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 GT-Crank is an engine dynamics analysis and crank-shaft design tool with the following engine engineering functions:
• Rigid Crankshaft Dynamics
• Unbalanced engine (shaking) forces and moments
• Dynamic analysis of block/tranmission vibration as a rigid
  body; with engine   mounts; engine mounting system
  analysis and design
• Torsional dynamics of crankshaft, including modal analysis   (version 6.0 Spring of 2002)
• Connecting rod and main bearing oil film hydrodynamic   analysis, bearing oil film   thicknesses and orbits  



        GT-Crank model of 4-cylinder           engine  cranktrain, block and           mounting system  

General Capabilities:
• Steady-state or transient analysis
• 2- or 4-stroke
• In-line or V-engines
• Single or split throws
• Left- or right-handed stagger in V-engines
• Piston pin, crank and rod axial offsets
• Individual cylinders can have different   attributes   

Rigid Cranktrain Dynamics:  • Prediction of piston motions
 • Crankpin and piston pin (side)    forces
 • Connecting rod and main bearing    loads
 • Crankshaft internal torques and    engine output torque
 • Effect of all masses, geometry  

                 
                                  Schematic of crankshaft geometry  

Engine Block Vibrations/Mounting System:
• Accounts for: Mount locations and direction, mount stiffness/damping   characteristics
• 6-d.o.f model of block excited by unbalanced forces/moments
• Motions and forces at CG, and at mounts
• Road excitation at mounts
• Block motion frequencies and mode shapes  
                      
         Block vibrations: Displacement reported at blocks and mounts

 

 

 

 

 

Engine Balance
• Unbalanced (engine recoil) torque
• Unbalanced forces and moments - Fx, Fy,    Mx, My
• Balance shafts with one or multiple   balancing weights
• Unbalanced force-moment order analysis
• Solutions are exact (higher orders, no   approximations)

 

 

 

 

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