Fast Running Engine Models (FRMs) for Integrated Simulations (including Real-Time/SiL/HiL)

Contact name Daniel Schimmel
Typical duration 1
Email for more information d.schimmel@gtisoft.com

This course will cover the creation of Fast Running Engine Models (FRMs) from their detailed equivalent, so they can be used in a variety of integrated simulations.  FRMs execute much more rapidly than the typical detailed GT-POWER engine model, and are ideal for integrating with other vehicle systems where an accurate and predictive engine plant model is desired and where computational speed is critical.  FRMs adapt to changing conditions (e.g. valve timing, spark/injection timing, turbo lag, external temperature, altitude, cooling system conditions, etc.) without the need to apply non-physical correction factors.  Whether studying changes to ambient conditions, or simulating events that are heavily transient in nature, FRMs will maintain the predictive capabilities of a detailed engine model while allowing for the fast computational speeds that are expected when performing drive cycle analysis and other transient-focused simulations.

Some examples of applications that are ideal for FRMs are:

  • ECU Modeling (including HiL) – where a fast-running and transient-capable engine model is essential for optimizing ECU strategy
  • Engine + Drivetrain/Vehicle – where accurate torque pulsations are key for optimizing drivetrain design and strategy
  • Vehicle Thermal Management modeling, where the engine provides the heat to the cooling system, and the cooling system behavior feeds back into the engine performance predictions (great for simulating off-ambient conditions)
  • And many more.

In addition to covering the complete conversion process of going from a detailed engine model into an FRM, this class will also cover special considerations that may come up depending on the intended use of the FRM.  An agenda of this class is below:

  1. Brief introductions to FRMs and their applications
  2. Converting a Detailed GT-POWER model into an FRM
    1. Reviewing the baseline detailed model
    2. Simplifying each subsystem of the detailed model
    3. Additional modifications for achieving even faster run times
  3. Discussion of application-specific considerations when making an FRM
    1. Real-Time and Hardware-in-the-Loop modeling
    2. Engine Cooling and Heat Rejection
    3. Aftertreatment modeling
  4. Discussion of Transient Simulations using GT-SUITE (including Controls)