Abstract: A clutch actuation device is provided for dual clutches of a Dual Clutch Transmission. The clutch actuation device includes, but is not limited to a cylinder assembly that is substantially fixed to a clutch casing. The cylinder assembly includes, but is not limited to an inner annular chamber, an outer annular chamber, an inner annular piston, and an outer annular piston. The inner annular chamber is intended for receiving liquid under pressure and includes, but is not limited to an inner inlet. Similarly, the outer annular chamber is intended for receiving liquid under pressure and includes, but is not limited to an outer inlet. The outer annular chamber surrounds a portion of the inner annular chamber. The inner annular piston is slidably disposed in the inner annular chamber for actuating a first clutch disc whilst the outer annular piston is slidably disposed in the outer annular chamber for actuating a second clutch disc.

Abstract: A casing is provided for a dual clutch actuation device of a transmission. The casing includes, but is not limited to an internal inner liquid supply passage for connecting to the inner chamber and an internal outer liquid supply passage for connecting to the outer chamber. The inner liquid supply passage includes, but is not limited to a first inner straight section and a second inner straight section for connecting to the inner chamber. Similarly, the outer liquid supply passage includes, but is not limited to a first outer straight section and a second outer straight section for connecting to the outer chamber. In particular, the inner liquid supply passage is provided essentially adjacent to the outer liquid supply passage. The first outer straight section is at an incline relative to the first inner straight section.