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What is PISDYN?

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Download Information Flyer - An Integrated Solution to the piston system

PISDYN is an advanced three-dimensional simulation package for predicting the dynamics of the piston and connecting rod assembly - enabling the optimisation of the piston geometry and minimising the need for expensive and difficult testing. Based around an advanced lubrication model for simulating the interface between the piston and liner, the engineer can use a hierarchy of structural models to minimise scuffing, wear, friction loss and piston slap.


  • Piston Dynamics - Calculating the secondary motions of the piston/liner systems allow the user to understand how they interact with the lubrication at the component interfaces throughout the engine cycle.
  • Finite Element Modeling - Essential for calculating the mass and stiffness required for dynamic and compliant analyses, as well as deformations due to thermal, pressure and inertia loads.
  • Case Study - Validate the friction predicition capabilities of PISDYN and RINGPAK.
  • Case Study - Validate the piston secondary motion, piston slap, and liner vibration prediction capability of PISDYN.

Key Features

  • Advanced EHL mass conserving lubrication model for piston/liner interface
  • Hydrodynamic and boundary lubrication models
  • Single piece and articulated pistons
  • Hierarchy of rigid, compliant and dynamic structural models
  • Integrated FEARCE solver for FE matrix reduction



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