Internal combustion engine ignition apparatus

Details Internal combustion engine ignition apparatus Internal combustion engine ignition apparatus

2005-08-23

2005-08-23

Solis, Erick (Department: 3747)

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

C123S650000, C123S652000

Reexamination Certificate

active

06932065

ABSTRACT:
There is proposed an internal combustion engine ignition apparatus in which a switching circuit having no power supply terminal connected to a power supply such as a battery, and includes an output terminal connected to an ignition coil, an input terminal for receiving supply of an ignition signal voltage, and a reference potential terminal connected to a reference potential. 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. This current supply circuit is controlled by a constant current circuit, and supplies a driving current, which is made a constant current, to the drive resistor between a rising portion of the ignition signal voltage and a falling portion thereof. The driving current, which is made the constant current, keeps the gate voltage of the switching element being constant in the on period.

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patent: 6814066 (2004-11-01), Ando
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patent: 6848437 (2005-02-01), Naruse et al.
patent: 2001/0037801 (2001-11-01), Ito et al.
patent: 2749714 (1992-05-01), None
patent: 09-280147 (1997-10-01), None

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