Internal combustion engine ignition apparatus

Details Internal combustion engine ignition apparatus Internal combustion engine ignition apparatus

2006-03-07

2006-03-07

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

High tension ignition system

Having specific trigger circuitry

C123S652000, C123S651000, C123S644000

Reexamination Certificate

active

07007683

ABSTRACT:
An internal combustion engine ignition apparatus includes a switching circuit having no power supply terminal connected to a power supply such as a battery is constructed, and including an output terminal connected to an ignition coil, an input terminal for receiving an ignition signal voltage and a reference potential terminal connected to a reference potential. In the switching circuit, the terminal structure is simplified, and energization timing and ignition timing can be set more accurately. A current supply circuit is connected between the input terminal and the reference potential terminal, and a current is supplied from the current supply circuit to a drive resistor of the switching element. In this current supply circuit, an energization timing when supply of the driving current is started is controlled by a waveform shaping circuit operating by the ignition signal voltage, and an ignition timing when the driving current is interrupted is controlled.

REFERENCES:
patent: 4397290 (1983-08-01), Tanaka et al.
patent: 5070853 (1991-12-01), Koiwa
patent: 6336448 (2002-01-01), Furuhata et al.
patent: 6672295 (2004-01-01), Kohno et al.
patent: 6932065 (2005-08-01), Naruse et al.
patent: 9-280147 (1997-10-01), None
patent: 2749714 (1998-02-01), None

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