How does the clutch work, what types are there, and what should you pay attention to in order to avoid costly repairs?

How does a clutch work in a car?

The clutch connects the engine to the gearbox and allows the driver to temporarily disconnect the drivetrain when changing gears. This allows us to change gears smoothly, without jerking or damaging the gearbox. The basic operating mechanism of a clutch is as follows:

  • Pressing the clutch pedal – disconnects the clutch disc from the engine flywheel, temporarily interrupting the transmission of torque.
  • Changing gear – once the clutch is disengaged, it is possible to safely change the gear ratio in the gearbox.
  • Releasing the clutch pedal – restores the connection between the engine and the gearbox, once again transmitting power to the driven wheels.
  • The clutch must operate precisely and without delay to ensure a smooth ride and extend the service life of the drivetrain.

Types of clutches in cars

Several different types of clutches can be found on the automotive market, differing in design and operation. For example, a dry single-plate clutch is the most commonly used type of clutch in passenger cars with a manual gearbox. It consists of a clutch disc, pressure plate and release bearing. This is a simple design that facilitates servicing and replacement, and is also inexpensive to repair.

There is also a dual-plate clutch, used mainly in high-powered cars and commercial vehicles where the transmission of greater torque is required. This clutch has a larger contact surface, ensuring better performance, and is also more resistant to overloads, but it is more expensive.

When we talk about cars with automatic gearboxes, a torque converter clutch is used. Instead of a friction disc, it uses circulating hydraulic fluid to transmit torque. It ensures a smooth ride without jerking and, naturally, does not require manual operation. In the event of a failure, however, it is more expensive to repair or replace.

There is also an electromagnetic clutch. It is used in some modern vehicles and in start-stop systems. Instead of a traditional friction disc, it uses electromagnets to engage and disengage the drivetrain. It is precise and fast, and can be controlled electronically.

How should you care for the clutch so that it lasts as long as possible?

To avoid premature clutch wear, above all, avoid driving with the clutch partially engaged – keeping your foot on the clutch pedal for a long time causes excessive wear. Equally importantly, do not rest your foot on the clutch while driving, as this leads to unnecessary wear of the clutch disc. Also, do not overload the vehicle, as a heavily loaded car increases the load on the clutch. Finally, inspect the clutch system regularly. If you notice any worrying symptoms, it is worth visiting a mechanic as soon as possible.