Description And Operation: Description: Flywheel
The Dual Mass Flywheel is used on all engines. The flywheel incorporates the ring gear (5) around the outer circumference to mesh with the starter to permit engine cranking. The primary flywheel (6) side is bolted to the crankshaft. The secondary flywheel (3) side serves as the driving member to the clutch disc. Internal springs (4) between the flywheels are use to dampen energy. The Dual Mass Flywheel is serviced as an assembly only and should never be taken apart.
The flywheel is bolted firmly to the crankshaft which transmits part of the engine torque to the clutch disc. The rest of the torque passes into the cover through the bolts holding the clutch to the flywheel. From there, the straps transfer it to the clutch pressure plate. The diaphragm spring clamps the pressure plate against the clutch disc to achieve positive lock-up with flywheel. The clutch disc transmits the entire engine torque to the transmission via splined connection to the transmission input shaft. When the driver depresses the clutch pedal, the release bearing actuate the diaphragm spring pivots on this fulcrum ring, so that the outside diameter moves away from the pressure plate. This causes the preloaded drive straps to pull the pressure plate away from the clutch disc, interrupting torque transmission. When the driver release pedal, the outer portion of the diaphragm springs acts on the pressure plate which clamps the clutch disc between the pressure plate and the flywheel.