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2018.1 Release Notes – Engine Dynamics Library 2.1

Release Notes for Engine Dynamics Library 2.1

Engine Dynamics Library 2.1 is part of Modelon’s 2018.1 release.

New versions of Modelon libraries are sold and distributed directly from Modelon, as well as approved resellers.

New features

  • Added support for spark ignited engines, including an equation based, mean value combustion model.
  • Added more pre-defined engine system examples, which now include naturally aspirated, turbo charged with and without exhaust gas recirculation and wastegate.


  • Start value parameters can be provided in source models. For a flow source, the user can specify the initial pressure and for a pressure source, the initial massflow rate. This may help improving convergence in steady-state initialization of component test cases.
  • Division by zero in turbomachinery components have resolved by using epsilon instead of 0 in the max-functions in EquationBasedJensen & StodolaWatson.

Conversion of user libraries

User models can be automatically converted using the provided conversion script.


Engine Dynamics Library 2.1 is based on the Modelon Base Library 3.1 and Modelica Standard Library 3.2.2.

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