Ignition device for an internal combustion engine

Details Ignition device for an internal combustion engine Ignition device for an internal combustion engine

1998-06-26

2000-07-04

Yuen, Henry C.

Internal-combustion engines

High tension ignition system

Safety device

123645, 123655, F02P 1500, H01F 3812

Patent

active

060823445

ABSTRACT:
To provide an ignition device advantageous in cost and space by using an inexpensive small-sized Zener diode having a Zener voltage lower than an induced voltage generated at a primary current supply timing, so as to prevent sparking of a spark plug due to the induced voltage. An ignition device for an internal combustion engine, includes a Zener diode provided on the secondary lower-voltage side of an ignition coil. The Zener diode comes into conduction at a voltage lower than an induced voltage generated at a primary current supply timing.

REFERENCES:
patent: 4361129 (1982-11-01), Sugie et al.
patent: 4463744 (1984-08-01), Tanaka et al.
patent: 4653460 (1987-03-01), Ooyabu et al.

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