Generator Belt Shrinkage and Burn
Generator Belt Shrinkage and Burn
(OP)
Hi All ; I have designed generator driven belt and pulley system and used mercedes bus belt tensioner to tension 8 PK 1150 belt at 21 kW load.
The tension is around normal levels as i measured by gates tension meter.
The system has a flywheel shaft with 200 pulley on it and it is driving a 100 mm diameter pulley.
The 100 mm pulley is in the middle of the transfer shaft this shaft is heaving a 15 kW shock load every time the Air condition compressor clutch activates. (6 kW of the load is continous from the alternator)
This power is enough power to stall the engine but engine wins the stall and regenerates the normal 1500 rpm.
In one of the systems today we noticed that one of the Dayco belt was shrinked from 1150 to 1120 mm.
The engine room temperature is 90 Degrees Celcius
We are using cast iron pulleys
The engine room side is well ventilated
There were many signs of burn on the back side of the belt.
Is this normal or do i have system design failure.
You may find several pictures of the system as attached.
The tension is around normal levels as i measured by gates tension meter.
The system has a flywheel shaft with 200 pulley on it and it is driving a 100 mm diameter pulley.
The 100 mm pulley is in the middle of the transfer shaft this shaft is heaving a 15 kW shock load every time the Air condition compressor clutch activates. (6 kW of the load is continous from the alternator)
This power is enough power to stall the engine but engine wins the stall and regenerates the normal 1500 rpm.
In one of the systems today we noticed that one of the Dayco belt was shrinked from 1150 to 1120 mm.
The engine room temperature is 90 Degrees Celcius
We are using cast iron pulleys
The engine room side is well ventilated
There were many signs of burn on the back side of the belt.
Is this normal or do i have system design failure.
You may find several pictures of the system as attached.





RE: Generator Belt Shrinkage and Burn
RE: Generator Belt Shrinkage and Burn
All, here is the link to aliccan's second post in Mechanical Engineering Other Topics:
http://eng-tips.com/viewthread.cfm?qid=327899
Good on ya,
Goober Dave
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RE: Generator Belt Shrinkage and Burn
Figure it out
RE: Generator Belt Shrinkage and Burn
RE: Generator Belt Shrinkage and Burn
Thanks for your answers.
RE: Generator Belt Shrinkage and Burn
Terry