A hydrodynamic coupling device includes a hydrodynamic circuit having at least an impeller wheel and a turbine wheel and {HEAD ~ a lockup clutch} having an axially movable piston and {TAIL ~ a torsional vibration damper} 
having
A hydrodynamic coupling device includes a hydrodynamic circuit having at least an impeller wheel and a turbine wheel and { HEAD ~ a lockup clutch } having an axially movable piston and { TAIL ~ a torsional vibration damper }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL