Clutch and Double clutch transmission(DCT)

Clutch


 Bridges the gap between zero revolution wheel and non zero revolution of IC engine



Its a mechanical devices  that transmits power produced by the engine to the gear box by the frictional resistance of the rough surfaces of the flywheel and clutch lining(clutch plate).

The gear transmission is not possible at high rpm, it may create lot of noise and may cause failure in gears due to sudden impacts. Hence the clutch was introduced that can engage and disengage the transmission from engine


Main types of clutches

  • Dry clutch-Used in normal power engine vehicles it has no liquid fluid surrounded other than air
  • Wet clutch-This type of clutches are used for very high power engine vehicles as its immersed in a cooling lubricant that keeps surfaces clean and provides smoother performance and longer life

Main components of the clutch system









Working of the clutch


The Flywheel is connected to crankshaft of engine and the transmission is connected to clutch plate both having rough surfaces.  When the clutch plate is in touch with flywheel the torque is transmitting towards transmission by the action of friction this is called engagement of clutch


The pressure plate is bolted with the flywheel and at the center of diaphragm spring there is a special kind of bearing called throw-out bearing. The clutch disc is in between flywheel and pressure plate and shaft from clutch disc passes through throw-out or thrust bearing. This type of bearing slides on shaft towards the clutch disc and lifts the clutch plate from flywheel whenever the clutch pedal is pushed this is called clutch disengagement.The springs in the clutch plate absorb the sudden impact during the engagement


Double clutch transmission DCT


Modern technology of clutch



It has two clutch plates connected to two transmission shafts one for even gear and one for odd gears. when the vehicle is accelerating in one gear the other gear is already ready for acceleration. This gives the vehicle continues acceleration without the interference of gear shifting

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