Transmission development is a focus for emissions reduction. Dual-clutch transmissions or automatic transmissions with eight or more gears not only increase the efficiency of the drivetrain but also create new challenges.
Higher load generation is one major challenge of dual-clutch transmissions and seals from Freudenberg Sealing Technologies made from PEEK (polyetheretherketone) or PAI (polyamideimide), in conjunction with their low-torque design, are a dependable solution to high load pressure. And Gallagher is proud to be your Freudenberg Sealing Technologies distributor.
Value to the Customer
PEEK and PAI thermoplastics are available for load profiles above 35MPa m/s which occur in dual clutch transmissions. Freudenberg Sealing Technologies uses PEEK and PAI materials in its own seal designs to keep power dissipation and leakage rates low even at high PV values.
Freudenberg Sealing Technologies PEEK and PAI products:
- Demonstrate a consistent, friction optimizes profile for maximum pressure relief which results in very little heat input at the sealing point
- Reduce leakage in the lock area to a minimum with PEEK and PAI 3-D lock-in rings.
Fuel Consumption is minimized because:
- The profile cross-section in PEEK and PAI seals relieves pressure and reduces friction.
- The 3-D ring lock for PEEK and PAI seal rings is designed to minimize leakage.
Features and Benefits
Optimal Material Selection For Application
To fully take advantage of each seal material, it is crucial to consider the choice of materiel in terms of their technological and economic parameters and discriminate between them. As a basis for the determination, and PV value — the product of oil pressure (P) and the relative sliding speed (V) between the shaft and the relative sliding speed — is the proven way to describe the load profile.
A complete portfolio of materials listed below is available from Freudenberg Sealing Technologies for specific application requirements.