Change the minimum displacement of a variable-displacement pressured-compensated pump

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I am using a variable-displacement pressured-compensated pump in my hydraulic system. The MathWorks Help says: The displacement can be changed from its maximum value down to zero. Is there a way to change the minimum displacement from zero to another value smaller than its maximum displacement? For expample: The datasheet provides a p-Q-Diagram of a variable-displacement pressured-compensated pump with a maximium displacement of 35 L/min at minimum pressure and a minimum displacement of 5 L/min at maximum pressure.
Thank you very much for your help
Best regards,

Accepted Answer

Jocie Kluger
Jocie Kluger on 11 Jun 2021
Hi Sebastian,
This is a limitation of the Variable-Displacement Pressure-Compensated Pump in the Hydrualic domain. The Pressure-Compensated Pump (IL) in the Isothermal Liquid library has an option to set a nonzero Minimum displacement. You can interface the Isothermal Liquid block with the Hydraulic domain network using an Interface (H-IL) block, or upgrade the entire model to the new Isothermal Liquid domain using the hydraulicToIsothermalLiquid function.
Jocie Kluger
Jocie Kluger on 21 Jun 2021
I'm glad to hear you resolved the issue and the results match real-world data. It's a neat workaround trick.

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