IGNITION APPARATUS FOR INTERNAL COMBUSTION ENGINE

摘要

PURPOSE:To enable accurate ignition and subsequent acceleration of combustion to be made simultaneously by a method wherein a flame core is first formed by a spark ignition and then a plasma gas jet is applied on the surface of the flame while the flame grows larger. CONSTITUTION:A high voltage is generated from an ignition coil 4 through an ignition advance angle control circuit 5 and is distributed to ignition plugs 10 through a distributor 8 so that the ignition plug 10 is spark-ignited to fire a gas mixture. After a lapse of a delay time due to a delay circuit 22, a high voltage is generated through the operation of an ignition coil 20 and at the same time a switching element 24 of a plasma discharge circuit 2' is turned ON to thereby place the charge of a capacitor 14 in a dischargeable condition. Accordingly, the injection of the plasma jet is made at the ingnition plug 10 with a delay of several msec from the initial ignition.