@@himawariahgasi8042 Depends on oil viscosity it can work upto 100 degree Celsius but according to operating conditions and seal temperature limits the fusible plug is equipped there which limits its operation up to certain range.
@@himawariahgasi8042 if a fluid coupling temperature is rising above its normal range, this means more slipping occurs. So in that conditions check the oil level. At different oil levels different slippages will occur. This slippage produces heat. A physical inspection of oil is enough. See the service manual for running hours and oil change.
So, a fluid coupling is kinda like a Tesla turbine?...only the impeller blades are 90° from the position they are found in a Tesla design but the clutch looks more like a Tesla turbine...
No. Fluid couplings actually provide smooth acceleration. And the motor can start with a no load condition means motors can start with its high starting torque value.
The word "efficiency" get's flashed around like a casual by-word. I have asked and asked yet no-one (so far) has been able to quote specific numbers or present graphical test results of the efficiency of the Fottinger hydraulic coupling. My general understanding from the automotive world is that it is unlikely to exceed much above ~80% whereas a well-designed fully-geared drive can exceed 90%. This is an important detail in respect of fuel consumption. My understanding is that ROLLS-ROYCE dyno tested salvaged DB's and analysed their supercharger drive design and efficiency. This must have generated an official report as this testing was commissioned by the R.A.E. I would like to see that report. It would go a long way toward explaining the mystery as to why R-R (and others) never copied it. Does any know for sure??
What is the standard temperature range for fluid coupling operation?
@@himawariahgasi8042 Depends on oil viscosity it can work upto 100 degree Celsius but according to operating conditions and seal temperature limits the fusible plug is equipped there which limits its operation up to certain range.
@@EngineeringDots do we need oil sampling for analysis?
@@himawariahgasi8042 if a fluid coupling temperature is rising above its normal range, this means more slipping occurs. So in that conditions check the oil level. At different oil levels different slippages will occur. This slippage produces heat.
A physical inspection of oil is enough.
See the service manual for running hours and oil change.
@@EngineeringDots ok thank you so much
video was quite informative ,many things were explained at ease :)
Glad it was helpful!
Can it become unbalanced? And cause hi vibration to motor inboard side
Yes. It can.
Unbalanced rotating mechanical components/device's will always cause vibration.
Usefull content 😊
Yeah yeah😭
Glad to hear that
So, a fluid coupling is kinda like a Tesla turbine?...only the impeller blades are 90° from the position they are found in a Tesla design but the clutch looks more like a Tesla turbine...
Thanks for your time
Can a fluid coupling or torque converter increase torque of AC motor?
No. Fluid couplings actually provide smooth acceleration. And the motor can start with a no load condition means motors can start with its high starting torque value.
The word "efficiency" get's flashed around like a casual by-word. I have asked and asked yet no-one (so far) has been able to quote specific numbers or present graphical test results of the efficiency of the Fottinger hydraulic coupling. My general understanding from the automotive world is that it is unlikely to exceed much above ~80% whereas a well-designed fully-geared drive can exceed 90%. This is an important detail in respect of fuel consumption. My understanding is that ROLLS-ROYCE dyno tested salvaged DB's and analysed their supercharger drive design and efficiency. This must have generated an official report as this testing was commissioned by the R.A.E. I would like to see that report. It would go a long way toward explaining the mystery as to why R-R (and others) never copied it. Does any know for sure??
Comment appreciated.
Thanks for your time.
Thanks for your precious experience you shared.
Thanks
we are glad. you like it
Thanks
Fuse plug in the fluiddrive
yes, its fusible plug for safety i.e. in jam conditions.
thanks.