Hydraulic accumulators drive the gearbox by allowing the manufacturer to install a smaller hydraulic system. However, the installation of the hydraulic system is complicated by the fact that the steel piston in the accumulator requires the installation of a precision seal assembly. According to foreign media reports, Freudenberg Sealing Technologies has developed a new plastic piston that relies on single-part sealing technology to help save energy and reduce the challenge of installing hydraulic systems in dual-clutch gearbox applications. The piston eliminates the need for three components in the sealed package, making installation easier and lighter.
Whether used in classic internal combustion engines or innovative hybrid systems, the dual-clutch gearbox ensures driving pleasure and shifts without uninterrupted traction. Over the years, hydraulic accumulators have been used to perform hydraulic actuation of gear drives. And buffer peak hydraulic demand as efficiently as possible.
The new plastic piston developed by Freudenberg Sealing Technology replaces the steel pistons used to date. Steel pistons are produced during the forming process and are equipped with carefully designed sealing components, including two guide rings that ensure the necessary sliding properties. The piston ring also requires an additional support ring to be fixed. In contrast, the new plastic piston is produced during the injection molding process, requiring only one seal ring to be installed.
As the material changes, the weight of the piston can be reduced by about half. Since the hydraulic accumulator is now installed with fewer components, the installation process is simplified and the reliability of the production process is improved.
Freudenberg Sealing Technology, in cooperation with a German car manufacturer, continues to develop hydraulic accumulators with plastic pistons for use in mass-produced hybrid vehicles. In a wide range of tests, the technology has proven Have the maturity of the road.