A device for actuating a clutch, having an actuator with a pneumatic chamber (K.sub.P) delimited by a pneumatic active area (A.sub.P), two hydraulic chambers (K.sub.H1, K.sub.H2) each delimited by a hydraulic active area (A.sub.H1, A.sub.H2), and a control element (G) that is actively connected to the clutch and can be moved and subjected to a force by the active areas. The pneumatic active area is subjected to a pneumatic pressure by a compressed air source (Q.sub.P) to generate force in an actuating direction (B). The hydraulic chambers can each be hydraulically connected to a storage container (Q.sub.H) for hydraulic fluid by an electromagnetically actuatable 2/2-way proportional valve (V.sub.H1, V.sub.H2). Furthermore, a control system (CPU) is provided to independently control the pressure application of the pneumatic chamber and valve positions of the 2/2-way proportional valves.

Disclosed is a regulator for clutch operating mechanism. The regulator includes a main body, a supply flow path for fluid flow from a master cylinder to an operating cylinder, and a return flow for fluid flow from the operating cylinder to the master cylinder inside of the main body. The regulator further includes a first valve installed inside the main body and configured to close an exit of the return flow path and open the supply flow path when the fluid flows to the operating cylinder and a second valve installed inside the main body configured to close an exit of the supply flow path and to open the return flow path when the fluid flows to the master cylinder. The regulator further includes a damping apparatus having a damping space which communicates with the supply flow path of the main body and whose internal capacity changes according to hydraulic pressure.

A regulator for clutch actuator includes a housing having a cylindrical damping space inside, a first fluid path interconnecting the damping space and a master cylinder, and a second fluid path interconnecting the damping space and a an operating cylinder. The regulator further includes a flexible valve member contained in the damping space for reducing vibrations. The flexible valve member comprises a first inflow guiding portion configured to receive and guide fluid from the first fluid path. The first inflow guiding portion has a plurality of through holes such that elastic deformation of the first inflow guiding portion reduces vibration when fluid flow into the cylindrical damping space from the master cylinder.

A hydraulic transformer clutch employs radial hydraulic piston assemblies with integrated electrohydraulic actuation. The hydraulic transformer clutch includes: an output shaft, an output disc affixed to the output shaft for rotation therewith, an input shaft, a rotatable housing affixed to one of the input shaft or the output shaft for rotation therewith, a plurality of hydraulic cylinders, and a plurality of working pistons. The hydraulic cylinders are operatively connected to the rotatable housing, and are spaced about the rotatable housing. Each working piston is slidably mounted within a corresponding hydraulic cylinder of the plurality of hydraulic cylinders, and is positioned to be selectively pushed, when actuated, to create a rigid connection between the input shaft and the output shaft. One or more actuator pistons are pushed by an electromagnet and create pressure that is distributed on working piston surfaces and generates active torque.

A clutch pedal vibration reduction apparatus configured for adjusting damping force, may include a vibration absorbing damper for absorbing vibration transmitted to a clutch pedal, wherein a space is formed in the vibration absorbing damper, an internal thread is formed at an inlet, and a damping force adjusting device for adjusting damping force is thread-coupled to the internal thread inside the space.

The present disclosure relates to a vibration damper for a hydraulic clutch actuator. The vibration damper comprises a rigid housing comprising a chamber, and an inlet port and an outlet port forming a channel, the channel being in fluid communication with said chamber, and a propeller comprising a plurality of at least two blades, the propeller being rotatably mounted in said chamber, and a spiral torsion spring connected to said propeller in such a way that rotation of the propeller causes winding or unwinding of the spring.

A damping device for a clutch actuating device is provided. The damping device includes a first cylinder that is connected to a master cylinder by a first hydraulic line and a second cylinder that is connected to an actuating cylinder by a second hydraulic line and is disposed at a position adjacent to the first cylinder in parallel. A first piston is disposed in the first cylinder and is moved forward and backward by a fluid pressure in the first cylinder. A second piston is disposed in the second cylinder and is moved forward and backward by a fluid pressure in the second cylinder. A pressure transmitting member is supported to perform a seesaw motion when both sides of the pressure transmitting member are in contact with a pressing portion of the first piston and a pressing portion of the second piston.

A device for vibration reduction in a hydraulic actuating system has a housing in which a pressure chamber is able to be disposed in fluid connection with the actuating system by way of at least one connection and bounded by a resilient membrane. The membrane has a pressure-loadable surface and a surface which is remote therefrom and provided with a profiling, by way of which the membrane when loaded with pressure can be supported on a fixed wall section of the housing and which has at least one web section comprising at least one web with a web foot, a web end adjacent to the wall section, and a defined web cross-section. The web is of asymmetrical construction with respect to a notional plane extending normal to the pressure-loadable surface through the web foot and perpendicularly to the web cross-section.

A damping device for a clutch actuating device is provided. The damping device includes a first cylinder that is connected to a master cylinder by a first hydraulic line and a second cylinder that is connected to an actuating cylinder by a second hydraulic line and is disposed at a position adjacent to the first cylinder in parallel. A first piston is disposed in the first cylinder and is moved forward and backward by a fluid pressure in the first cylinder. A second piston is disposed in the second cylinder and is moved forward and backward by a fluid pressure in the second cylinder. A pressure transmitting member is supported to perform a seesaw motion when both sides of the pressure transmitting member are in contact with a pressing portion of the first piston and a pressing portion of the second piston.

Disclosed a regulator for clutch actuator. The regulator for clutch actuator includes a housing having a cylindrical damping space inside, a first fluid path interconnecting the damping space and a master cylinder, and a second fluid path interconnecting the damping space and a an operating cylinder. The regulator further includes a flexible valve member contained in the damping space for reducing vibrations. The flexible valve member comprises a first inflow guiding portion configured to receive and guide fluid from the first fluid path. The first inflow guiding portion has a plurality of through holes such that elastic deformation of the first inflow guiding portion reduces vibration when fluid flow into the cylindrical damping space from the master cylinder.