Transmission control with essentially rateless regulator valve

Claim 2

In a regulator valve: primary fluid supply means having variable overage: secondary fluid supply means having limited flow requirements: regulator valve means having a body having a bore having in an opening direction order, a first overage land, a secondary supply port connected to said secondary supply means, a second overage land and an exhaust port; valve element means having a regulating land in said bore having a control edge, a second overage passage to said second overage port having full overage flow capacity and less axial length than said second overage land and the axial distance between said control edge and the remote edge of said second overage port being substantially equal to the axial length of the secondary supply port plus the second overage land reduced by the axial movement of the regulating land in the range of first overage regulating positions; chamber means between a portion of said bore and a portion of said valve element means connected to said primary fluid supply means to supply fluid to said control edge for regulated flow to said secondary supply port, to supply fluid to said second overage passage in said regulating land and to effectively act on an area of said valve element means; a spring acting on said valve element means providing an opposite valve closing bias force; said valve element means regulating main line pressure during low overage flow in a low overage flow regulating oscillating position with the control edge spaced from the first overage land and regulating first overage flow to said secondary supply port and said second overage poRt being blocked by said second overage land and with increasing overage flow said valve element means moving in an opening direction through a range of first overage regulating positions regulating increasing first overage flow and when the secondary supply means flow requirements are substantially met connecting overage to said secondary supply port substantially without regulation and regulating second overage flow from said second overage port at said second overage land and connecting overage to said exhaust port in a range of second overage regulating positions up to high overage flow at a high overage regulating position providing a full range of regulatory positions from low to high flow having movement less than the axial length of the second overage land providing essentially rateless primary supply pressure regulation and a secondary fluid supply from low to high overage flow.

Claim 3

In a regulator valve: primary fluid supply means having variable overage: secondary fluid supply means having limited flow requirements: regulator valve means having a body having a bore in an opening direction order, a first overage land, a secondary supply port connected to said secondary supply means, a second overage land and an exhaust port; valve element means having a regulating land in said bore having a control edge, a second overage port and a second overage passage to said second overage port having full overage flow capacity and less axial length than said second overage land and the axial distance between said control edge and the remote edge of said second overage port being substantially equal to the axial length of the secondary supply port plus the second overage land reduced by the axial movement of the regulating land in the range of first overage regulating positions; chamber means between a portion of said bore and a portion of said valve element means connected to said primary fluid supply means to supply fluid to said control edge for regulated flow to said secondary supply port, to supply fluid to said second overage passage in said regulating land and to effectively act on an area of said valve element means smaller than the area of said regulating land to provide a small valve opening bias force; a long spring acting on said valve element means providing an opposite valve closing bias force having a low rate of change of force with movement of said valve element means; said valve element means regulating main line pressure during low overage flow in a low overage flow regulating oscillating position with the control edge spaced from the first overage land and regulating first overage flow to said secondary supply port and said second overage port being blocked by said second overage land and with increasing overage flow said valve element means moving in an opening direction through a range of first overage regulating positions regulating increasing first overage flow and when the secondary supply means flow requirements are substantially met connecting overage to said secondary supply port substantially without regulation and regulating second overage flow from said second overage port at said second overage land and connecting overage to said exhaust port in a range of second overage regulating positions up to high overage flow at a high overage regulating position providing a full range of regulatory positions from low to high flow having movement less than the axial length of the second overage land providing essentially rateless primary supply pressure regulation and a secondary fluid supply from low to high overage flow.

