Spark monitor and kill circuit

Details Spark monitor and kill circuit Spark monitor and kill circuit

2005-02-01

2005-02-01

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Internal-combustion engine ignition system or device

In situ testing of spark plug

C324S397000, C324S399000, C324S402000, C123S406130, C123S1980DC

Reexamination Certificate

active

06850071

ABSTRACT:
The method and apparatus of the present invention are useful for the monitoring of the electrical signals within an internal combustion spark plug circuit and the killing of a spark plug within that circuit. The invention essentially consists of connecting a transformer to the high voltage side of the spark plug circuit. Through the use of impedance and inductance, the present invention can either produce a low voltage replica of the waveform of the high voltage electrical signal which is directed to a spark plug or can effectively prohibit that spark plug from firing by short circuiting the low voltage side of the transformer of the device.

REFERENCES:
patent: 5224015 (1993-06-01), Balland
patent: 5301644 (1994-04-01), Olmr
patent: 5933009 (1999-08-01), Kayser
patent: 6222368 (2001-04-01), Inagaki et al.
patent: 6348797 (2002-02-01), Shimizu et al.
patent: 6426626 (2002-07-01), Kravis

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