Dual clutch torque transmission system with concentric clutches and cooling fluid supply, vehicle with the system and method of cooling the system

A dual clutch transmission system, including coaxial first and second torque transmitting assemblies that are engageable and disengageable, configured to be installed in a power train of a vehicle, the system including a main flow path for supply of cooling fluid,

• wherein the main flow path branches into a first flow path for supply of cooling fluid to the first torque transmitting assembly, and a second flow path for supply of cooling fluid to the second torque transmitting assembly,
• wherein the system includes a third flow path for supplying cooling fluid, which is discharged from the second torque transmitting assembly, to the first torque transmitting assembly, the third flow path being arranged within a space defined by a housing of the dual clutch transmission system,
• wherein the system includes a flow regulator configured to regulate the supply of cooling fluid to the second torque transmitting assembly through the second flow path,
• wherein at least part of the flow regulator is integrated with or associated with a movable operating member of the second torque transmitting assembly, and wherein the movable operating member of the second torque transmitting assembly is arranged to act as a valve member of the flow regulator providing a flow regulating section thereof, wherein said flow regulating section is movable onto and away from a valve seat that defines part of the second flow path, for closing and opening that flow path, respectively.