Wednesday, 15 March 2017

POWER TRANSMISSION IN AUTOMOBILES



Transmission System

In automobiles, the power developed by the engine is ultimately aimed to turn the wheels so that the vehicle  can move on the road

Power developed by the engine  will be transmitted to various components and finally turn the wheels

These components all together is known as transmission system
Components of transmission system

·           Clutch
·           Gear box (also called as Transmission)
·           Universal joints
·           Propeller shaft
·           Differential

Clutch
·                  It is located between engine and gear box
·                  It engages and disengages power from engine to gear box
·                  When engaged, power flows from engine to gear box
          and vehicle moves
·                  When disengaged, power does not flow and vehicle
      stops though the engine  is still in running condition

                              

Location of clutch


Gear Box

·                 It is located between clutch and propeller shaft
·                 It consists set of gears
·                 It Increases or decreases the engine speed/torque
·                 High torque is require when vehicle is pulling  more
    loads, climbing hill  and starting form rest

                                                                
Location of Gear box


                                           

Universal Joints

·                A universal joint makes flexible connection between two rigid shafts, which are at an angle and transmits power
·               There will be two universal joints in transmission system 
·               One universal joint is located between gear box  main shaft and propeller shaft
·                The other one is between other end of propeller shaft and the differential 


Location of Universal Joints
                                 

Propeller Shaft

·              It is located between gear box  and differential
·               Connected to them with a universal joint at each end
·               It transmits power from gear box to differential


Location of Propeller Shaft

                

Differential

·               It is located at the end of propeller shaft
·               It serves two purposes
1.Transmits power at right angle from the propeller shaft to the real axle
2.Provides relative motion to the rear wheels, when vehicle takes turn 


Location of Differential

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