Abstract: A shifting device for a hybrid drive system of a motor vehicle, with a centrally arranged shaft, a first gear wheel rotatably mounted relative to the shaft and a second gear wheel rotatably mounted relative to the shaft and offset along the shaft relative to the first gear wheel, a sliding sleeve slidably received directly in the first gear wheel and non-rotatably connected thereto, which sliding sleeve is configured such that, in a first displacement position, it connects the shaft in a rotationally fixed manner to the first gear wheel, while the second gear wheel is rotationally decoupled from the shaft, and in a second displacement position, it rotationally connects the shaft to both the first and second gear wheels, and in a third displacement position, it rotationally connects the two gear wheels to each other while the shaft is rotationally decoupled from the two gear wheels.

Abstract: A coupling and control assembly including a non-contact, inductive displacement sensor is provided. The assembly includes a controllable coupling assembly including first and second coupling members supported for rotation relative to one another about a rotational axis. The first coupling member has a first coupling face which has a sensor pocket which receives the sensor. A control member made of an electrically conductive material is mounted for controlled, small-displacement, shifting movement relative to the sensor. The sensor is configured to create a magnetic field to induce eddy currents in the electrically conductive material of the control member wherein shifting movement of the control member changes a magnetic field caused by the eddy currents. The sensor provides a position feedback signal for vehicle transmission control, wherein the signal is correlated with the position of the control member.

Abstract: The present invention provides a rotary shaft assembly applied to a novel clutch system that ensures a 100% torque transmission rate between an engine and a transmission in a vehicle system and can be commonly applied to conventional manual transmission vehicles and automatic vehicles. The rotary shaft assembly converts linear motion of one member to rotary motion of another member, using a combination of a protrusion and an inclined guide slot.

Abstract: The clutch assembly of the clutch system according to the present invention can precisely transmit or cut off power from an engine to a transmission by pressing and releasing of an accelerator pedal and a brake pedal.

Abstract: A transmission system includes a transmission assembly having clutches to transmit power from an input shaft to an output shaft at a plurality of gear ratios. A traction motor drives the input shaft and propels the work vehicle, while a controller controls operation of the transmission assembly and the traction motor. A hydraulic circuit controls actuation of the clutches responsive to commands from the controller. The hydraulic circuit includes a hydraulic pump driven by the traction motor, an accumulator connected to the hydraulic pump and that holds hydraulic fluid therein under pressure, and an unloading valve positioned in a secondary fluid path running from an outlet of the hydraulic pump to a sump. The unloading valve operates in a closed state to direct hydraulic fluid from the hydraulic pump to the accumulator and operates in an open state to direct hydraulic fluid from the hydraulic pump to the sump.

Abstract: A brake system damping device includes a first chamber on which hydraulic pressure is to be applied, a second chamber with a compressible medium located therein, and a first separating element configured to separate the first and second chambers. The damping device further includes a third chamber with a compressible medium located therein and a second separating element configured to separate the second and third chambers. The second and third chambers are connected in a medium-conducting manner via a passage in the second separating element. The first separating element is configured to move a closure element to close the passage when the hydraulic pressure in the first chamber has reached a predefined pressure value. The third chamber is formed by the second separating element and a cover. The second separating element is retained on the cover by an interference fit in a fluid-impervious manner.

Abstract: A through-connection clutch, for transferring torque between a motor and transmission of a vehicle, which has a friction clutch and a form-locking clutch. The form-locking clutch is disposed radially within the friction clutch, and the clutches can be actuated independently of each other. To minimize the required installation space, the through-connection clutch can be activated flexibly, but is still inexpensive to produce and ensures low-wear yet safe and comfortable torque transfer in a drive train of a vehicle. A pressure plate of the friction clutch and a form-locking element of the form-locking clutch are concentric, rotationally fixed together, and movable toward one another, and can be actuated via an actuation unit, which is rotationally decoupled from the pressure plate and the form-locking element. Depending on the operating situation, the friction clutch and/or the form-locking clutch is selectively activated one or more times.

