The clutch driven plate assembly is used to transmit the engine's power to the transmission via frictional rotation.

The clutch assembly primarily consists of the driven disc assembly and the clutch cover assembly. At the heart of the driven disc assembly is the friction plate, while the clutch cover houses the diaphragm spring—its most critical component. Unlike the coil springs typically found in conventional shock absorbers, the diaphragm spring operates differently. When the clutch pedal is released, the master cylinder loses pressure, relieving the push on the slave cylinder. As a result, the diaphragm spring, thanks to its inherent elasticity, firmly presses the clutch’s friction disc against the engine’s flywheel. This action ensures that the engine’s power is efficiently transferred—from the flywheel and friction disc—to the friction plate. Finally, the friction plate, via its splines, connects directly to the input shaft of the transmission, enabling the engine’s power to be smoothly delivered through the clutch and gearbox all the way to the vehicle’s wheels.

When we press the clutch pedal, the hydraulic actuator transmits force to the release bearing, which pushes the diaphragm spring inward. As the pressure builds, the portion of the diaphragm spring closer to the center moves inward, while the outer edges lift upward. Since the diaphragm spring is rigidly connected around its circumference to the friction plate, this causes the friction plate to disengage from the flywheel—effectively cutting off power transmission from the engine to the gearbox.