Dual clutch transmission system

A dual clutch transmission system arranged to be installed in a power train of a motor vehicle for selectively coupling rotating transmission members, the transmission system comprising:

• a base assembly;
• a rotating assembly which is bearing mounted and rotatable with respect to the base assembly;
• first and second torque transmission assemblies being movable between disengaged and engaged positions;
• first and second actuation mechanisms associated with the first and second torque transmissions assemblies, wherein the actuation mechanisms are arranged for moving the respective torque transmission assemblies between the disengaged and engaged positions for selectively coupling the transmission members,
• wherein the first torque transmission assembly is arranged in the rotating assembly and is arranged to couple two rotating members in the engaged position and wherein at least the first actuation mechanism comprises a hydraulic actuation mechanism comprising a piston chamber and a piston for moving the first torque transmission assembly between the disengaged and engaged positions,
• wherein the piston chamber of the first actuation mechanism is arranged in the base assembly, and
• wherein the piston is arranged to actuate the first torque transmission assembly in the rotating assembly,
• wherein the second torque transmission assembly is arranged in the rotating assembly and is arranged to couple two rotating members in the engaged position and wherein the second actuation mechanism comprises a hydraulic actuation mechanism comprising a piston chamber and a piston for moving the second torque transmission assembly between the disengaged and engaged positions, wherein the second actuation mechanism comprises a biasing mechanism having a biasing force for biasing the second torque transmission assembly towards the disengaged position, wherein the piston chamber of the second actuation mechanism is arranged in the rotating assembly, wherein the system further comprises a controller for controlling the rotational speed of the rotating assembly, wherein the controller is arranged to limit the rotational speed of rotating assembly on the basis of the biasing force of the biasing mechanism;
• wherein the rotating assembly comprises a transmission coupled to an electric motor, wherein the controller is arranged to limit the rotational speed of the electric motor on the basis of the biasing force of the biasing mechanism, wherein the second torque transmission assembly is arranged to couple between the rotating assembly and an input shaft coupled to a combustion engine, and wherein the rotating assembly has no pressure compensation chamber associated with the piston chamber of the second actuation mechanism.

A dual clutch transmission system arranged to be installed in a power train of a motor vehicle for selectively coupling rotating transmission members, the transmission system comprising:

• a base assembly;
• a rotating assembly which is bearing mounted and rotatable with respect to the base assembly;
• first and second torque transmission assemblies being movable between disengaged and engaged positions;
• first and second actuation mechanisms associated with the first and second torque transmissions assemblies, wherein the actuation mechanisms are arranged for moving the respective torque transmission assemblies between the disengaged and engaged positions for selectively coupling the transmission members,
• wherein the first torque transmission assembly is arranged in the rotating assembly and is arranged to couple two rotating members in the engaged position and wherein at least the first actuation mechanism comprises a hydraulic actuation mechanism comprising a piston chamber and a piston for moving the first torque transmission assembly between the disengaged and engaged positions,
• wherein the piston chamber of the first actuation mechanism is arranged in the base assembly,
• wherein the piston is arranged to actuate the first torque transmission assembly in the rotating assembly,
• wherein the first actuation mechanism comprises a biasing mechanism for biasing the first torque transmission assembly towards the disengaged position,
• wherein the first actuation mechanism comprises an actuating member which is axially movable to move the first torque transmission assembly between the disengaged and engaged positions, and wherein the biasing mechanism is arranged between the actuating member and a body of the rotating assembly,
• wherein the actuating member comprises a radially extending actuating plate and at least one actuating finger extending perpendicular from the actuating plate,
• wherein the biasing member is coupled to the actuating finger,
• wherein a connecting bolt extends in the piston chamber of the first actuation mechanism, and wherein the connecting bolt extends through a body of the base assembly for locking a further component to said body.