Stall torque

Stall torque is the torque produced by a mechanical device whose output rotational speed is zero. It may also mean the torque load that causes the output rotational speed of a device to become zero, i.e., to cause stalling. Electric motors, steam engines and hydrodynamic transmissions are all capable of developing torque when stalled.

Electric motors

Electric motors [1] continue to provide torque when stalled. However, electric motors left in a stalled condition are prone to overheating and possible damage since the current flowing is maximum under these conditions.[2]

The maximum torque an electric motor can produce in the long term when stalled without causing damage is called the maximum continuous stall torque[2]

Hydrodynamic transmissions

A hydrodynamic torque multiplier (torque converter) produces stall torque when the load prevents the turbine (output stage) from rotating while the pump (input stage) is being driven. In most cases, damage due to overheating occurs if the stall condition persists for any significant length of time.

Combustion engines

In the case of a petrol (gasoline) or Diesel engine, the stall torque may refer to the torque load that causes the engine to stall. The actual amount of torque is dependent on engine RPM and throttle opening.

gollark: Because it somehow became a political issue, I think people mostly just end up believing that ivermectin is or isn't good based on their group's politics.
gollark: People probably *are* saying "horse dewormer" derogatorily, but I doubt it actually affects people's views on it very much.
gollark: You're not being very clear about what argument you're trying to make.
gollark: I see.
gollark: If by "the barber" you mean the definitely good Merck/Pfizer treatments, I don't think production of them has been ramped up enough for them to be readily accessible yet.

References
  1. Notes on Motors
  2. A solar car primer, Eric F. Thacher, Nova Publishers, 2003, ISBN 1-59033-308-X, 9781590333082 p86. Google books link:
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.