What is the difference between dry dual clutch and wet dual clutch?

I don’t know what dual clutch means, so naturally I don’t understand wet and dry. But don't worry, it's not that mysterious. Let's take a look. Let’s talk about the clutch first

Anyone who has learned to drive should know the clutch. The clutch we usually refer to refers to the clutch on the manual transmission, which is actually a very limited statement. Clutches are widely used in machine tools, various machines, cars, and motorcycles. Just slightly different in structure. The clutch is a device that controls the separation and combination of power. The manual clutch, the torque converter of the AT gearbox and the clutch of the dual-clutch gearbox are all types of clutches. Can control the power switch between engine and transmission. Common clutches on cars

The first is the clutch of the manual transmission.

The above picture is the structural diagram of a manual clutch, which consists of a flywheel, a clutch plate and a pressure plate from left to right. The pressure plate is connected to the engine crankshaft and bolted to the flywheel. The clutch plates are tightly sandwiched between them. When the engine is running, the flywheel and pressure plate rotate, driving the clutch plate to rotate together through friction. The input shaft of the gearbox is inserted between the clutch plates to transmit the engine power to the gearbox. When we depress the clutch pedal, the drive mechanism pushes the diaphragm spring of the pressure plate to release the pressure on the clutch plate, thereby cutting off power. If you depress the clutch pedal halfway, it is semi-coupled. Multi-plate clutch

Multi-plate clutches are also widely used and can be seen in motorcycles, machine tools, and automatic transmissions. Essentially, it also relies on the friction force generated by the friction plate to transmit power.

For example, in the picture above, the left is the multi-plate clutch module, and the right is its exploded view. Relying on the clutch plate, the connection and interruption of the power supply to the green and yellow parts can be achieved.

There are two types of clutch plates in the picture: gray and yellow. The gray one has teeth on the outside, and its teeth are stuck in the grooves of the yellow part and connected with the yellow part. The yellow one has teeth in it, and its teeth get stuck in the grooves in the green part, and they connect together. When in use, the clutch plate is pressed by external pressure, power is transmitted through friction, and the clutch is disconnected after the external pressure is released. The amount of power transmitted by the clutch can be adjusted by controlling the pressure.

Multi-plate clutches are widely used. For example, the picture above shows a motorcycle clutch, which uses a multi-plate clutch. What do dry clutch and wet clutch mean?

I mentioned that the manual transmission clutch does not require oil when working and can be used after assembly. That's why it's called a dry clutch. Dry clutches can only rely on air cooling and are not suitable for long-term semi-linkage, otherwise they will easily burn out if the temperature rises too quickly.

The multi-plate clutch we mentioned needs to be used with lubricating oil, so it is called a wet clutch. What is dual clutch? Dual clutch is two clutches, and what we usually call dual clutch refers to an automatic transmission, which is the so-called dual clutch transmission. Its principle is also relatively simple, which is equivalent to combining two manual gearboxes to make a new gearbox. For example, Volkswagen's 6-speed dual-clutch transmission can also be seen as consisting of two manual transmissions A and B. A controls 1st, 3rd and 5th gears, and B controls 2nd, 4th and 6th gears. Ab uses one clutch each. When driving in 1st gear, the A gear clutch is engaged and the B gear clutch is disengaged. At the same time, B will shift to 2nd gear in advance. When upshifting is required, clutch A is disconnected. At the same time, the clutch of B is engaged, and the power can be switched quickly without interruption. As a result, the dual-clutch gearbox shifts very quickly. What is a wet dual-clutch gearbox and a dry dual-clutch gearbox?

I guess you already know that a dual-clutch gearbox that uses a dry clutch is called a dry dual-clutch gearbox, and a dual-clutch gearbox that uses a wet clutch It's called a wet dual-clutch gearbox. It's that simple. For example, the image above shows Volkswagen's dry dual-clutch transmission, with two coaxial dry clutches.

At this time you should have a new understanding of the clutch.

One million car purchase subsidies