How does the clutch system work? 

What is the purpose of the clutch?

The clutch plays a major role for your vehicle. Without it, you won't get anywhere! It provides the between the drive shaft and the wheels. On a manual gearboxwhen your left foot presses down on the clutch pedal, you temporarily uncouple the engine from the transmission to change gear or stop without stalling. In the clutch position, you re-establish this connection.

A automatic gearbox uses a torque converter to perform this role. This device ensures smooth, continuous power transmission between the engine and gearbox. Double-clutch double-clutchsystems offer a sportier driving experience. Two clutches act alternately for faster, almost imperceptible gear changes.

The main components of the clutch system

The clutch mechanism is made up of several key components key componentseach playing a specific role in its operation:

• The clutch pedal This is the rallying point that controls actuation of the mechanism;
• The clutch disc located between the flywheel and the pressure plate, transmits torque from the engine to the gearbox;
• The pressure plate The pressure plate: presses the disc against the flywheel when the clutch pedal is released;
• The flywheel (or flywheel): attached to the crankshaft, it rotates continuously when the engine is running;
• The clutch release bearing actuated by the clutch fork systemit presses on the pressure plate diaphragm to disengage the clutch;
• The actuation mechanism This transforms pedal pressure into movement by connecting it to the clutch fork via a cable or hydraulic system.

Understanding the clutch mechanism 

Operation is essentially based on the principle of friction friction. When two surfaces are pressed together with sufficient force, they rotate together without slipping.

In engaged position 

The diaphragm, still under tension, pushes the pressure plate against the clutch disc, which is compressed against the flywheel. Friction is now sufficient for these three three elements to rotate as a unitconnecting the engine to the gearbox.

In disengaged position 

The clutch release bearing pushes on the center of the diaphragm, deforming its curvature to release pressure from the plate. The disc then rotates freelydisconnecting the motor from the gearbox.

Gradual engagement (gradual release of pedal)

As the pedal is released, the pressure plate regains contact with the disc. This increasing friction ensures smooth power transmission. This grip phase is crucial for a smooth start.

What are the different types of clutch?

The choice of clutch is a balance between performance, cost, comfort and market expectations. Here are the main features.

Mechanical and hydraulic clutches 

The mechanical clutch uses a cable to operate the clutch release mechanism. It is simple, but may require regular adjustment. Its hydraulic counterpart is based on a pressurized fluid system (often brake fluid), offering greater comfort and less susceptibility to wear.

Single-plate and dual-plate clutches 

The single-plate clutch is the the most common in passenger cars because of its robustness and simplicity. The dual mass clutch has a spring action thanks to a two-part flywheel which absorbs vibrations. However, its complexity makes it expensive and demanding to maintain.

What is the average life of a clutch?

On average, a clutch can last between 100,000 and 200,000 km. The only real enemy of this part is wear and tear and its lifespan depends on many factors:

• Driving style;
• Type of journey ;
• Vehicle loading or frequent towing ;
• Component quality ;
• Regular vehicle maintenance.

For maximize clutch lifeTo maximize clutch life, drive smoothly, keep your foot off the clutch pedal when not required, and have the system checked regularly by a professional.

How to detect the signs of a faulty clutch?

It is not uncommon to confuse clutch failure with gearbox failure, because certain signs of wear cause the same symptoms:

• Skating ;
• Difficulty shifting gears or jerking to start ; 
• Abnormally soft clutch pedal ;
• Abnormal noises ;
• Burnt smell ;
• Vibrations.

In the event of a problem, you can check the condition of the cable or the oil level in the clutch fluid reservoir. But only a specialized technician can determine the source of the fault with certainty, by checking all the transmission components.

A defective clutch can lead to premature premature wear of the transmissionsometimes leading to irreversible damage. If the diagnosis of your vehicle leads you to purchase a exchange gearbox, EDEN BOITES is your solution! We have one of the largest stocks in Europe, covering all makes and types of of transmissions.

Contact us and benefit from our guarantee and fast service!