Method for driving an electromagnetic actuator for operating a g

Details Method for driving an electromagnetic actuator for operating a g Method for driving an electromagnetic actuator for operating a g

1999-09-11

2000-11-28

Denion, Thomas

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

25112904, 2511291, 335220, F01L 904

Patent

active

061520942

ABSTRACT:
An electromagnetic actuator for the operation of a gas change valve has two electromagnets placed opposite to one another and an armature acting on the gas change valve that can be moved against the force of at least one valve spring. In an actuator of this kind, fluctuations of operational system parameters can lead to incorrect functioning and to increased wear of the actuator. With a new method for driving an actuator, the acceleration curve of the gas change valve is measured with an acceleration sensor and the energy supplied to the electromagnet capturing the armature is controlled according to the acceleration curve of the gas change valve. In this way, kinetic energy losses due to disturbances can be compensated so that the armature impacts the capturing electromagnet with a predetermined velocity.

REFERENCES:
patent: 4883025 (1989-11-01), Richeson, Jr.
patent: 5004079 (1991-04-01), Ivers et al.
patent: 5797360 (1998-08-01), Pischinger et al.
patent: 6076490 (2000-06-01), Esch et al.

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