Hydrokinetic torque coupling device having turbine-piston lockup clutch, and related methods

摘要

A hydrokinetic torque coupling device features an impeller, a casing having a first engagement surface, a damper assembly, a turbine-piston including a drive component with a second engagement surface, and a clutch plate having clutch plate engagement surfaces interposed between and axially movable relative to at least one of the first and second clutch plate engagement surfaces. The turbine-piston is axially displaceable relative to the casing to move the second engagement surface axially towards and away from the first engagement surface for positioning the hydrokinetic torque coupling device into and out of a lockup mode in which the first and second engagement surfaces and the clutch plate engagement surfaces frictionally interlock with one another to non-rotatably lock the casing relative to the input part of the damper assembly.

主权项

1. A hydrokinetic torque coupling device for coupling a driving shaft and a driven shaft together, comprising:
an impeller comprising an impeller shell; a casing comprising a casing shell connected to the impeller shell, the casing having a first engagement surface; an axially displaceable turbine-piston coaxially aligned with and hydrodynamically drivable by the impeller, the turbine-piston comprising a turbine-piston shell and a drive component having a second engagement surface; a damper assembly comprising an input part drivenly interconnected to the turbine-piston and an output part operatively connectable to an output hub; and a clutch plate directly connected to the damper assembly and axially displaceable relative to the casing, the clutch plate having opposite clutch plate engagement surfaces interposed between and axially movable relative to at least one of the first and second engagement surfaces, wherein the turbine-piston is axially displaceable relative to the casing to move the second engagement surface axially towards and away from the first engagement surface for positioning the hydrokinetic torque coupling device into and out of a lockup mode in which the first and second engagement surfaces and the clutch plate engagement surfaces frictionally interlock with one another so that the casing is mechanically locked to and non-rotatable relative to the input part of the damper assembly.