Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1992-11-19
1997-07-22
Kamen, Noah P.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9031, F01L 134
Patent
active
056495064
ABSTRACT:
One of the driving and driven parts of the coupling is connected to a cylinder (10) and the other to a piston (11) which delimit therebetween two antagonistic chambers (13, 14). The chambers have a substantially constant volume, are filled with a practically incompressible hydraulic liquid, and are interconnected through two unidirectional circuits (18, 19) which have opposite directions and each a substantially constant volume. A distributing device (22) is so arranged as to either bring into action one or the other of the unidirectional circuits, or to neutralize both of them.
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