Ignition system of the condensor-discharge type for internal combustion engine
This patent describes an ignition system of the condensor-discharge type for an internal combustion engine, which consists of: an ignition coil having a primary winding and a secondary winding; an exciter coil arranged in a magneto which is adapted to be rotated in synchronism with the rotation of an internal combustion engine, the exciter coil being adapted to generate output voltages each comprising a first half wave voltage of negative polarity, a second half wave voltage of positive polarity and a third half wave voltage of negative polarity in sequence at predetermined angular intervals when the engine is rotated in the positive direction; an ignition energy accumulating condensor arranged on the primary winding side of the ignition coil to be charged to have one polarity by the second half wave voltage generated from the exciter coil; a discharge control thyristor provided to allow the ignition energy accumulating condensor to be discharged through the primary winding of the ignition coil when it is turned on; a turn-on signal supply circuit for supplying a turn-on signal to the thyristor by means of the half wave voltages of negative polarity at the ignition position of the engine; a signal control condensor connected to be charged to have one polarity by the second half wave voltage generated from the exciter coil; a signal control thyristor provided to substantially short-circuit the output of the exciter coil when it is turned on and adapted to allow the anode-cathode circuit to be biased in the forward direction by the first and third half wave voltages and a discharge circuit for permitting the signal control condensor to be discharged through the gate-cathode circuit of the signal control thyristor.
- Assignee:
- Kokysan Denki Co., Ltd., Shizuoka
- Patent Number(s):
- US 4566425
- OSTI ID:
- 5834815
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330100* -- Internal Combustion Engines
ANODES
CAPACITORS
CATHODES
DESIGN
ELECTRIC COILS
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTRODES
ELECTRONIC CIRCUITS
ENERGY-LEVEL TRANSITIONS
ENGINES
EQUIPMENT
EXCITATION
HEAT ENGINES
IGNITION SYSTEMS
INCIDENCE ANGLE
INTERNAL COMBUSTION ENGINES
MOTION
POLARIZATION
ROTATION
SEMICONDUCTOR DEVICES
SIGNALS
THYRISTORS