VARIATOR MULTIPLEX VALVE SCHEME FOR A TORROIDAL TRACTION DRIVE TRANSMISSION
摘要
An apparatus and method are disclosed for controlling fluid flow to a variator which responsive to separate high and low pressure fluids to control an output torque thereof. A first trim valve may be responsive to a first control signal to supply a first fluid at a fluid outlet thereof. A second trim valve may be responsive to a second control signal to supply a second fluid at a fluid outlet thereof. A variator switching sub-system may controllably supply the high pressure fluid and the low pressure fluid to the variator. A multiplex valve may be fluidly coupled to the outlets of the first and second trim valves, and may supply the first fluid as the high pressure fluid to the variator switching sub- system during at least one predefined operating condition and may otherwise supply the second fluid as the high pressure fluid to the variator switching sub-system.
申请公布号
WO2012082871(A1)
申请公布日期
2012.06.21
申请号
WO2011US64865
申请日期
2011.12.14
申请人
LONG, CHARLES, F.;WEBER, DARREN, J.;FULLER, JOHN, WILLIAM EDWARD
发明人
LONG, CHARLES, F.;WEBER, DARREN, J.;FULLER, JOHN, WILLIAM EDWARD