Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2005-10-04
2005-10-04
Solis, Erick (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S630000, C073S035080
Reexamination Certificate
active
06951201
ABSTRACT:
In a first preferred embodiment, the present feature of the invention multiplexes both the ionization and driver current feedback signals into one signal, thus reducing cost and making coil packaging easier. The multiplexed signal first outputs the ionization detection signal and then replaces the ionization signal with the charge current feedback signal when the charge command Vinis enabled. In other words, the multiplexed feedback signal outputs the ionization feedback signal and switches to the charge current feedback signal when the charge command Vinis active. In a second preferred embodiment, the present feature of the invention comprises a method and apparatus to multiplex the ignition driver gate signal with both the ignition coil charge current feedback signal and the ionization signal, thus reducing the package pin count by two.
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Gould Kenneth L.
Huberts Garlan J.
Moran Kevin D.
Nation Michael T.
Wang Bruce
Dickinson Wright PLLC
Solis Erick
Visteon Global Technologies Inc.
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