Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Reexamination Certificate
2005-07-19
2005-07-19
Sircus, Brian (Department: 2836)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
C361S139000
Reexamination Certificate
active
06920029
ABSTRACT:
A control method for an electromagnetic actuator for the control of a valve of an engine from an abutment condition, in which an actuator body actuating the valve and disposed to move between two electromagnets is maintained in abutment against a first excited electromagnet and against the action of at least one elastic body; in order to bring the actuator body into abutment against a second electromagnet, the first electromagnet is de-excited and the second electromagnet is then excited by means of excitation parameters, which are determined as a function of the measurement of the mean value of the disturbance force acting on the valve during the stage of de-excitation of the first electromagnet.
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Baker & Daniels
Magneti Marelli Powertrain S.p.A.
Nguyen Danny
Sircus Brian
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