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