Abstract: A method of cooling a dual clutch transmission is provided. The transmission has first and second input clutches alternately engagable to transfer torque to an output member along first and second input shafts, respectively, at various speed ratios dependent upon engagement of synchronizers. The method includes determining a currently established speed ratio by determining which of the input clutches and synchronizers are currently engaged and which of the input clutches and synchronizers are currently open. One of the open synchronizers is then engaged during the currently established speed ratio to cause the open input clutch to rotate at a speed greater than the speed of rotation of the engaged input clutch, thereby creating a fan cooling effect.

Abstract: Apparatus for controlling a selectable one-way clutch (SOWC) in an automatic transmission includes a ring-shaped control housing located substantially concentrically to the SOWC, and an actuation mechanism included within the ring-shaped control housing and effective to actuate a selector plate engaged with the SOWC from a default position to an actuation position. The selector plate is located between the ring-shaped control housing and the SOWC. A hydraulic fluid delivery system hydraulically communicates with the actuation mechanism to control the actuation of the actuation mechanism.

Abstract: A clutch arrangement has a rotary element which is mounted on a housing so as to be rotatable about a longitudinal axis and which defines a cavity. A clutch has a first clutch element and a second clutch element which can be coupled thereto, which clutch is arranged in the cavity. The first clutch element or the second clutch element is coupled to the rotary element. A fluidic actuator arrangement has a first and a second actuator element which can move relative to one another in order to activate the clutch. At least the first actuator element can be secured in a rotationally fixed fashion to the housing and extends from outside the rotary element into the cavity.

Abstract: A dual clutch, which has a first friction clutch pulled by a first lever actuator and a second friction clutch pushed by a second lever actuator. The lever actuators each have a lever that is spring-loaded on one side and lever tips which are moved by a bearing block. The bearing block can be moved radially with along a profile of the lever to set a variable contact point of the lever between a rigid base plate and the lever to act on actuating bearings of the friction clutches. The bearing block is actuated by force application in one of the radial directions of motion by a drive controlled by a control unit in an automated manner. The drive of both lever actuators is formed by a pneumatic controller. In each drive a piston is movable in a housing and is connected to the bearing block by a piston rod.

Abstract: An armature is magnetically attracted to and is coupled with a rotor against an urging force of a resilient member by a magnetic attractive force of the rotor when a permanent magnet is placed into a first position. When the armature is coupled with the rotor, a rotational drive force of an internal combustion engine transmitted to the rotor is transmitted to a refrigerant compressor connected to the armature to rotate the refrigerant compressor. The armature is urged away from and is decoupled from the rotor by the urging force of the resilient member when the permanent magnet is placed into a second position.

Abstract: An actuator shifts a selectable one-way clutch (SOWC) between a plurality of operating modes. A first spring has a preload compression that is equivalent to a first start pressure. A second spring, disposed adjacent to the first spring, has a preload compression that is equivalent to a second start pressure. A plunger movably contacts the first spring and a slide plate movably extends from the plunger. The slide plate engages the SOWC such that the SOWC shifts between the operating modes in response to movement of the slide plate. The first spring is compressible from beyond the preload compression to a first stop position as the pressure is increased from the first start pressure to a first stop pressure. The second spring is compressible from beyond the respective preload compression to a second stop position as the pressure is increased from the second start pressure to a second stop pressure.

Abstract: A power transmission device includes an actuator having an electric motor driving a pump to supply pressurized fluid to a piston acting on a friction clutch to transfer torque between rotatable input and output members. In one instance, a valve between the pump outlet and the piston selectively traps pressurized fluid acting on the piston without continued energization of the electric motor. A gerotor may be formed from a material having a first coefficient of thermal expansion and a housing formed from a material having a second lower coefficient of thermal expansion to vary pump component clearances as the viscosity of the pumped fluid changes with changes in temperature. A method of controlling the power transmission device includes defining a correlation between pump speed, fluid temperature and fluid pressure, determining fluid temperature, determining pump speed, and rotating the pump to transfer a predetermined quantity of torque.

Abstract: There is provided a power coupling device comprising first and second coupling members, at least one of which is capable of rotating about a common axis and relative to each other. The first coupling member has a pocket, and the second coupling member has notches. The power coupling member also comprises first and second struts arranged at least partly in the pocket. Each of the first and second struts is urged to emerge from the pocket and capable of engaging with one of the notches. The first strut is capable of transmitting torque between the first and second coupling members only in a first direction, and the second strut is capable of transmitting torque between the first and second coupling members only in a second direction that is opposite to the first direction.