INTRODUCTION - ENGINE FLYWHEEL

1.9 Multijet

CONSTRUCTION SPECIFICATIONS

Dual mass, DVA (dual mass vibration-damping flywheel), one mass integral with the crankshaft and the other on the gearbox mainshaft with an interposed flexible torsional damping system.

The resonance points which, on the conventional system (rigid flywheel and dampened disc) are found at between 800 and 2200 rpm, have been moved to lower rotation speeds, outside of the operation range, thereby allowing improved damping of torsional vibrations and a reduction in noise.

The clutch engagement mechanism, located between the dual flywheel and gearbox, consists of a rigid plate (unsprung) that improves gear manoeuvrability due to its reduced inertia.

1 - Crankshaft

2 - Mass in one piece with the crankshaft

3 - Mass in one piece with the gearbox main shaft

4 - Flexible torsion damping system

5 - Clutch plate

6 - Thrust spring

7 - Thrust bearing

8 - Gearbox main shaft

9 - Ring gear

1.2 8v

CONSTRUCTION SPECIFICATIONS

Made from cast iron with a steel ring gear.

The flywheel is fastened by means of a flange with bolts to the crankshaft.

OPERATION

It is the component that ensures that the engine rotation is even, accumulating energy during the active stages (expansions) and restoring it during the passive stages.

The flywheel is designed to allow the engine to idle without cutting out and overcome the friction developed whilst it is running in no load conditions.

1.3 Multijet · 75 CV

CONSTRUCTION SPECIFICATIONS

The engine flywheel is made from cast iron with a steel ring gear.

The flywheel is fastened by means of a flange with bolts to the crankshaft and there is a phonic wheel for the rpm sensor towards the engine side.

1 - Engine flywheel

2 - Toothed wheel

3 - Phonic wheel for rpm

OPERATION

The engine flywheel is the component that ensures that the engine rotation is even, accumulating energy during the active stages (expansions) and restoring it during the passive stages.

The flywheel is designed to allow the engine to idle without cutting out and overcome the friction developed whilst it is running in no load conditions.

1.3 Multijet · 90 CV

- Refer to

See descriptions 18 CLUTCH UNIT

1.4 8v

CONSTRUCTION SPECIFICATIONS

Made from cast iron with a steel ring gear.

The flywheel is fastened by means of a flange with bolts to the crankshaft.

The "flexible" type flywheel absorbs the axial vibrations that the crankshaft normally transmits to the gearbox main shaft by means of a disc (1).

The flexible disc (1) cannot be dismantled and is therefore supplied by the Parts Dept. together with the flywheel.

OPERATION

It is the component that ensures that the engine rotation is even, accumulating energy during the active stages (expansions) and restoring it during the passive stages.

The flywheel is designed to allow the engine to idle without cutting out and overcome the friction developed whilst it is running in no load conditions.