Parking Lock Test Stand

Whether it is for an electronic parking lock, a parking brake, or an immobilizer – our patented transmission test stand can be used for the validation of transmission parking locks on passenger cars (regardless of the type of powertrain), as well as on trucks and other industrial vehicles.         

The parking lock as part of the transmission is used to prevent the unintentional movement of a parked vehicle. Therefore, for safety reasons, it is particularly important that the parking lock functions perfectly throughout its entire service life.

Among other things, the test stand has been developed specifically for the validation of the transmission parking lock in electric vehicles, in order to simulate the loads that occur during real vehicle operation. One aim is to improve vehicle safety as part of electric mobility. 


Being at rest as a special case of motion

In addition to the handbrake, which today is often applied electronically, vehicles with a torque converter automatic transmission, a dual-clutch transmission, or an electric drive system all use an automated transmission locking device, also called a parking lock. The parking lock works by establishing a frictional connection between the tire-road contact and the body-powertrain suspension in the torque path of the vehicle’s drive train.

Test series:
Track widths of between 1,290 and 1,750 mm, maximum driving speeds of up to 150 km/h, and a maximum incline of 32 % can be simulated.

Test stand operation:
Fully automatic testing due to a real-time capable recording and control system. Residual bus simulation provides an individual test procedure according to the customer’s requirements. 


Parking lock load cases:
The test situations are divided into tests on static and dynamic load cases.
In static load cases, the activated locking mechanism is subjected to a static force. These forces include parking situations on a slope, parking in duplex garages, slow-speed impacts with other vehicles during parking maneuvers, a vehicle being transported, a vehicle being towed, or borderline situations, such as parking on a road that is slippery on one side only.  
Dynamic load cases occur when the parking lock is applied in a moving vehicle. This can range from the activation of the parking lock within the permitted driving speed range, for example when the vehicle is rolling to a standstill on a flat road or on a slope, to protection against malfunctions, for example if the parking lock is activated at a high driving speed.     


Parksperrenpruefstand der Firma Bertrandt

In order to verify the test stand results during the simulation of real load cases from vehicle operation, a complete and identical drive train is tested first in the vehicle on the road and then on the test stand.


Please contact us. We will be happy to respond to your enquiry.

Your Contact

Karl-Heinz Weinberger

Vice President Operations – eMobility Testing Solutions