Friction clutch - Single plate friction clutch

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A single plate clutch has one clutch plate. This clutch works on the principle of friction. It is the most common type of clutch used in motor vehicles. The clutch primarily consists of two members, one mounted on the driving shaft and the other on the driven shaft.

Construction Of Single Plate Clutch:

A single plate clutch consists of different parts for proper working. They are arranged in a systematic order. Mainly it consists of a clutch plate with both side friction lining and some other parts which help in the proper functioning of a clutch like a flywheel, pressure plate, thrust bearing, hub, springs, and input mechanism for engagement and disengagement of the clutch. The clutch plate attaches to the hub between the flywheel and the pressure plate, it moves axially on the driven shaft. In a single plate clutch, the clutch plate should have both side friction lining because it mounts between the pressure plate and flywheel, friction is responsible for the torque transmission. The pressure plate engages with the flywheel and springs. Pressure plate helps to push the clutch plate with the flywheel. A lever attaches to thrust bearings with some mechanism on the driven shaft which transmits input and output motion from the clutch pedal

Parts Of Single Plate Clutch:

A single plate clutch assembly for transmission of power consists of a flywheel, a clutch plate, pressure plate, clutch covers, release levers, primary or clutch shaft.

Flywheel

The flywheel is an integral part of the engine, which also use as a part of the clutch. It is a driving member and connects to the pressure plate of the clutch shaft is houses with bearings in a flywheel. The flywheel rotates as the engine crankshaft rotates.

Pilot Bearing (Pressure release bearing)

The pilot bearing or bushing press into the end of the crankshaft to support the end of the transmission input shaft. The pilot bearing prevents the transmission shaft and clutch disc from wobbling up and down when the clutch releases. It also assists the input shaft centre of the disc on the flywheel.

Clutch plate or Disc plate

It is the driven member of the single-plate clutch and line with friction material on both surfaces. It has a central hub with internal splines to limit the axial travel along the splined gearbox driving shaft. This helps to provide damping actions against torsional vibrations or variations of the driving torque between engine and transmission. A clutch disc is a plate between flywheel and friction or pressure plate. It has a series of facings inverters on each side to enlarge the friction. These clutch facings are made of asbestos material. They are highly worn and heat resistant.

Pressure plate

The pressure plate is made of special cast iron. It is the heaviest part of the clutch assembly. The main function of the pressure plate is to establish even contact with the driven plate facing through which the pressure springs can exert a sufficient force to transmit the full torque of the engine. The pressure plate presses the clutch plate on to the flywheel from its machined surface. Between the pressure plate and clutch cover assembly, pressure springs are fitted. The pressure will be withdrawn from the flywheel whenever release levers are depressed by the toggle or release levers are pivoted accordingly.

Clutch cover

The clutch cover assembly bolts to the flywheel. It consists of a pressure plate, release lever mechanism, clutch cover, and pressure springs. Generally, the clutch plate revolves with the flywheel. However, when the clutch has disengaged, the flywheel, as well as the pressure plates, are free to rotate independently from the driven plate and driving shaft.

Release levers

These pivots on pins to the clutch cover, their outer ends locate and positions on pressure plate legs, and the inner ends are projecting towards the clutch shaft. A careful and accurate adjustment of the release mechanism is one of the most important factors governing the performance of a clutch assembly.

Clutch shaft.

It is a component of the gearbox. Since it is a splined shaft to the hub of the clutch plate, which is sliding on it. One end of the clutch shaft attaches to the crankshaft or flywheel and the other end connects to the gearbox or forms a part of the gearbox

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