Torque of prime movers : a general question

Replies

• 

  Jeffrey Arulraj

  The generated torque is spent in exerting work in the related drives The total torque produced is capable of supplying the torque lost in the driving process and the rest is got as torque op from the prime mover
  
  
  Tsh= Tg - mechanical losses
  
  Tsh= shaft torque
  Tg generated torque
• 

  zaveri

  No dude, what i meant to ask is that is any torque required to drive the engine/motor shaft ?
• 

  Jeffrey Arulraj

  Obvious Buddy if any device has to be moved from rest in a curved path a torque is required for this work to be done.
  
  I am not clear here buddy of the need here do clear
• 

  zaveri

  #-Link-Snipped-# #-Link-Snipped-# #-Link-Snipped-#
  
  can you clarify this guys ?
• 

  CE Designer

  zaveri

  Now when a prime mover like an electric motor or an I.C engine is designed to deliver a particular torque, then does this actually include the self weight of the crankshaft & flywheel /armature shaft ?

  They would have to take these things into account upon starting the engine. I am not expert in designing engines but from my knowledge of mechanics this is the only educated answer i have.
• 

  Ramani Aswath

  zaveri

  Now when a prime mover like an electric motor or an I.C engine is designed to deliver a particular torque, then does this actually include the self weight of the crankshaft & flywheel /armature shaft ?

  Yes it does. Because there is inertial energy stored in the rotating the crankshaft & flywheel /armature shaft, which has to necessarily come from the prime mover. When special applications like raising and lowering car windows and such require rapid attainment of speed, printed circuit or 'pan cake' motors with low inertia is used.
  Check this out:
  How real electric motors work