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AssigneeMagnavox Government and Industrial Electronics Company
InventorsWilliam E. Richeson, Jr., Frederick L. Erickson
Estimating the term…
A bistable electronically controlled pneumatically powered transducer for use, for example, as a valve mechanism in an internal combustion engine is disclosed. The transducer armature, an engine valve, for example, is powered by a pneumatic source and includes pneumatic damping and energy recovery as it nears its destination position. The armature is held in each of its extreme positions by a permanent magnet latching arrangement and is released therefrom to be pneumatically driven to the other extreme position by an electromagnetic arrangement which temporarily neutralizes the permanent magnetic field of the latching arrangement. A multiplicity of engine operating modes are also disclosed including operation of an engine in a six stroke cycle mode, and a unique intake valve timing scheme where the intake valve closure is delayed beyond bottom dead center of its associated cylinder with the delay being greater at lower engine speeds and less at higher engine speeds.
An electronically controllable pneumatically powered valve mechanism for use in an internal combustion engine comprising:
A bistable electronically controllable pneumatically powered valve mechanism for use in an internal combustion engine comprising:
A bistable electronically controlled pneumatically powered transducer having an armature reciprocable between first and second positions, motive means for causing the armature to move, a permanent magnet latching arrangement for holding the armature in either one of said positions, and an electromagnetic arrangement for temporarily neutralizing the effect of the permanent magnet latching arrangement to release the armature to move from one of said postions to the other of said positions.
A bistable electronically controlled pneumatically powered transducer having an armature reciprocable between first and second positions, a latching arrangement for maintaining the armature in either one of said positions, and an electromagnetic arrangement operable when energized to at least partially neutralize the latching arrangement and dislodge the armature from the position in which the armature was maintained.
A bistable electronically controlled pneumatically powered transducer having an armature reciprocable between first and second positions, motive means comprising a source of compressed air, a piston fixed to and movable with the armature, an air vent located about midway between the first and second positions for dumping air and removing the accelerating force from the piston as it approches one of the first and second positions, and for braking of and energy recovery from armature motion as the armature nears said one position.
An electronically controllable pneumatically powered valve mechanism for use in an internal combustion engine comprising:
Dependencies are inferred from the claim text.