Hydraulic and Injection Components and Systems Modeling

Contact name Mr. Shawn Harnish
Typical duration 2 days
Email for more information s.harnish@gtisoft.com

This course will introduce engineers to modeling fuel injection and hydraulic components as well as complete hydraulic systems in GT-SUITE.  This includes, but is not limited to, the following:

  • Pumps and valves (control valves, pressure regulators, etc.)
  • Fuel injection components (high-pressure pumps, injectors, regulating valves, etc.)
  • Variable valvetrains with hydraulic actuation
  • Cam phasers
  • Compression release brakes with hydraulic actuation
  • Exhaust valve control for large 2-stroke engines=Gearbox/transmission hydraulic actuation

The class will include discussion of detailed, predictive component models in which the fluid-mechanical interaction is important.  Most of the instruction will be based on interactive model building, but may also include demonstrations from the instructor and guided examination/analysis of pre-built models.  Below is a list of common topics that can be prioritized based on the audience.

  1. Modeling the flow network: build a model of the flow network by two methods.  First, the participant will learn how to build flow components manually to understand basic modeling and discretization concepts.  Second, a 3D CAD file will be quickly and easily transformed in to a 1D flow network model using the GT-SUITE pre-processor, GEM3D.
  2. Modeling hydraulic and injection components: create detailed, predictive models of hydraulic components in which the fluid-mechanical interaction is important.  Examples of the components to be discussed include high pressure pumps, pressure control valves, injectors, etc.
  3. Modeling pumps: discussion of different levels of models as well as the different types of pumps.  Pressure pulsation and flow ripple predictions will also be analyzed.
  4. Modeling a hydraulic system: build a model of the full system.  Various levels of detail for modeling the hydraulic components (pumps, valves, etc.) will be discussed, ranging from imposing the behavior to predicting it.  Pressure waves in the system as well as thermal effects in a closed-loop circuit will be analyzed.
  5. Integration of hydraulics with 2D and 3D multi-body dynamics: link hydraulics to 2D and 3D mechanical components.  Typical applications include detailed (2D) spring modeling, detailed dynamics of pumps including cam to follower tribology, cam shaft torsion and bending, mobile hydraulic equipment, etc.
  6. Injection rate modeling for predictive combustion: various options for modeling the injection rate needed for predictive combustion models.  This ranges from imposing the injection rate to integrating a detailed injector in the engine performance model.
  7. General GT-SUITE topics: In addition to the above topics, this course will also discuss some of the general features in GT-SUITE, including:
    • Solver options (explicit vs. implicit)
    • Fluid properties
    • Cavitation and aeration
    • Model Setup- initialization, parameters sweeps, convergence
    • Optimization and DOE
    • Simulink co-simulation
    • User-created compound templates
    • User routines

Note:  This course may be offered as a future open registration event OR requested as a custom training at a GTI office location or your location.