車輛用 無接点式 点火裝置에 關한 硏究 = A Study on Ignition Devices without Break Point

다국어 초록 (Multilingual Abstract)

We choose the magnet detecting system of many that a ignition signal voltage can be induced in a pick-up coil by the rotation of timing rotor in distributor.
As the timing rotor rotates with cam gear, the magnetic flux alternating rate changes through timing rotor-magnet-bracket-pick up coil. At this time, a detecting transistor detects the ignition signal on the pick-up coil and makes it a switching signal. This switching signal is amplified by transistors and applied to the primary of ignition coil in transistor ignition system without break point.
In CDI ignition system without break point, the amplified switching signal is applied to the gate of SCR, a switching element. When a signal triggers the gate, a very high voltage appeared instantaneously in the secondary of ignition coil.
A transistor and a CDI ignition circuit without point are designed respectively in fig. 6 & fig. 12. As a result of practical test on road, the CDI ignition system without break point among them presented the best running characteristics as fig. 14.