A friction-based mechanical coupling device located between the engine flywheel and the transmission input shaft. It allows the driver to interrupt power flow to the wheels for gear changes or stopping without stalling the engine. The complete assembly typically includes a friction disc, a pressure plate, and a release bearing.
You can smell the burnt friction material as soon as you get near it, so this clutch is definitely toasted.
Riding the pedal even slightly while driving keeps the release bearing engaged and causes premature wear on the friction disc.
Also heard as
- clutch assembly
Do not mix it up with
- Torque converter: A torque converter transfers power using fluid dynamics in an automatic transmission, while a clutch uses mechanical friction in a manual.
Related terms
Clutch pedal
The floor-mounted control operated by the driver to engage or disengage the clutch.
Manual transmission
A gearbox requiring the driver to manually select gear ratios using a shift lever and a clutch.
Torque converter
A fluid coupling that transfers rotating power from the engine to an automatic transmission.
Double-declutch
A manual shifting technique where the clutch is engaged in neutral between gears to match transmission speeds.