Solenoid valve assembly
AssigneeThe Garrett Corporation
InventorJohn D. Mitchell
Life of this patent
Estimating the term…
Abstract
A solenoid valve assembly including a movable armature acting through a lost motion unit for moving a valve member to an open position. The lost motion unit stores armature stroke energy during an initial stage of armature stroke, and sums the stored energy with armature stroke energy during a latter stage of armature stroke to open the valve member.
Claims14
A solenoid valve assembly comprising armature means movable through a predetermined stroke distance, said assembly being of the type wherein the electromotive force output on said armature means is relatively small upon initiation of stroke movement thereof and increases with stroke length;
- an impact member;
- compression spring means reacting between said armature means and said impact member for normally maintaining said armature means spaced from said impact member a distance at least slightly less than the armature means stroke distance;
- and a valve member movable by said impact member, said spring means being for storing stroke energy through an initial portion of armature means stroke and for summing the stored energy with stroke energy throughout a latter portion of armature means stroke upon impact with said impact member to move said valve member, and accelerate said valve member to a speed substantially greater than the speed of movement of said armature means.
A solenoid valve assembly comprising armature means movable through a predetermined stroke distance, said assembly being of the type wherein the electromotive force output on said armature means is relatively small upon initiation of stroke movement thereof and increases with stroke length;
- a lost motion unit including a valve actuator movable by said armature means, an impact member, and compression spring means reacting between said actuator and impact member for normally maintaining said actuator and impact member spaced from each other a distance at least slightly less than the armature means stroke distance;
- and a valve member movable by said impact member, said spring means being for storing stroke energy through an initial portion of armature means stroke and for summing the stored energy with the stroke energy throughout a latter portion of armature means stroke upon impact of said impact means by said actuator to move said valve member, and accelerate said valve member to a speed substantially greater than the speed of movement of said armature means.
A solenoid valve assembly comprising an armature movable through a predetermined stroke distance, said assembly being of the type wherein the electromotive force output on said armature is relatively small upon initiation of stroke movement thereof and increases with stroke length;
- a first valve member movable by said armature;
- a lost motion unit including a valve actuator movable by said first valve member, an impact member, and compression spring means reacting between said actuator and impact member for normally maintaining said actuator and impact member spaced from each other a distance at least slightly less than the armature stroke distance;
- and a second valve member movable by said impact member, said spring means being for storing armature stroke energy through an initial portion of armature stroke and for summing the stored energy with stroke energy throughout a latter portion of armature stroke upon impact of said impact member to move said second valve member, and accelerate said second valve member to a speed substantially greater than the speed of movement of said armature.
Dependencies are inferred from the claim text.