Ignition system for internal combustion engines

Patent · Tue Mar 31 04:00:00 EST 1987

OSTI ID:6610576

Ooyabu, S; Suzuki, K; Kondo, M; Nakamura, H

This patent describes an ignition system having an ignition coil with a secondary winding which operates one single spark plug that generates an ignition spark for an internal combustion engine in synchronism with rotation of the engine. The system further comprises: (a) switching means for opening and closing in synchronism with the rotation of the engine; (b) the ignition coil having a primary winding connected to the switching means and the secondary winding being connected only at a first, high voltage end thereof to the one spark plug. The secondary winding is connected to operate only a single spark plug, and a current unindirectionally flows to the primary winding to store an ignition energy therein in response to closing of the switching means and the current flowing to the primary winding is interrupted in response to opening of the switching means thereby inducing a high voltage in the secondary winding; and (c) reverse current blocking means connected to a low voltage, second end of the secondary winding, opposite to the first end to which the one spark plug is connected, for preventing a voltage induced in the secondary winding in response to closing of the switching means from being supplied to the spark plug.

• Assignee: Nippondenso Co., Ltd., Kariya
• Patent Number(s): US 4653460
• OSTI ID: 6610576
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
ELECTRIC COILS
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRIC SPARKS
ELECTRICAL EQUIPMENT
ELECTRODES
ENGINES
EQUIPMENT
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MOTION
ROTATION
SPARK IGNITION ENGINES
SWITCHES
SYNCHRONIZATION