Ignition apparatus for an internal combustion engine

Details Ignition apparatus for an internal combustion engine Ignition apparatus for an internal combustion engine

2006-02-14

2006-02-14

Kwon, John T. (Department: 3747)

Internal-combustion engines

High tension ignition system

Having dwell control

C123S644000

Reexamination Certificate

active

06997171

ABSTRACT:
An ignition apparatus for an internal combustion engine is capable of avoiding mis-ignition even if subject to external disturbances when a fail signal is transmitted through a common signal line on which an ignition signal can also be transmitted. An igniter is connected to receive the ignition signal from an ECU, and includes a waveform shaper connected with the signal line and having an input connected in parallel to an input resistance so as to make a voltage at the input higher than a prescribed voltage when the ignition signal flows into the input resistance, and a pulse output circuit connected to the input and having an output for generating the fail signal into which a secondary coil current is converted. The pulse output circuit adjusts a fail signal current such that the voltage at the input when the fail signal flows into the input resistance becomes less than the prescribed voltage.

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patent: 8-128381 (1996-05-01), None

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