| 摘要 |
The ignition system of a five-cylinder gasoline engine utilizes two ignition coils, each serving two cylinders which are fired at instants of the firing sequence which are separated by the firing of one of the cylinders served by the other of these ignition coils. A third ignition coil fires only the remaining cylinder. The sparkplugs of two cylinders fired by the same ignition coil are connected through oppositely poled diodes. This arrangement avoids circuit closing sparks when either of the twin primary windings of the ignition coils serving two cylinders is turned on. There are thus five separate primary windings and only three separate secondary windings, and the former are turned on and off by individual electronic switching circuits triggered in sequence by individual pulse generators responsive to a magnet on a single rotary disc. |
