Is there any way to vary the torque of a gerotor

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Discussion Overview

The discussion centers on the ability to vary the torque of a gerotor motor, exploring the mechanisms and conditions under which torque can be adjusted without changing the size or shape of the gerotor itself. Participants examine the relationship between pressure and torque, as well as the implications of flow rate and RPM in hydraulic systems.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about methods to vary the torque of a gerotor motor, noting that the same gerotor can produce different torques.
  • One participant states that torque is proportional to the pressure drop across the gerotor, suggesting that increasing supply pressure or reducing exit pressure can increase torque.
  • Another participant questions the definition of exit pressure, leading to clarification that it refers to the pressure at the outlet of the motor.
  • A later reply confirms that torque can be varied by increasing hydraulic pressure, but notes that the flow rate is typically fixed by the pump, which limits the RPM of the gerotor motor and consequently the torque that can be achieved.

Areas of Agreement / Disagreement

Participants express differing views on the mechanisms for varying torque, with some agreeing on the role of pressure while others raise questions about the implications of flow rate and RPM. The discussion remains unresolved regarding the practical methods for achieving variable torque.

Contextual Notes

Limitations include assumptions about the hydraulic system's fixed flow rate and the specific conditions under which torque can be varied, which are not fully explored.

David lopez
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Can you vary the torque of a gerotor motor? I am having trouble finding an answer on the internet. The same
Gerotor will produce different torques.
 
Engineering news on Phys.org
https://en.wikipedia.org/wiki/Gerotor said:
Ge-rotors are widely used today throughout industry, and are produced in a variety of shapes and sizes by a number of different methods.
 
That doesn't tell me how to vary the
Torque of the same gerotor motor. This same gerotor might produce three different torques. I want to know how
To vary the torque without using a different gerotor of a different size or
Shape.
 
The torque is proportional to the pressure drop across it. Increase the supply pressure or reduce the exit pressure to get more torque.

Cheers,
Tom
 
What is exit pressure?
 
David lopez said:
What is exit pressure?
The pressure at the outlet of the motor.
 
David lopez said:
Can you vary the torque of a gerotor motor?
Yes. Increase the hydraulic pressure provided to the motor.

But gerotor flow rate is proportional to RPM.
Since flow rate is usually fixed for a hydraulic system by the pump, there will be a limit to gerotor motor RPM.
Hydraulic pressure will fall and torque will be limited at that volumetric flow rate determined motor RPM.
 

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