Automobile :- Diaphragm Clutch
● This type of clutches quit advantages because it requires no release Lever and the spring itself act has a series of levers.
● Some of the conical spring used event are not having the constant rate characteristics.
● The pressure of spring is always Varying.
● It increases till the spring reaches to its flat position and decreases with the passing of this position.
● In case of this clutch, the driver has not to exert has high a padal pressure to hold the clutch out of engagement as in case of the coil spring type.
● In case of coil spring type of clutch, when the pedal is depressed to disengage the clutch, the spring pressure further increases.
● The spring is pirating on the rear Pivot rings in its engaged position while holding itself on the clutch cover.
● In this position the pressure plate is in contact with its outer Rim. Therefore, sufficient pressure is exerted by the spring making a firm contact between the pressure plate and clutch plate as well as the flywheel in this natural conical position.
● Now in order to engage the clutch, Padal is depressed.
● The thought out bearing is moved toward the flywheel by the linkage due to pedal depression.
● As the spring is pivoting on the front pivot ring therefore, the bearing contacting the inner portion of the conical spring moves that portion forward resulting the rim to move backward.
● The clutch disc gets released from the contact with both the driving members because the pressure on the pressure plate is removed.
● The release levers would move toward the withdrawal bearing and prevent the clutch from engaging fully due to wearing down of the friction lining.
● the prevent the clutch is slipping, a free movement of about 25 mm at the clutch pedal for 1.5 mm at the withdrawal bearing is provided
