-03 | 1970-03-24 | Brunswick Corp | Pulse forming circuit and capacitor discharge ignition systems therewith |
US3452731A (en) * | 1967-10-16 | 1969-07-01 | Mar Lin Safety Devices Inc | Ignition control circuit and power supply therefor |
CA919768A (en) * | 1971-03-12 | 1973-01-23 | R. Finch Stanley | Ignition timing system for an internal combustion engine |
US3861370A (en) * | 1973-03-30 | 1975-01-21 | Homer E Howard | Breakerless distributor and ignition system utilizing same |
US3906920A (en) * | 1974-04-25 | 1975-09-23 | Lux Inc | Ignition apparatus and system |
US4037577A (en) * | 1974-07-08 | 1977-07-26 | Gallo Michael R | Auto ignition system |
US4008701A (en) * | 1975-12-31 | 1977-02-22 | Essex International, Inc. | Magnetic circuit apparatus for an electronic ignition system of a combustion engine |
US4109630A (en) * | 1976-05-17 | 1978-08-29 | The Magnavox Company | Breakerless electronic ignition system |
US4155341A (en) * | 1977-03-28 | 1979-05-22 | Gulf & Western Manufacturing Company | Ignition system |
DE102012200633A1 (en) * | 2012-01-17 | 2013-07-18 | Man Diesel & Turbo Se | Capacitive ignition system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3139876A (en) * | 1960-08-16 | 1964-07-07 | Lucas Industries Ltd | Spark ignition apparatus for internal combustion engines |
-
1963
- 1963-07-15 US US295062A patent/US3241538A/en not_active Expired - Lifetime
- 1963-09-04 DE DE19631464011 patent/DE1464011B2/en not_active Withdrawn
- 1963-09-05 GB GB35114/63A patent/GB987833A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2393167A1 (en) * | 1977-05-31 | 1978-12-29 | Nagai Misao | IGNITION DEVICE FOR GASOLINE ENGINE |
Also Published As
Publication number | Publication date |
---|---|
DE1464011A1 (en) | 1969-06-26 |
US3241538A (en) | 1966-03-22 |
DE1464011B2 (en) | 1970-05-27 |
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