Soft-landing plunger for use in a control valve
AssigneeDelphi Technologies, Inc.
InventorsYingjie Lin, Lorenzo Guadalupe Rodriguez
Life of this patent
Estimating the term…
Abstract
An evaporative control valve includes a plunger reciprocable between a valve stop and a valve seat to open and close a controlled port. The plunger has a body, a flexible support member mounted on one end of the body and a resilient tip positioned on the support member for sealing engagement with the valve seat. When the resilient tip of the plunger impacts the valve seat, the flexible support member absorbs substantially all of the force of impact by deflecting in the direction opposite the plunger movement, increasing impact time and reducing noise which may be generated. The resilient tip may be positioned on the flexible support member to further define a stop cushion to further reduce impact of the plunger against the valve stop.
Claims8
A valve assembly comprising:
- a valve body defining a chamber with a controlled port having a valve seat associated therewith;
- a stop supported within the chamber of the valve body in axial alignment with the controlled port;
- and
- a plunger reciprocable between the stop and the seat to open and close the controlled port respectively, the plunger having a body, a resilient flexible washer mounted on an end of the body and a resilient tip secured to the washer for sealing engagement with the valve seat, wherein the flexible washer deflects in a direction opposite to the plunger movement for reducing a force of impact on the seat.
A valve assembly comprising:
- a valve body defining a chamber with a controlled port having a valve seat associated therewith;
- a stop supported in the valve body coaxially aligned with the controlled port;
- and
- a solenoid assembly operable to move a plunger between opened and closed positions with respect to the controlled port, the plunger including a body, a flexible support member mounted on an end of the body and a resilient tip secured to the support member to define a first end adjacent the seat for sealing engagement with the seat, and a second end adjacent the stop for cushioning an impact of the plunger against the stop, wherein the flexible support member deflects in an opposite direction from a direction of movement of the plunger for reducing a force of impact on the seat and stop respectively.
Dependencies are inferred from the claim text.