Abstract:
An ignition control apparatus for engines is provided. The ignition control apparatus is designed to control a switch to release energy stored in a capacitor during spark discharge, thereby supplying a primary current to an other end side opposite a one end of a primary winding of an ignition coil connected to a dc power supply. This provides the ignition control apparatus which is capable of minimizing an increase in size or manufacturing cost and stabilizing the state of combustion of an air-fuel mixture.
Abstract:
An ignition circuit is provided and may include a dc-dc converter having a positive terminal and a negative terminal, an igniter plug having a first terminal and a second terminal, a first capacitor coupled to the positive terminal, a first diode coupled between the first capacitor and the negative terminal, a switching circuit coupled between the positive terminal, and the negative terminal, a second capacitor, a transformer having a primary and a secondary winding, the primary winding coupled between the negative terminal and the second capacitor and the secondary winding coupled between the negative terminal and the first terminal of igniter plug, and a second diode coupled between the first capacitor and the second terminal, wherein the second capacitor is coupled between the primary winding and the second diode, and wherein the first terminal is coupled to the secondary winding and the second terminal is connected to a ground.
Abstract:
A method and systems for an engine igniter excitation system includes an energy storage device, a first adaptive comparator configured to control the storage of an amount of energy in the energy storage device wherein the amount of energy is determined using at least one of an environmental parameter of the engine and a process parameter of the engine. The system also includes a second adaptive comparator communicatively coupled to the energy storage device wherein the second adaptive comparator is configured to control a rate of energy delivery to the energy storage device using at least one of an environmental parameter of the engine and a process parameter of the engine. The system also includes an igniter configured to generate a spark based on the amount of stored energy and the rate of energy delivery.
Abstract:
In an electronic control apparatus, a microcomputer stops its operation when a power voltage supplied from a regulator starts to fall. When a low voltage detection circuit detects fall of the power voltage, the microcomputer is reset immediately and a communication start detection circuit is permitted to output a communication start signal. It is also possible to maintain the microcomputer in a wait state until proceeding to a sleep mode, and proceed to a normal operation mode when a power-on start signal is changed to be active in a period of the wait state.
Abstract:
A battery, an energy charge inductance, and a first transistor are connected in series in an ignition system. A primary winding and a second switching device are connected in series between the ground and a point between the energy charge inductance and the first switching device. A drive circuit switches periodically on and off the first switching device and the second switching device during multispark duration of the spark plug such that each switching device has a different switching status from each other. After the multispark duration, the drive circuit switches periodically on and off the second transistor with a short switching interval. The switching interval is set such that a relatively low voltage that almost causes a spark is impressed to the spark plug. An ion current detection is implemented by using this voltage as a power source.
Abstract:
An ignition system for two ignition current circuits including a condenser to supply the ignition current to the plug. The ignition current circuits provide the ignition current to the plug alternately in response to an ignition timing signal so that the first and second current circuit to supply the ignition current constantly.
Abstract:
A high power high energy hybrid capacitive/inductive ignition system with stress-balanced coils Ti for internal combustion engines employing a dual discharge circuit comprising energy storage capacitor means (4, 4a) shunted by diode means (9, 9a), resonating inductor means (3, 15) and high leakage inductor means (3a) of coils Ti, one or more coils Ti with unidirectional switches Si for each coil Ti with shunt switch/diode means SDi shunting at least the primary windings of the coils Ti, so that, following production of an inital quarter cycle capacitive spark in the ampere range according to the transient voltage doubling formulation, there is a decaying inductive unidirectional spark of about one millisecond or greater time duration, the system powered and controlled by a power converter (10) and controller (11) and designed to employ coils Ti with small size magnetic E-cores with side-by-side windings to satisfy certain disclosed stress balance criteria.
Abstract:
Es werden ein Hochsetzsteller sowie ein Zündsystem mit einem Hochsetzsteller vorgeschlagen, welche eine bessere automatisierte Herstellung und reduzierte elektrische Isolationsmaßnahmen durch einen wie folgt aufgebauten Hochsetzsteller ermöglichen: - einen Transformator (3) mit einer Primärspule (31) und einer galvanisch von dieser getrennten Sekundärspule (32), wobei - die Sekundärspule (32) mehrlagig gewickelt ist und - die Primärspule (31) koaxial zur Sekundärspule (32) über eine äußerste Lage der Sekundärspule (32) gewickelt ist, wobei - ein erster elektrischer Anschluss (32a) der Sekundärspule (32) von einer innersten Lage der Sekundärspule (32) abzweigt, dadurch gekennzeichnet, dass - der erste elektrische Anschluss (32a) der Sekundärspule (32) zur elektrischen Verbindung mit einem Hochspannungsanschluss für die Funkenstrecke eingerichtet ist.