Claim 4

In a regulator valve: primary fluid supply means having variable overage: secondary fluid supply means having limited flow requirements: regulator valve means having a body having a bore in an opening direction order, a first overage land, a secondary supply port connected to said secondary supply means, a second overage land and an exhaust port; valve element means having a regulating land in said bore having a control edge, a second overage port and a second overage passage to said second overage port having full overage flow capacity and less axial length than said second overage land and the axial distance between said control edge and the remote edge of said second overage port being substantially equal to the axial length of the secondary supply port plus the second overage land reduced by the axial movement of the regulating land in the range of first overage regulating positions; chamber means between a portion of said bore and a portion of said valve element means connected to said primary fluid supply means to supply fluid to said control edge for regulated flow to said secondary supply port, to supply fluid to said second overage passage in said regulating land and to effectively act on an area of said valve element means smaller than the area of said regulating land to provide a small valve opening bias force; a long spring acting on said valve element means providing an opposite valve closing bias force having a low rate of change of force with movement of said valve element means; said valve element means regulating main line pressure during low overage flow in a low overage flow regulating oscillating position with the control edge spaced from the first overage land and regulating first overage flow to said secondary supply port and said second overage port being blocked by said second overage land and with increasing overage flow said valve element means moving in an opening direction through a range of first overage regulating positions regulating increasing first overage flow and when the secondary supply means flow requirements are substantially met connecting overage to said secondary supply port substantially without regulation and regulating second overage flow from said second overage port at said second overage land and connecting overage to said exhaust port in a range of second overage regulating positions up to high overage flow at a high overage regulating position providing a full range of regulatory positions from low to high flow having movement less than the axial length of the second overage land providing essentially rateless primary supply pressure regulation and a secondary fluid supply from low to high overage flow.

Claim 5

In a regulator valve: primary fluid supply means having variable overage: secondary fluid supply means: regulator valve means having a body having a bore with a closed end; valve element means having a regulating land in said bore having a control end adjacent said closed end forming a chamber in said bore between the control end and the closed end of said bore connected to said primary supply means to provide a valve opening bias Force; a spring acting on said valve element means providing an opposite valve closing bias force; said valve bore having, in an opening direction order, a first overage land, a secondary supply port connected to said secondary supply means, a second overage land and said secondary supply port and second overage land having standard axial lengths; said regulating land having a second overage passage extending from said chamber axially to a second overage port having a smaller axial length than said second overage land and spaced from said control end an axial distance greater than the axial length of said secondary supply port and less than the axial length of the secondary supply port plus the second overage land; said valve element means regulating main line pressure during low overage flow in a low overage flow regulatory oscillating position with the control end spaced from the first overage land and controlling overage flow to said secondary supply port and said second overage port being blocked by said second overage land and with overage flow increasing to high overage flow moving to a high overage flow regulating oscillating position after the main line and secondary supply requirements are met connecting overage to said secondary supply port substantially without control and controlling overage flow from said second overage port at said second overage land and connecting overage to said exhaust port providing an axial range of regulatory positions less than the length of the second overage land providing essentially rateless main line pressure regulation and a secondary fluid supply from low to high overage flow.

Claim 6

In a regulator valve: primary fluid supply means having variable overage: secondary fluid supply means: regulator valve means having a body having a bore with a closed end; valve element means having a regulating land in said bore having a control end adjacent said closed end forming a chamber in said bore between the control end and the closed end of said bore connected to said primary supply means to provide a valve opening bias Force; a spring acting on said valve element means providing an opposite valve closing bias force; said valve bore having, in an opening direction order, a first overage land, a secondary supply port connected to said secondary supply means, a second overage land and said secondary supply port and second overage land having standard axial lengths; said regulating land having a second overage passage extending from said chamber axially to a second overage port having a smaller axial length than said second overage land and spaced from said control end an axial distance greater than the axial length of said secondary supply port and less than the axial length of the secondary supply port plus the second overage land; said valve element means regulating main line pressure during low overage flow in a low overage flow regulatory oscillating position with the control end spaced from the first overage land and controlling overage flow to said secondary supply port and said second overage port being blocked by said second overage land and with overage flow increasing to high overage flow moving to a high overage flow regulating oscillating position after the main line and secondary supply requirements are met connecting overage to said secondary supply port substantially without control and controlling overage flow from said second overage port at said second overage land and connecting overage to said exhaust port providing an axial range of regulatory positions less than the length of the second overage land providing essentially rateless main line pressure regulation and a secondary fluid supply from low to high overage flow.

