Abstract
KEYWORDS
Test-rig efficiency, transmission efficiency, planetary torque unit, automobile transmission testing
ABSTRACT
The closed-loop stand for gear-box testing has its main advantage in small power demand. The electromotor has to provide the sum of power losses in the stand, which are 20 to 40 % of the test power – depending on configuration of the test stand. This is especially important value when performing endurance long-run tests.
Czech Technical University started to operate new closed-loop stand designed by Technical University in Ostrava. There are two main specialties of the test stand:
• The gear-boxes are installed the same way as they are functioning in the car – with use of silent blocks and reaction struts.
• Two types of mechanisms for change of load are available.