Torsion coupling

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Torsional dampers are used between the engine and the transmission and between the transmission and the PTO shaft. The aim is to absorb torque peaks from the engines as well as uneven running of equipment. Every motor vehicle with powershift or continuously variable transmission today has a torsion damper, which, in simple terms, ensures "quiet in the vehicle". If the forces acting in the drive area were to be counteracted, not only would the driving comfort be noticeably restricted, the wear on the drive components would also increase significantly. There are torsional dampers that can handle an engine output of up to 700 hp.

installation

Where the dry clutch is in vehicles with conventional manual transmissions, modern vehicles with powershift transmissions or continuously variable transmissions have a torsion damper. Just like any automatic clutch, the torsional damper is flanged behind the flywheel. The screws are passed through the outer edge of the damper and screwed tight. Because this component is rigid towards the engine, it is also referred to as the secondary part. The gear shaft is guided through the rotatable inner part, the primary part. The external toothing fits into the opposite internal toothing, so that no play is possible.

function

A torsional vibration damper is essentially composed of an inner and an outer part, which are connected via the common housing and cannot be taken apart. The inner part can only twist against the outer part in the event of stress. However, so that a power transmission can take place, the possible angle of rotation is usually limited to 90 °. Above a certain torque, the outer part, which is firmly connected to the engine flywheel, must rotate the inner part with the toothed gear shaft. However, this does not happen indefinitely until it stops. Here, the springs and greases in the torsion damper are used beforehand, which largely neutralize any extreme, disruptive torque peaks from the engine and also the stimuli arising from the transmission and PTO-driven attachments and convert them into uniform movements.

The following components are used for damping: grease, helical and axial springs, bow and spiral springs, as well as silicone and oils with high viscosity.