Zf Friedrichshafen Ag

Daimler Chrysler Ag

Presswerk Struthütten Gmbh

Michael Jud

Florian Weinl

Thomas Schwegler

Julia Klein

Armin Haugg

Simon Jenko

Carsten Haertel

A parking lock for a transmission of a motor vehicle having an interlocking element of a connecting rod that is biased against a parking lock disengagement direction to bring and keep a ratchet tooth of a locking pawl in engagement with a tooth space of a parking interlock gear during an engagement of the parking lock. The connecting rod is provided a spring force acting in a parking lock engagement direction from an inserting spring and a compressive force acting in the parking lock disengagement direction from a hydraulically actuatable actuator having first piston pressurizable to disengage the parking lock. A detent device actuatable by an electromagnet mechanically fixes the first piston in either a latched or unlatched piston position associated with an engaged or disengaged position of the parking lock, respectively. A system determines a current engagement position of the detent device by assessing an inductance at the electromagnet.

Parking interlock in a vehicular transmission

A motor vehicle transmission with a frictional parking lock mechanism is particularly suitable for shift-by-wire applications. The frictional parking lock mechanism makes it possible to have convenient controllability, as compared with positive parking lock mechanisms.

Motor vehicle transmission with a parking lock mechanism

Growing community of inventors

Maikammer, Germany

Michael Jud