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2019results about "Fluid actuated clutches" patented technology

Overrunning coupling and control assembly including apparatus having a latching mechanism

ActiveUS20100200358A1Improved overrunning couplingFluid actuated clutchesFreewheel clutchesCouplingActuator
Overrunning coupling and control assemblies, each of which includes control apparatus having a latching mechanism are provided. Each latching mechanism prevents an actuator arm of an overrunning coupling assembly from moving in a first direction substantially parallel to a shift direction of a control plate of the coupling assembly within a housing slot in a locked condition of the mechanism in a first position of the control plate. A control pressure signal within a bore of the housing changes the condition of the latching mechanism from locked to unlocked to unlock the actuator arm and causes the unlocked actuator arm to move along the first direction within the slot and the control element to move along the shift direction to a second position. The control pressure signal also causes a piston which has a groove formed in its outer surface to receive and retain a free end portion of the actuator arm to slide within the bore in the housing against the biasing force of the at least one biasing member. In the absence of a control pressure signal, the at least one biasing member moves the piston and thereby the unlocked actuator arm in a second direction opposite the first direction within the slot and the control element along the shift direction from the second position back to the first position and changes the condition of the latching mechanism from unlocked to locked to lock the actuator arm.
Owner:MEANS IND INC

Motor vehicle comprising a drive train having a multiple clutch drive

The invention relates to measures for controlling or reducing drag torque occurring in a multi-plate clutch device (202) due to temperature-related increased viscosity of an operating fluid which is supplied to the plates in operation. The aim of the invention is to enable a motor vehicle to be started or operated even at low temperatures. According to one aspect of the invention, a motor vehicle comprising a drive train is especially provided. Said drive train comprises a drive unit (238), gearbox (330) having a first gearbox input shaft and a second gearbox input shaft, and a clutch (202) having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. Said clutch devices are embodied in the form of plate clutches to which an operating fluid can be supplied, especially a cooling oil in order to operate the same. Said gearbox (330) is associated with an actuator device and a control device (316) for controlling the actuator device, the arrangement of which enables the gears associated with the first and second gearbox input shafts to be engaged and disengaged. According to the invention, the control device (316) is designed in such a way that at least one gear is automatically engaged by means of the actuator device (236), as a result of the clutch release of the vehicle.
Owner:VOLKSWAGEN AG +1

Start-up clutch assembly

InactiveUS6868949B2Reduce and eliminate undesirable vibrationReduce and eliminate and torque spikeFluid actuated clutchesFriction clutchesActuatorControl theory
A start-up clutch assembly (10) for translating torque between a prime mover and a transmission includes a drive member (16) and a clutch pack (30) is supported between the drive (16) and driven members (24). The clutch pack (30) is operable to move between a closed pack mode and an open pack mode to connect and disconnect the drive and driven members (16, 24) to selectively transfer and interrupt torque translation therebetween. A torque apply piston assembly (54) is operable to move between a disengaged position to connect and disconnect the drive and driven members and to provide a constant biasing force so that the clutch pack (30) normally operates in the closed pack mode to translate torque between the drive and driven members (16, 24). A torque interrupt actuator assembly (68) is connected to the torque apply piston assembly (54) and is operable to selectively move the torque apply piston assembly from its engaged position to the disengaged position to thereby interrupt torque translation between the drive and driven members through the clutch pack. A return piston assembly (84) is operable to provide a constant biasing force in a direction opposite to the constant biasing force generated by the torque apply piston assembly (54) to move the clutch pack (30) from the closed pack mode to the open pack mode when the torque interrupt actuator assembly (68) moves the torque apply piston assembly (54) from its engaged position to its disengaged position.
Owner:BORGWARNER INC

Hydrodynamic torque converter

A hydrodynamic torque converter includes a converter housing and a turbine wheel which is arranged in the converter housing and is rotatable with respect to the converter housing about a rotational axis of the converter. The torque converter further includes a lockup clutch for producing a torque transmission connection between the converter housing and the turbine wheel. The lockup clutch has a first friction surface arrangement held by a first friction surface carrier arrangement substantially fixed with respect to rotation relative to the converter housing, a second friction surface arrangement is held by a second friction surface carrier arrangement substantially fixed with respect to rotation relative to the turbine wheel, a contact pressing arrangement for pressing the first and the second friction surface arrangement against one another in frictional contact, and an abutment arrangement at which the first and second friction surface arrangement can be supported substantially in the direction of the axis of rotation when pressed by the contact pressure arrangement. The first friction surface carrier arrangement has a substantially annular body region connected either directly or indirectly with the converter housing and driver projections which are arranged at a distance from one another in the circumferential direction proceeding from the body region. Respective counter-driver projections at the first friction surface arrangement engage between these driver projections.
Owner:ZF FRIEDRICHSHAFEN AG
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