Engineering Tutorials: Clutch Basics And Performance Clutches

Clutch Basics And Performance Clutches

Engineering Tutorials: Clutch Basics And Performance Clutches

We already wrote an article about the manual transmission. If you are one of these ‘real men’ that would never quit shifting the gears, then you should read this one. Engineering explained or in other words we are going to reveal you the clutch basics and how it works. It is everything behind the manual transmission. If you go for a ride or for a trip you are going to use it hundreds of times. For 90% of the people who use manual transmission there is still some mystery about the way it works.

Here we will try to cover four things related to it: 1. what is actually the clutch, 2. what is the purpose of the internal springs on the clutch discs, 3. performance clutch – what’s this and 4. why this performance clutch is needed. The clutch is the torque converter of manual cars – it’s the connection between the engine and the transmission. It is not just one part – clutch disc, flywheel, pressure plate and diaphragm spring. The clutch disc is positioned between the flywheel and the pressure plate. The flywheel is the surface through which torque is being transferred.

If you imagine a sandwich the flywheel would be the top part part, the clutch disc will be the middle, so the pressure plate is the other side of the sandwich. The pressure plate rotates with the engine and is bolted to the flywheel. Inside the pressure plate is the diaphragm spring – when the clutch pedal is depressed, this spring removes the pressure from the clutch disc. The retaining plate of the clutch disc contains springs – these are used to smoothen out the engagement of the clutch disc and the engine RPMs.


See also:
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In theory, this is similar to a dual mass flywheel with the only difference that the dual one reduces the vibrations before they get the clutch disc. The performance clutches are made of different materials and use heavier springs. That’s basically the difference. The performance clutches are used when more torque should be transmitted without the clutch slipping. When you say aggresive driving this is related to very high temperatures…


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