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| Number | Title | Issue Date |
| 7159583 | Technique for drive current stabilization of an automotive ignition system Drive current stabilization is achieved through the management of a drive current. The drive current may include a control current that is provided to a control terminal of a switch, a current limit input current that is provided to a current limit circuit associate... | 01/09/2007 |
| 6935323 | Low current extended duration spark ignition system A system for firing a spark plug is disclosed. The system includes a timing controller configured to send a first timing signal and a second timing signal. The system also includes an ignition transformer having a primary winding and a secondary winding and a spark-... | 08/30/2005 |
| 5301649 | Ignition device for internal combustion engines An ignition device for internal combustion engines includes an ignition coil with separate primary and secondary windings. A sensor is connected in a spark plug current circuit. A peak value of an ignition current for each ignition is stored in a peak val... | 04/12/1994 |
| 4829973 | Constant spark energy, inductive discharge ignition system A constant energy ignition system is disclosed. A first programmable one shot multivibrator controls the dwell of an energy storage device and the firing time to produce an ignition pulse from the stored energy. A second programmable one shot multivibrato... | 05/16/1989 |
| 4799471 | Electronic system for controlling the ignition of an internal combustion engine, particularly for motor vehicles A control circuit which includes a circuit for regulating the time taken to desaturate the switching transistor. This regulating circuit is arranged to control the time for which the transistor is conductive, so that the desaturation time of the transisto... | 01/24/1989 |
| 4762110 | Ignition control device for internal combustion engine The present invention utilizes, selectively, a first signal formed in a first section of an ignition period composed of the first section and a second section with a predetermined ratio or a second signal formed in the second section according to a ratio ... | 08/09/1988 |
| 4750467 | Internal combustion engine ignition system An ignition system for a distributorless internal combustion engine ignition system. Parameters related to the energization of a given ignition coil are stored and later utilized to control the dwell time for this same ignition coil. Another coil is energ... | 06/14/1988 |
| 4649881 | Precision distributorless ignition control system for internal combustion engines An electronic ignition system is disclosed for controlling as a function of a selected engine parameter the ignition instants of an internal combustion engine having at least one cylinder, a piston, a spark plug for effecting combustion in the cylinder an... | 03/17/1987 |
| 4625704 | Electronic ignition system An electronic ignition system for a reciprocal piston, spark ignition internal combustion engine includes sensors which generate output signals representative of the rotational position and speed of the engine output shaft. A computer responsive to the se... | 12/02/1986 |
| 4434779 | Circuit for controlling the primary dwell time of ignition transformer A circuit arrangement for controlling the duration of a current generated in the primary winding of an ignition transformer comprises a ramp generator responsive to the ignition timing or an internal combustion engine for generating a ramp voltage having ... | 03/06/1984 |
| 4411246 | Ignition system and method for internal combustion engine An ignition system for the internal combustion engine is provided wherein a retard start timing and a conduction start timing are provided on the basis of an electrical signal produced from a pick-up coil. An ignition timing is provided at a time point fo... | 10/25/1983 |
| 4393852 | Linkage mechanism for supercharger system Disclosed is an induction or supercharger system (16) for a piston engine (10) having a Roots type blower (14) for supercharging an air-fuel mixture from a carburetor (12) having primary and secondary throttle valves (64) and (66). The induction system de... | 07/19/1983 |
| 4356808 | Low-speed compensated ignition system for an internal combustion engine A switching transistor (7, 9) is serially connected with the primary (5) of an ignition coil; current flow therethrough is controlled from an a-c signal generator (16) with respect to an ON threshold level (Ue) to store electromagnetic energy, and an OFF ... | 11/02/1982 |
| 4351287 | Process of controlling the current flowing period of an ignition coil A system for controlling the primary current of an ignition coil using a constant current signal having a calculation device to produce a signal for controlling the ON period of the primary current of the ignition coil, wherein a correction calculation de... | 09/28/1982 |
| 4309973 | Electronically controlled ignition device for combustion engine In an electronically controlled ignition device for a combustion engine, firstly an ignition timing and an energized angle of an ignition coil are calculated with response to running condition of the engine, secondly a non-energized angle of the ignition ... | 01/12/1982 |
| 4253443 | Internal combustion engine ignition system To permit use of shaft position transducers which provide needle pulses at predetermined angular positions of the crankshaft of an engine, such as Wiegand-type, and still enable generation of a counted dwell time even under transient conditions, or under ... | 03/03/1981 |
| 4245600 | Contactless ignition system for internal combustion engine A contactless ignition system of current interruption type for an internal combustion engine comprising at least one pulser device sensing a predetermined maximum advance position and a predetermined minimum advance position of the ignition timing to gene... | 01/20/1981 |
| 4212280 | Ignition system for internal combustion engines The ignition coil of the system has its primary serially connected with a transistor which controls current flow therethrough. Ignition pulses are provided by an ignition pulse source, for example an inductive transducer. The recurrence rate of the igniti... | 07/15/1980 |
| 4128091 | Hall effect electronic ignition controller with programmed dwell and automatic shut-down timer circuits An electronic ignition controller operable from a Hall Effect pickup Device in a ballast-resistorless, inductive-type ignition system for an automotive vehicle internal combustion engine and featuring programmed dwell and automatic shut-down timer circuit... | 12/05/1978 |
| 4082075 | Input quarter cycle timing circuit A timing circuit suitable for providing an output signal which occurs at the initiation of a negative going input signal and remains for a fixed percent duration of the period of the input signal. The timing circuit includes an input latch circuit for pre... | 04/04/1978 |
| 4041912 | Solid-state ignition system and method for linearly regulating and dwell time thereof An electronic, solid-state ignition system for an internal combustion engine is disclosed which is responsive to alternating timing signals produced in timed relationship with the engine cycling. The electronic system comprises a plurality of integrator c... | 08/16/1977 |
| 4019484 | Ignition apparatus for internal combustion engine An ignition apparatus for an internal combustion engine, wherein the energization time of the primary winding of the ignition coils is maintained constant regardless of the engine revolutions, is provided with reference time signal generator means within ... | 04/26/1977 |
| 4008698 | High energy adaptive ignition system An improved ignition system uses feedback techniques to maintain a constant high energy ignition spark level over the normal range of engine RPM. The feedback automatically compensates for environmental and aging effects such as increased ignition coil re... | 02/22/1977 |
| 3942896 | Measuring magnifier with special reticle A measuring device to determine whether the width of a printed bar falls within prescribed tolerances has a sleeve with a magnifying lens at one end and a reticle at the other end. The reticle is inscribed with indicia for providing an immediate visual in... | 03/09/1976 |
| 3938490 | Internal combustion engine ignition system for generating a constant ignition coil control signal An ignition system for use with an ignition coil and a source of alternating distributor pickup signals within an internal combustion engine. The system includes a zero crossing detector responsive to the distributor pickup signals and operative to genera... | 02/17/1976 |
| 3937193 | Electronic ignition system An electronic ignition system for a spark-ignition internal combustion engine. The ignition system is of the inductive type and includes an ignition coil having at least a primary winding and a switching device connected in series with it to control its c... | 02/10/1976 |
