The document defines and describes the main parts of a clutch, which is a mechanical device that engages and disengages the power transmission system between the driving and driven shafts, usually between the engine and transmission. The main parts are the driving member, driven member, and operating member. It then describes the types of clutches, focusing on friction clutches. Friction clutches work by friction between two or more contacting surfaces and are classified as single plate or multi-plate clutches. A single plate clutch uses one clutch plate and is most common in automobiles, while a multi-plate clutch has multiple interleaved driving and driven plates and is used when large torques need to be transmitted.

1. CLUTCH
Prepared by
D.MAHARAJA
III-YEAR
AUTOMOBILE
1

2. DEFINITION:
CLUTCH IS THE
MECHANICAL DEVICE
WHICH IS USED TO ENGAGE
OR DISENGAGE THE POWER
TRANSMISSION SYSTEM.
ESPECIALLY FROM DRIVING
SHAFT TO DRIVEN SHAFT.

3. MAIN PARTS OF CLUTCH
It consist of
Driving member
Driven member
Operating member
I. Driving member has a flywheel which is mounted on the engine crankshaft. A
disc is bolted to flywheel which is known as pressure plate or driving disc
II. The driven member is a disc called clutch plate. This plate can slide freely to
on the clutch shaft.
III. The operating member consists of a pedal or lever which can be pressed to
disengaged the driving and driven plate.

4. TYPES OF CLUTCH
 FRICITION CLUTCH
 CENTRIFUGAL CLUTCH
 SEMI-CENTRIFUGAL CLUTCH
 CONICAL SPRING CLUTCH
 HYDRALIC CLUTCH
 ELECTROMAGNATIC CLUTCH
 VACCUM CLUTCH
 OVER RUNNING CLUTCH
 DOG AND SPLINE CLUTCH

5. FRICITIONAL CLUTCH
FRICITIONAL CLITCES WORK ON THE BASIS OF THE FRICITIONAL
FORCES DEVELOPED BETWEEN THE TWO OR MORE SUFACES
CONTACT.FRICITIONAL CLUTCH ARE THE JAW CLUTCHES DUE TO THEIR
BETTER PERFORMACE. THERE IS A SLIP IN A FRICITON CLUTCH.
IT CLASSIFIED INTO TWO WAYS, THERE ARE,
1. SINGLE PLATE CLUTCH
2. MULTI PLATE CLUTCH

6. SINGLE PLATE CLUTCH
IT IS MOST COMMON TYPE OF CLUTCH IS USED IN
THE AUTMOBILE . THUS IS HAVING ONLY ONE CLUTCH
PLATEWITH COMMBINATONS OF PRESSUE PLATES
TORSIONAL SPRING AND A FLYWHELL MOUNT
MATERIAL USED:
1. COMPOUND ORGANIC RESIN,
2. COPPER WIRE
3. ASBESTOS
4. CERAMIC MATERIAL(for heavy usage)

7. MULTIPLATE CLUTCH
• THIS TYPE OF CLUTCH HAS SEVERAL
DRIVING MEMBERS INTERLEAEVED OR
STACKED WITH SEVERAL DRIVEN
MEMBERS. IT IS HAVING A NUMER OF
CLUTCH PLATES.
• MULTIPLATE CLUTCH IS USED WHEN
LARGE TORQUEIS TO BE TRANSMITTED.
ALSO ITS USED WHEN THE COMPACT
CONSTRACTIOM IS REQUIRED.

8. CENTRIFUGAL CLUTCH
• THIS SYSTEM EMPLOYS
CENTRIFUGAL FORCE TO
AYTOMATCALLY ENGAGE
THE CLUTCH WHEN THE
ENGINR RPM IS RISES ABOVE
A THRESHOLD AND TO
AUTOMATICALLY
DISENGAGE THE CLUTCH
WHEN THE ENGINE RPM IS
FALLS LOW

9. 2D DIAGRAM
CENTRIFUGAL CLUTCH

10. SIMULATION OF CLUTCH

11. APPLICATION:
• SINGLE PLATE CLUTCH
 HEAVY VEHICLES AND COMMERCIAL LMV
• MULTIPLATE PLATE CLUTCH
 TWO WHELLERS AND SPORTS CARS
• CENTRIFUGAL CLUTCH
 AUTOMATIC CLUTCH ENABLED VEHICLES
 SCOOTER

12. REFERENCE:
• Automobile engineering Voloume 1-Kirbal singh
• Figures from Google and Wikipedia
• Automotive mechanic