MULTIPLATE CLUTCH

     

     
            Mutiplate clutch is mostly used in 2-wheelers, heavy
vehicles and sport cars. It is similar to the single plate
clutch but only the difference is this that it has more number
of frictional and metal plates. The need of multiplate clutch
arises due to space limitation such as in 2-wheelers or
requirement of high torque transmission as in race cars and
some heavy vehicles.

             It consists of two sets of plates. One set of plates
on splines of the pressure plate while the other set slides in
the grooves on the flywheel. The both types of plates are
arranged in alternate manner one on the pressure plate and
other one on the flywheel and so on. The plates fitted in the
flywheel having outer teeth and are made of steel. The plates
fitted on the pressure plate having inner teeth and usually
made of phosphor bronze. They are firmly pressed together by
coil springs.

Single Plate Clutch

     Single plate clutch is most common type of clutch used in motor vehicles. It has only one clutch plate mounted on the splines of the clutch shft. It acts as driven member.

       The driving member consists of a flywheel mounted on the crankshaft and rotate with it. The pressure plate is botted to the flywheel through clutch springs, and is free to slide on the clutch shaft when the clutch pedal is operated.

        The operating members consists of a clutch pedal, linkage, release bearing, release levers and the pressure springs necessary to insure the proper operations of the clutch.

WORKING:

        When the clutch is engaged, the pressure springs press the pressure plate on to the fricyion plate. While the engine is running, the friction plate rotates the clutch shaft. Thus a connection is made between the engine and gear box.

        When the clutch pedal is pressed, the pressure plate moves back against the force of the springs, and the clutch plate becomes free between flywheel and pressure plate. Thus the flywheel remains rotating as long as the engine is running and clutch shaft speed reduces slowly and finally its stops rotating. The engine is now disengaged from the transmission system.

CLUTCHES

    Clutch is a device used in the transmission system of a motor vehicle to engage and disengage the engine to the gearbox. It is fitted between the engine and gearbox.

    When the clutch is engaged, the power flows from the engine to the rear wheels through the transmission system and vehicle moves.

     When the clutch disengaged, the power is not transmitted to the rear wheels and the vehicle stops while the engine is still running.

 REQUIREMENTS OF A CLUTCH:

1)Torque Transmission
2)Gradual Engagement
3)Heat Dissipation
4)Dynamic Balancing
5)Vibration Damping
6)Size
7)Free Pedal Play
8)Easy in Operation
9)Lightness

TYPES OF CLUTCHES:

• Positive clutch
• Dog clutch
• Gradual Engagement clutch
• Friction clutch
• Fluid flywheel clutch
• Single Plate clutch
• Multi Plate clutch
• Centrifugal clutch
• Semi Centrifugal clutch
• Cone clutch
• Hydraulic clutch
• Helical Spring clutch
• Diaphram Spring clutch
• Wet clutch
• Dry clutch.

Functions of Automobile Components

ENGINE:

     The propolling force required to run an automobile coms from a engine which can be a petrol engine or diesel engine or others.

 SUSPENSION SYSTEM:

       This system is used to prevent the road shocks to the various vehicle components and the occupants and to preserve stability under various road conditions. Major components of this system are springs and shock absorbers. Springs initiate vibration in the whole vehicle during impact of road, and this vibration is damped down by shock absorbers.



AXLES:

     These are fitted at  the front and rear of the vehicle by means of spring assemblies. It is used to carry weight of the front end of the vehicle and steer the vehicle.

 WHEELS AND TYRES:

    The wheels support the whole load and weight of the vehicle and also absorb the road shock. Rear wheels transmit the power and the front wheels steer the vehicle.



 

FUNCTIONS OF AUTOMOBILE COMPONENTS

CHASSIS:

                        The chassis is a complete combination of various systems and components that enable it to run on the road. It is in fact an auto vehicle without the body.

BODY:

       When frameless construction is not done in the vehicle then separate body is used on the frame which is known as "SUPER STRUCTURE OR BODY". In this part of the vehicle passangers ride and protected from atmospheric effects.

FRAME:

                It is the main structural components which supports all the chassis system and the body. It is made up of two long side members riveted together with the help of several cross members.

Automobile Introduction

                 

                  An AUTOMOBILE is a self propelled vehicle. The power requires to propell the vehicle is supplied by an engine also called prime mover. The vehicle transports men and goods from one place to the other over the ground. Cars, Scooters, Bikes, Trucks are the different types of automotive vehicles.

           An automobiles is generally made up of the following components:
1)Chasis
2)Body
3)Engine
4)basis Structure
  a)Frame
  b)suspension System
  c)Axles
  d)Wheels&Tyres
5)Driving System
  a)Clutch
  b)Transmission
  c)Propeller Shaft
  d)Differential
  e)Rear Axle
6)Control System
  a)Steering System
  b)Brake System
7)Auxillaries
  a)Starting System
  b)Charging System
  c)Lighting System
  d)Wiring System