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GT-Fuel

GT-Fuel is a general purpose hydraulics simulation. Well- suited for injection systems, GT-Fuel is applicable to a wide variety of injection configurations. Its solver is based on the solution of the fully compressible 1-D Navier-Stokes equations, including effects of entrained gas within the liquid and pressure wave-induced cavitation. GT-Fuel is applicable to deisel and gasoline fuel injection systems and both rail and unit pump systems. Sophisticated assemblies are built into GT-Fuel's object library to model complex hydraulic components such as injectors, dampers, snub valves and cam-driven pumps. Detailed modeling of the fluid and mechanical elements and their interactions enable GT-Fuel to make accurate and realistic predictions of system performance for injection systems.

GT-Fuel features a versatile library of hydraulic elements. This extends applicability to other automotive hydraulic systems such as braking, power steering and web clutches, as well as general hydraulics simulation.

Advanced Features:
• Preassembled (compound) objects of major components
   - in-line injection pump
   - delivery valve, snubber valve
   - injector (typical model shown below)
• Additional complex components can be easily built using flow, mechanical and   control objects
• Coupled to STAR-CD for detailed 3-D analysis
•Coupled to Simulink and MATRIXx for control system analysis  
                 

Solution Methodology:
• Coupled one-dimensional compressible flow dynamics and two-dimensional    multi-body dynamics
• Cavitation/vapor bubble transport model
• Captures effects of entrained (dissolved) gas
• Coupled aero-elastic solution with thick shell model of dynamic pipe wall   displacement  
                

Applications:
• Steady state and transient analysis
• Common rail and pump-line-nozzle systems
• High (DI diesel) and low (gasoline) pressure systems
• Identification of system resonances and mode shapes
• Dynamic characteristics of injector, delivery valves, etc.