CLUTCH: FUNCTION, COMPONENTS, WORKING PRINCIPLE AND TYPE
The clutch is a mechanical device, which is used to connect a driving shaft to driven shaft so that they can be engaged and disengaged at the will of the operator. They used to start and stop a part of a system without stopping remaining parts of the power transmission system. They are used mostly in automobiles. The clutch allows to insert a gear system (gearbox) between engine and wheels, facilitate gear changing when the engine is running. Other applications of clutch: Torque limiting clutch in the electric screwdriver, bicycles pedal ratcheting.
Function of the Clutch :
- Function of transmitting the torque from the engine to the drivetrain.ý
- Smoothly deliver the power from the engine to enable smooth vehicle movement.
- Perform quietly and to reduce drive-related vibration.
- Protect the drivetrain when given the inappropriate use. Given the situation, the Exedy clutch will fail when giventhe inappropriate use inturn to protect the rest of the drivetrain, similar to the function of an electric fuse.
Requirements of a good clutch :
- The clutch should be able to transmit 1.25 to 1.50 times the maximum engine torque.
- The clutch material should have good coefficient of function.
- Lot of heat is generated due to the relative motion between the flywheel, pressure plate and clutch plate during clutch operation. This heat needs to be quickly dissipated, otherwise high temperature can damage clutch components.
- The clutch should have low moment of inertia, otherwise the clutch will keep spinning at high speed even during gear changing.
- Vibration and Jerk absorption. The clutch should be able to take up sudden jerks encountered when the clutch plate comes in contact with the rotating flywheel.
- The clutch should be dynamically balanced or it will lead to vibrations at high speeds.
- The operation of the clutch pedal should be easy for the operator and not tiresome, especially for operating
