Ignition system for internal combustion engines

Details Ignition system for internal combustion engines Ignition system for internal combustion engines

F - Mech Eng,Light,Heat,Weapons

02

P

F02P 3/08 (2006.01)

Patent

CA 2195793

An ignition system for an internal combustion engine is disclosed. The ignition system includes an ignition capacitor having one end terminal connected to an anode of a thyristor of which a cathode is connected to an ignition coil, and an opposite end terminal of the ignition capacitor is connected to ground. Further, the cathode of a diode is connected to the anode of the thyristor, and the anode of the diode is connected to the cathode of the thyristor. With this configuration, charge and discharge of the capacitor for ignition are repeated with repeated inversion in polarity of an electric charge accumulated in the ignition capacitor. As a result, a spark discharge can be repeatedly achieved across the ignition plug and it is therefore possible to achieve a stable AC arc in accordance with the DC-CDI method.

'invention vise un système d'allumage pour moteurs à combustion interne. Le système comprend un condensateur d'allumage ayant la borne d'une extrémité raccordée à l'anode d'un thyristor dont une cathode est raccordée à une bobine d'allumage, et la borne de l'extrémité opposée raccordée à la terre. De plus, la cathode d'une diode est raccordée à l'anode du thyristor, et l'anode de la diode est raccordée à la cathode du thyristor. Dans cette configuration, la charge et la décharge du condensateur se répètent avec inversion répétée de la polarité dans une charge électrique accumulée dans le condensateur d'allumage. En conséquence, il est possible d'obtenir une décharge par étincelle de manière répétée dans la bougie d'allumage et d'obtenir aussi un arc c.a. stable conformément à la méthode DC-CDI.

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