Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

Technical requirements:

Higher torque levels

Higher ignition pressures

Stricter emission controls

Greater requirements for comfort and noise control

Protection of gearbox and vibration-sensitive vehicle components

Dual Mass Flywheel DMFTechnology at a glance

all require extremely high-performance torsional dampers

Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

spring tuning parameters

primary flywheel

secondary flywheel

planet wheel

Dual Mass Flywheel (DMF)

Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

RPM Fluctuationengine

RPM Fluctuationtransmission

Time

Engine Transmission

Time

Vibration damping

Conventional Powertrain

Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

Engine Transmission

RPM Fluctuationengine

RPM Fluctuationtransmission

Vibration damping

Time Time

Powertrain with Sachs Planetary DMF

Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

Torsion damper set Sachs(tensionless state)

Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

Torsion damper set Sachs(first grade stopper)

Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

Torsion damper set Sachs(second grade stopper)

Powertrain Waldemar Schulz / TFQ-1ZF Trading GmbH

Second stage

First stage

Torsion angle (°)

To

rqu

e (

Nm

)

Second stageFirst stage

The spring pans and sliding shoes are there to avoid blockade of the springs and with it the damage; at the same time sliding friction is acting as a damping.

Dual Mass Flywheel DMF Torsion damper set Sachs