Bidirectional Clutch Piston Locking Against Residual Pressure Drift

The patent applies preliminary anti-action by introducing a return spring that pre-exerts a counteracting force on the switching piston to compensate for residual hydraulic pressures. The spring is pre-loaded to generate a force that opposes the unwanted axial movements caused by residual pressure, thereby preventing functional safety issues before they occur.

The return spring acts as an intermediary element between the hydraulic actuation system and the switching piston. It mediates the interaction by providing a mechanical counterforce that balances the residual hydraulic pressure, allowing the piston to remain stable in its positioned state without direct intervention from additional valves or complex control mechanisms.

The return spring enables the clutch system to self-regulate residual pressures without requiring additional valves or complex control systems. The spring automatically generates the necessary counterforce based on the piston's position and the residual pressure conditions, allowing the system to maintain functional safety through its own internal mechanisms rather than external additions.

The patent extracts the complex valve system from the solution by replacing it with a simple return spring mechanism. Instead of adding sophisticated pressure control valves to manage residual pressures, the invention removes the need for such complex components by using the spring's elastic properties to naturally counterbalance the residual pressures.