Claim 7

The invention defined in claim 3 and said second overage port having an axial length not substantially more than one half the axial length of said second overage land.

Claim 8

In a regulator valve: primary fluid supply means having variable overage: secondary fluid supply means: regulator valve means having a body having a stepped bore with a large diameter portion and a small diameter portion; a closure closing the end of the large diameter portion remote from the small diameter portion; a restriction; valve element means having a large land in the large diameter bore portion having a control end adjacent said closure and a small land in the small diameter bore portion forming a first chamber in the large diameter bore portion between the control end of the large land and the closure connected to said primary fluid supply means and a second chamber in the stepped bore portion between the large and small lands connected through said restriction to said primary fluid supply means providing pressure acting on a small net area equal to said small land area to provide a small value opening bias force; a long spring acting on said valve element means providing an opposite valve closing bias force having a low rate of change of force with movement of said valve element means; said large valve bore having in an opening direction order, a first overage land, a secondary supply port connected to said secondary fluid supply means, a second overage land and an exhaust port having standard substantially equal axial lengths; stop means limiting closing movement of said valve element means to provide a closed position with said control end of said large land having a small overlap with said first overage land closing said first chamber; said large land having a second overage passage extending from said first chamber axially to a second overage port having about one-third the axial length of said second overage land and axially centrally located and blocked by said overage land when the valve element is in said closed position; said valve element means regulating primary fluid supply means pressure during low overage flow in a low overage flow regulatory oscillating position with the control end spaced from the first overage land and controlling overage flow to said secondary supply port and said second overage port being blocked by said second overage land and with Overage flow increasing to high overage flow moving to a high overage flow regulating oscillating position after the primary and secondary supply means requirements are met connecting overage to said secondary supply port substantially without control and controlling overage flow from said second overage port at said second overage land and connecting overage to said exhaust port providing an axial range of regulatory positions one-third the length of the second overage land providing essentially rateless pressure regulation and a secondary fluid supply from low to high overage flow.

Claim 9

In a regulator valve: primary fluid supply means having variable overage: secondary fluid supply means: regulator valve means having a body having a stepped bore with a large diameter portion and a small diameter portion; a closure closing the end of the large diameter portion remote from the small diameter portion; a restriction; valve element means having a large land in the large diameter bore portion having a control end adjacent said closure and a small land in the small diameter bore portion forming a first chamber in the large diameter bore portion between the control end of the large land and the closure connected to said primary fluid supply means and a second chamber in the stepped bore portion between the large and small lands connected through said restriction to said primary fluid supply means providing pressure acting on a small net area equal to said small land area to provide a small value opening bias force; a long spring acting on said valve element means providing an opposite valve closing bias force having a low rate of change of force with movement of said valve element means; said large valve bore having in an opening direction order, a first overage land, a secondary supply port connected to said secondary fluid supply means, a second overage land and an exhaust port having standard substantially equal axial lengths; stop means limiting closing movement of said valve element means to provide a closed position with said control end of said large land having a small overlap with said first overage land closing said first chamber; said large land having a second overage passage extending from said first chamber axially to a second overage port having about one-third the axial length of said second overage land and axially centrally located and blocked by said overage land when the valve element is in said closed position; said valve element means regulating primary fluid supply means pressure during low overage flow in a low overage flow regulatory oscillating position with the control end spaced from the first overage land and controlling overage flow to said secondary supply port and said second overage port being blocked by said second overage land and with Overage flow increasing to high overage flow moving to a high overage flow regulating oscillating position after the primary and secondary supply means requirements are met connecting overage to said secondary supply port substantially without control and controlling overage flow from said second overage port at said second overage land and connecting overage to said exhaust port providing an axial range of regulatory positions one-third the length of the second overage land providing essentially rateless pressure regulation and a secondary fluid supply from low to high overage flow.