US4359038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic ignition-coil control device for an internal combustion engine
Assignee: GROUPEMENT D'INTERET ECONOMIQUE DE RECHERCHES ET DE DEVELOPMENT PSA A CORP OF FRANCE
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Filing: 1980-09-18
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Granted: 1982-11-16
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Expires: 2000-09-18
Abstract
Abstract The primary winding of an ignition coil is placed in series with the collor of a switching transistor. In order to protect the transistor against overvoltages, the collector is also connected to a level comparator and the base receives a two-state control signal which is synchronous with the rotation of the engine. One input of the comparator is connected through a divider network to the collector of the transistor and the outer input is connected to a fixed direct-current voltage source. Provision is also made for an error amplifier connected to the output of the comparator, and for a summing circuit which is connected to the control input of the transistor and receives the control signal.
Inventors
- 👤 Andre Xiberas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:50
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/08; H03K17/082; H03K17/0826; F; F02; F02P; F02P3/00; F02P3/02; F02P3/04; F02P3/055; F02P3/0552
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
174 words
An ignition-coil device for an internal combustion engine having an ignition-coil with a primary and a secondary winding, a switching transistor in which a collector thereof is connected to the primary winding of the ignition-coil and a base of the transistor receives a two state control signal from an electronic transducer which signal is synchronous with the rotation of the engine to either turn-off or turn-on said transistor, said control device comprises in series-connected relation: a level comparator having a first input connected through a divider network to the collector of said switching transistor and having a second input connected to a fixed direct-current voltage source and providing an output in response to the voltage at the collector of said switching transistor; an error amplifier connected to the output of said level comparator; a summing circuit which receives the output of said error amplifier and said two-state control signal in order to protect said transistor from overvoltage occuring during operation by regulating the current which flows through the primary winding of said ignition coil.
Claim 2
Dependent Claim
174 words
An ignition-coil device for an internal combustion engine having an ignition-coil with a primary and a secondary winding, a switching transistor in which a collector thereof is connected to the primary winding of the ignition-coil and a base of the transistor receives a two state control signal from an electronic transducer which signal is synchronous with the rotation of the engine to either turn-off or turn-on said transistor, said control device comprises in series-connected relation: a level comparator having a first input connected through a divider network to the collector of said switching transistor and having a second input connected to a fixed direct-current voltage source and providing an output in response to the voltage at the collector of said switching transistor; an error amplifier connected to the output of said level comparator; a summing circuit which receives the output of said error amplifier and said two-state control signal in order to protect said transistor from overvoltage occuring during operation by regulating the current which flows through the primary winding of said ignition coil.
Claim 3
Dependent Claim
49 words
A control device according to claim 1, wherein the level comparator and the error amplifier are constituted by a differential amplifier having a first input connected through said divider network to the collector of the switching transistor and having a second input connected to said fixed direct-current voltage source.
Claim 4
Dependent Claim
16 words
A control device according to claim 1, wherein the divider network is of the resistive type.
Claim 5
Dependent Claim
18 words
A control device according to claim 1 , wherein a low-voltage Zener diode supplies said fixed direct-current voltage.
Claim 6
Dependent Claim
20 words
A device according to claim 1, wherein the elements constituting said device are fabricated in the form of an integrated-circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |