top of page

Parking Lock


The simulation of a parking lock using a parametric contact model for gear geometry is a sophisticated approach in automotive engineering, particularly within transmission systems. The objective is to design the gear engagement such that the parking lock activates at a specific rotational speed. This requires a precise configuration of gear geometry to ensure reliable operation considering various load factors.

Concept of the Parking Lock

A parking lock in a vehicle's transmission is a mechanism that prevents movement when the vehicle is parked. It typically engages a pawl with the gear teeth connected to the transmission. The challenge is to develop gear geometry that allows engagement at the desired speed while maintaining mechanical integrity under load conditions.

Parametric Contact Model

A parametric contact model describes the interaction between engaged surfaces under load. It considers tooth geometry, material stiffness and contact conditions.

Influencing Factors

  • Drivetrain Elasticity: The elasticity in the drivetrain affects how forces are distributed within the transmission, influencing the parking lock's function.

  • Vehicle Mass: The mass of the vehicle significantly impacts the load on the parking lock. Heavier vehicles require more robust mechanisms to ensure stability when parked.


Optimization and Validation

After simulation, the gear geometry is optimized to balance durability and functionality. Prototypes are then manufactured and validated in real vehicle tests to ensure the parking lock operates as intended. This advanced methodological approach allows engineers to develop precise and reliable parking lock systems, significantly contributing to the overall safety and reliability of modern vehicles.

bottom of page