Igniter system

Details Igniter system Igniter system

2011-08-30

2011-08-30

Kwon, John T (Department: 3747)

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

C123S623000, C123S630000, C123S14300R

Reexamination Certificate

active

08006678

ABSTRACT:
A coil failure detection circuit detects a rise of a collector current of an IGBT and a timer circuit measures the length of a rise period. If the rise is not a normal one, an electronic control unit judges that a coil failure has occurred. The electronic control unit turns off the IGBT to prevent misfires and stops a flow of fuel gas to a combustion chamber to prevent melting or deterioration of a catalyst.

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patent: 2011/0031979 (2011-02-01), Gillberg et al.
patent: 9-42129 (1997-02-01), None
patent: 2002-138935 (2002-05-01), None

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