| 摘要 |
A high-energy ignition system for an internal combustion engine in which both magnetic and electrical energy stored in an energy storage coil (3) and in a capacitor (13) are supplied to the primary winding (10a) of an ignition coil (10) at a predetermined timing. When a first or second switching device (6, 11) is turned off, the capacitor (13) is charged with the energy stored in advance in the energy storage coil (3), and upon subsequent turning on of the first switching device (6), energy is stored in the energy storage coil (3) from a DC power supply. At substantially the same time as the turning off of the first switching device (6) at an ignition timing, the second switching device (11) is turned on to supply the primary winding (10a) with the energy stored in the energy storage coil (3) and the capacitor (13). Alternatively, the capacitor (13) is charged with the energy stored in advance in the energy storage coil (3) through the primary winding (10a) of the ignition coil (10) and a charging diode (12) at the time of turning off of the second switching device (11). The first and second switching devices (6, 11) operate similarly to supply the primary winding (10a) through a discharging diode (9, 14) with the energy stored in the energy storage coil (3) and the capacitor (13). |
