Electromagnetic cylinder valve actuator having a valve lash adju

Details Electromagnetic cylinder valve actuator having a valve lash adju Electromagnetic cylinder valve actuator having a valve lash adju

1997-03-12

1998-06-09

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

F01L 904

Patent

active

057620350

ABSTRACT:
An internal-combustion engine includes a cylinder head; a cylinder valve supported for reciprocating motion in the cylinder head to assume open and closed positions; and an electromagnetic actuator for operating the cylinder valve. The electromagnetic actuator includes a housing; and a first and a second electromagnet received in the housing and secured thereto at a fixed distance from one another. The first electromagnet has a first pole face and the second electromagnet has a second pole face oriented toward the first pole face. The actuator further has an armature positioned between the first and second pole faces for a reciprocating motion therebetween; return springs arranged for exerting oppositely oriented forces on the armature, whereby the armature executes reciprocating motion against a spring force; a connecting arrangement for coupling the armature to the stem of the cylinder valve; and a setting unit for displacing the housing relative to the cylinder valve.

REFERENCES:
patent: 4256065 (1981-03-01), Hirt
patent: 4777915 (1988-10-01), Bonvallet
patent: 5131624 (1992-07-01), Kreuter et al.
patent: 5347961 (1994-09-01), Buehrle, II et al.
patent: 5548263 (1996-08-01), Bulgatz et al.
patent: 5611303 (1997-03-01), Izuo
patent: 5636601 (1997-06-01), Moriya et al.

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