Wabco Gmbh

Zf Cv Systems Europe Bv

Timo Gerlach

Tino Wiggers

Mike Heurich

Jan Spremberg

Stefan Knoke

Christian Brammer

Dennis Reimann

Hansjörg Kraft

Romain Poux

Lars Didwiszus

An actuator () for an automated or automatic transmission has a cylinder housing (), a piston unit (), and a piston rod (). The piston unit () is coupled to the piston rod () and is arranged movably in the cylinder housing () along a longitudinal axis (). The piston unit () separates two pressure chambers () of variable volume in the cylinder housing (). The pressure chambers are configured to load the piston unit () with compressed air on both sides. The two pressure chambers () are connected to a valve unit () for switching between pressurization and purging of each of the two pressure chambers (). An end stop clamping device for damping at least one end stop of the piston unit () is arranged in the actuator (). A pneumatically and a mechanically operating damping stage are provided improve the end stop damping device.

Actuator for an automated or automatic transmission, and method for controlling the actuator

A position measuring apparatus includes (a) a sleeve that has an open first end and a second end opposite the first end, (b) a guide pin guided at least partly in the sleeve, (c) a spring, (d) a linear magnetic field sensor and (e) a magnet disposed adjacent to the linear magnetic field sensor. To avoid wear even in the presence of large temperature fluctuations, the magnet is disposed on a face of the guide pin facing the second end of the sleeve, and the spring is disposed between the second end of the sleeve and the magnet such that the spring urges the magnet against the guide pin.

Position measuring apparatus

Growing community of inventors

Hannover, Germany

Timo Gerlach