Motors: expansible chamber type – Cyclically operable – Electrically or magnetically actuated or adjusted distributor
Patent
1979-04-05
1981-06-16
Maslousky, Paul E.
Motors: expansible chamber type
Cyclically operable
Electrically or magnetically actuated or adjusted distributor
91392, F01L 2508
Patent
active
042730287
ABSTRACT:
A valve for controlling the admission of gas to a cylinder of a piston-type machine, or for the discharge of gas therefrom, comprises a magnetic armature shiftable between a pair of magnetic poles formed to receive the armature with minimal radial play and with a predetermined air gap from the attracting pole in the energized condition of the coil. The energizing circuit includes an inductive proximity switch which is triggered without engagement by a metal formation on the crankshaft and applies its signal to a pulse former generating a steep-flank pulse triggering a timer to produce two rectangular voltage pulses of different durations. These pulses are applied to a gating circuit which produces a stepped signal with a high initial amplitude which is amplified and applied to a power converter energizing the coil with a corresponding current waveform. A monitoring circuit responds to deenergizing the coil to drain residual magnetism from the pole piece to enable a spring to rapidly close the valve.
REFERENCES:
patent: 1617516 (1927-02-01), Farquhar
patent: 2604079 (1952-07-01), Ray
patent: 3090362 (1963-05-01), Rolls
Asztalos Stefan
Rosenmeier Rudolf
Turnwald Ernst
Linde Aktiengesellschaft
Maslousky Paul E.
Ross Karl F.
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