The industry's leading real-time engine simulation tool

Wave RT

WAVE-RT converts a donor WAVE model into a real-time engine model that accurately predicts crank-angle resolved engine behaviour throughout the air path and within individual cylinders. It does this through a combination of mathematical modelling based upon the quasi-propagatory model (QPM) and highly optimised code that results in a minimal reduction in model accuracy. It represents a suitable compromise between the accuracy of 1D computational fluid dynamics (CFD) models (such as WAVE) and lumped parameter models. Therefore, it is a significant advancement over traditional map-based approaches. 

What is it typically used for?

Developed to validate engine management systems, WAVE-RT can run on software-in-the-loop (SiL) and hardware-in-the-loop (HiL) environments, rapid prototype control units (rCube2) and mini computers equipped with ARM processors. It facilitates the design of advanced performance, emission and carbon dioxide (CO2) control strategies, and on-board diagnostic (OBD) algorithms. 

In addition, WAVE-RT can be used for virtual indicating, which provides access to states not easily measured, such as in-cylinder temperature and residual mass fraction augmenting experimental measurements.

Why use WAVE-RT?

  • It is fast and accurate:
    • Crank-angle resolved real-time predictions of an engine’s thermal-fluid physics:
      • Modelling of individual cylinders capturing cylinder-to-cylinder variations
      • Dynamic wave effects along air paths
        • No tuning required to compensate for wave effects
      • Global transient structure conduction
        • Cold starts and engine stop-start cool downs
    • 3-4 times faster than real-time
  • Models are just as detailed as the donor WAVE model
    • No geometry simplification needed
    • No limit on the number of elements or cylinders
    • Works with all fuels – diesel, gasoline and gas fuels
    • Standard turbomachinery
      • Fixed geometry compressors
      • Variable geometry turbines
      • Twin scroll turbines
    • Semi-predictive multi-Wiebe combustion
    • Predictive injection driven diesel combustion
    • Real-time spark ignition (SI) knocking model
  • Integrates with other tools
    • Export real-time engine models from a full WAVE ‘donor’ model directly from WaveBuild or R-Desk
    • Exported C code is American National Standards Institute (ANSI) standard and Motor Industry Software Reliability Association (MISRA) compliant
    • FMU export
    • MATLAB®/Simulink® S-function 

Relevant resources

Sensor-less engine control using WAVE-RT model running in rCube2 ECU

Sensor-less engine control using WAVE-RT model running in rCube2 ECU

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