• In order to closely investigate the problem of "oilsucking",
realistic test runs of the viscous-coupling in gear oil should be possible.
• Test runs concerning the service life, done for several hours at a
constant temperature level are only possible in a cooling medium (e.g. gear oil).
Rebuilding always happens according to the manufacturer’s instructions, which allow for a tolerance band of ±10% regarding the characteristic curve. Deviating from its original state, a special valve is additionally screwed into the case cover in order to solve the problem of oilsucking:
An overview of the mechanical construction:
• An asynchronous motor fed by a frequency converter drives a planetary gear
• The hub of the viscous-coupling is powered by a drive shaft
• The analysis is done by a highly sensitive load cell following the principle of measuring the reactive torque.
• Case temperature of the viscous-couplingThanks to the vertical build of the test stand, it is also possible to conduct realistic test runs of the viscous-coupling in gear oil.
• Transmitted torque
• Measurement of the inner pressure (currently planned)