Hybrid drive system for a motor vehicle

A hybrid drive system (10) for a motor vehicle, comprising:

• an input shaft (14) which is rotatably mounted around an axis of rotation (12) and via which torques provided by an internal combustion engine are introducible into the hybrid drive system (10);
• an output drive shaft (18) disposed coaxially with the input shaft (14);
• an electric machine (20) which has a stator (22) and a rotor (23);
• a torque converter (24) which has an impeller (26), a converter cover (28) connected to the impeller (26) in a manner fixed against rotation, an interior (32) for receiving oil and which is at least partially and directly delimited by the impeller (26), and a converter hub (30) which is connected to the converter cover (28) in a manner fixed against rotation, wherein the converter hub (30) is connected to the rotor (23) in a manner fixed against rotation;
• a separable clutch (34) having a disc pack (36), a clutch chamber (38) in which the disc pack (36) is received, an operating piston (40), and an associated operating chamber (42);
• and
• a cooling oil conduit (42) that is a direct connecting conduit between the interior (32) of the torque converter (24) and the clutch chamber (38) of the separable clutch (34) and runs within the converter hub (30), wherein via the cooling oil conduit (42) the disc pack (36) of the separable clutch (34) and the electric machine (20) are suppliable with the oil as cooling oil from the interior (32) of the torque converter (24).