Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2007-02-13
2007-02-13
Kwon, John T. (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S434000, C123S406110
Reexamination Certificate
active
11352069
ABSTRACT:
A system and method of operating a vehicle powertrain that employs active control to reduce NVH, particularly during idle. The method includes selectively operating the powertrain in at least a non-idle condition and an idle condition; receiving vibration signals from a sensor disposed on an internal combustion engine; controlling spark timing of the internal combustion engine based on vibration signals received from the sensor; and during the idle condition, modifying a speed and/or a load of the internal combustion engine based on vibration signals received from the sensor.
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Chol Michael
Makki Imad
Smith Stephen B.
Surnilla Gopichandra
Alleman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Kwon John T.
Lippa Allen J.
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