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Single plate clutch is the most common type of clutch plate used in automobiles. It consists of only one clutch plate which is mounted on the splines of the clutch plate. The Flywheel is mounted on the engine crankshaft and rotates with it
What Is A Single Plate Clutch?
Single plate clutch is the most common type of clutch plate used in automobiles. It consists of only one clutch plate which is mounted on the splines of the clutch plate. The Flywheel is mounted on the engine crankshaft and rotates with it.

The clutch primarily consists of two members, one mounted on the driving shaft and the other on the driven shaft.

These two shafts are parallel and concentric with each other; one shaft is fixed to its housing while the other is splined so that it can move axially. The driving torque can increase by increasing the effective radius of contact.

Working Of Single Plate Clutch
When the engine is running and therefore the flywheel is rotating, the pressure plate also rotates because the pressure plate attaches to the flywheel. The friction disc is located between the flywheel and the pressure plate. When the driving force has pushed down the clutch is released.

The pressure plate is bolted to the flywheel through clutch springs and is free to slide (Move) on the clutch shaft when the clutch pedal is operated (Engage and Disengage).

If Clutch Engaged
When the clutch is engaged (which Means when you not pressed the clutch pedal), the clutch plate is held between the flywheel and the pressure plate.
The friction linings are on both sides of the clutch plate. The clutch disc rotates the flywheel due to the friction between the flywheel, the clutch disc, and the pressure plate.
The clutch shaft also rotates with the clutch plate. The clutch shaft is connected to the gearbox. Now the engine power is transferred to the crankshaft and then to the clutch shaft and gearbox.
Clutch always engaged because of the spring forces.
If Clutch Disengaged
When the clutch is disengaged (which Means when you pressed the clutch pedal), the pressure plate moves back against the force of the springs, and the clutch plate is released between the flywheel and the pressure plate.
The flywheel always rotates with the crankshaft. Then the speed of the clutch shaft will slowly decrease and stop rotating.
Single Plate Clutch Diagram
Single plate clutch
Diagram of single plate clutch
Parts Of Single Plate Clutch
A single plate clutch assembly for transmission of power consists of a flywheel, a clutch plate, pressure plates, clutch covers, release levers, primary or clutch shaft.



Application Of Single Plate Clutch
Single plate clutch applications are as follows :


Single plate clutches are used in Buses, Trucks, and cars, etc.
Single plate clutches are used where large radial space is available.
This type of clutch does not require any lubricant for cooling.
As sufficient surface area is available for the heat dissipation in Single plate clutches, no cooling oil is required. Therefore, single plate clutches are dry type.
Due to the high coefficient of friction, most of the vehicles use a single plate clutch. The amount of the coefficient of friction is more than 0.3.
Advantages Of Single Plate Clutch
The main advantages of this clutch include:

Single plate clutch is smooth in operation i.e engagement and disengagement of clutch is smooth.
Very little slip occurs in its operation. Slip only occurs during the engagement of the clutch and after that, no slipping occurs and functioning becomes very smooth.
Power loss is very less.
Very little heat is generated as only one clutch plate is used.
The operation in this type of clutch is very fast.
Disadvantages Of Single Plate Clutch
The main disadvantages of this clutch include:

Single plate clutches have high wear and tear rate.
It has less torque transmitting capacity.
The springs have to be stiffer hence greater force requires to disengage.
It requires high maintenance.
The space required to accommodate the clutch is more as compared to the multi-plate clutch