Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2004-12-09
2008-12-30
Kwon, John T (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S480000
Reexamination Certificate
active
07469679
ABSTRACT:
A method for detecting and controlling the position of a valve actuator is provided. The method includes applying a plurality of signals of different duration and/or magnitude to the valve actuator and measuring a signal from the valve actuator. This signal from the valve actuator is indicative of valve movement for each of the plurality of applied signals. The method further includes adjusting an injection signal to the valve actuator based at least from the measured signals from the valve actuator. This disclosure also applies this method to a solenoid actuator of a fuel injector.
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Puckett Daniel Reese
Schuh David John
Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner
Kwon John T
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