Electromagnetically-actuated positioning mechanisms

Details Electromagnetically-actuated positioning mechanisms Electromagnetically-actuated positioning mechanisms

1986-04-11

1987-12-29

Argenbright, Tony M.

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

2511291, 25112916, 25112918, 335266, F01L 904, H01F 708

Patent

active

047153318

ABSTRACT:
A solenoid insulation system for an electromagnetic positioning mechanism for reciprocating valve actuators which are shifted between two positions by means of actuating solenoids and are maintained under load between their operating positions by a spring system. In the operational state, the locus of equilibrium of the spring system is determined by an adjusting solenoid which may be integral with or closely adjacent to the actuating solenoid(s). Pursuant to the invention, the adjusting solenoid's magnetic field is decoupled to the greatest possible degree from that of the actuating solenoids. In this manner, uncontrolled operating states of the actuating solenoid are avoided. Decoupling insulation is provided by suitable air gap(s), diamagnetic or paramagnetic material, or constructing the core of the adjusting solenoid from material different than the actuating solenoid, e.g., transformer sheet and sintered ferrite core material respectively.

REFERENCES:
patent: 2989666 (1961-06-01), Brenner et al.
patent: 4455543 (1984-06-01), Pischinger et al.

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