Linear EMV actuator using permanent magnet and electromagnet

Details Linear EMV actuator using permanent magnet and electromagnet Linear EMV actuator using permanent magnet and electromagnet

2007-08-14

2007-08-14

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

C123S090150, C251S129010, C251S129150

Reexamination Certificate

active

11302083

ABSTRACT:
A linear EMV actuator uses a permanent magnet and an electromagnet in which EMV operation for opening/closing an exhaust valve and an intake valve makes valve operations linear. As a result, the valve undergoes a soft landing and active control of an amount of opening of the valve. The linear EMV actuator includes an upper core and a lower core, an armature, an actuator spring and a valve spring. Also included are a permanent magnet, an upper coil and a lower coil connected to each other in series thereby forming one electromagnet, a displacement sensor, and a position controller.

REFERENCES:
patent: 6216653 (2001-04-01), Hara et al.
patent: 6634327 (2003-10-01), Yanai

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