Valve apparatus for compensating centrifugal forces
AssigneeGeneral Motors Corporation
InventorsRaymond J. Haka, Paul D. Stevenson
Life of this patent
Estimating the term…
Abstract
A control valve apparatus for a rotating clutch includes a valve having a spool portion and a mass portion. The spool portion provides a control function to distribute pressure from a static source to a chamber of the clutch. The valve also has a mass associated therewith which is responsive to rotation of the clutch and valve apparatus such that the apply pressure and the centrifugal effective pressure operating on the valve and the mass centrifugal force is compensated for to maintain the pressure at a specific radius of the clutch equal to the static apply pressure of the pressure source independent of rotation speed.
Claims6
A control valve apparatus for controlling fluid pressure within a rotating chamber having an axis of rotation said valve comprising:
- a source of pressure for supplying an apply pressure to said rotating chamber;
- a valve member disposed within a valve bore and having a mass with a center of gravity disposed on one side of said axis of rotation, said valve member having a first area subjected to said apply pressure and a centrifugal pressure, and a second area connected with said chamber and subjected to only the pressure in said chamber;
- and
- said mass of said valve acting in addition to the pressure at said second area to balance said valve wherein the pressure in said chamber is equal to the apply pressure.
A control valve apparatus for controlling fluid apply pressure within a rotating chamber having an axis of rotation said valve comprising:
- a source of pressure for supplying a fluid pressure to said rotating chamber, said fluid pressure having a centrifugal component and an apply component;
- a valve having two pressure sensitive areas and a mass, said valve rotating about said axis with said rotating chamber, a first of said pressure sensitive areas being subjected to said fluid pressure to urge the valve to a position for admitting said fluid pressure to said rotating chamber, a second of said pressure sensitive areas being subjected to a pressure in said rotating chamber to urge said valve to limit the pressure therein to said fluid apply pressure, and said valve having a mass imposing a centrifugal force on said valve to assist in limiting said pressure in said rotating chamber to said fluid apply pressure.
A control valve apparatus for controlling fluid pressure within a rotating chamber having an axis of rotation said valve comprising:
- a source of pressure for supplying an apply pressure to said rotating chamber;
- a valve member disposed within a valve bore and having a mass with a center of gravity disposed on one side of said axis of rotation, said valve member having a first area subjected to said apply pressure and a centrifugal pressure, and a second area connected with said chamber and subjected to only the pressure in said chamber, said valve member includes a valve spool and one of said first and second areas is a differential area and the other of said areas is formed at one end of said valve spool;
- and
- said mass of said valve acting in addition to the pressure at said second area to balance said valve wherein the pressure in said chamber is equal to the apply pressure.
Dependencies are inferred from the claim text.