Patent ID: 8459218

Claim:
An adjustable-stroke solenoid valve assembly comprising: a valve body defining a supply port configured to introduce a fluid into the valve body, a control port and an exhaust port each configured to expel at least a portion of the fluid from the valve assembly, and an inner cavity having a first seat and a second seat, wherein the inner cavity is configured to fluidly connect the supply, control, and exhaust ports; a solenoid coil configured to be selectively energized and de-energized; and a plunger assembly arranged within the inner cavity and having: an armature configured to be shifted when the coil is energized; a stem having a first end and a second end, wherein the first end is engaged with the armature and is configured to be adjusted relative to the armature; a poppet engaged with the second end of the stem, wherein the poppet is configured to be adjusted on the stem; a first surface configured to be pressed against the first seat and block flow of the fluid from the supply port to the control port when the solenoid coil is de-energized; and a second surface configured to be pressed against the second seat to facilitate flow of the fluid from the supply port to the control port when the solenoid coil is energized; wherein the adjustment of the first end of the stem relative to the armature and of the poppet on the second end establish a predetermined stroke for the plunger assembly and a predetermined flow rate of the fluid to the control port.