GT-Vtrain is capable of modeling all modern, standard valvetrain configurations, including pushrod, cam-in-head, end pivot and center pivot OHC, and direct attack. GT-Vtrain offers a library of dynamics/hydraulics primitives, as well as pre-programmed sub-assemblies, or compound objects, for standard valvetrain components (e.g. rocker arm, poppet valve, hydraulic lash adjuster, etc.). Use of compound objects reduces modeling effort and can also be combined with dynamics primitives, further extending the range of GT-Vtrain to non-standard valvetrain configurations. As
a result, GT-Vtrain combines the simplicity of a dedicated valvetrain analysis tool with the flexibility of general purpose multi-boy dynamics software.
       

General Capabilities:
• Single or multiple cam lobes
• Solid and hydraulic lifter
• Flat or roller followers
• Single or dual valve springs (mechanical or gas)
• Spring surge & spring coil clash
• Effect of cylinder and port pressures
• Effect of component thermal expansion
• Multi-cycle simulation
• Frictional forces/power losses
• Output of all component displacements, velocities, accelerations, forces, torques and   deformations
• Bearing orbits, film thickness
• Seating velocity
• Includes graphical cam design tool