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

Introduction: Many people may have some entanglements when buying a car, not knowing whether to choose a dry dual-clutch or a wet dual-clutch What is the difference between the two? <>

The principle of dry dual clutch and wet dual clutch is basically the same, because both clutches work in turns. The only thing that is the connection medium is different when working, the connection medium of the dry double clutch is air, while the wet double clutch is connected by oil. The heat dissipation of the two of them is also different, the dry clutch heat dissipation mainly relies on air, but if compared in terms of performance, the heat dissipation function of the dry clutch is not as good as the wet clutch, and there are many dry clutches that are prone to problems in the process of use.

However, the dry clutch is more practical, and its cost and maintenance cost are relatively low. <>

The clutch is the bridge of the car, which can transmit the power of the engine to the gearbox. During the driving of the car, the clutch plays a transitional role. The clutch can ensure that the car can start smoothly, and at the same time, the clutch is also more convenient for the driver to change gears during the driving process of the car.

In the process of driving, you can continuously adapt to the requirements of driving through different gears. If it is said that it works without a clutch, it can cause damage to the car due to excessive pressure in the gearbox. The clutch also prevents overloading of the turning system, which can make the rotating parts particularly vulnerable to damage if the car brakes urgently.

Because there are many people who will hear some abnormal noises when driving a car. Therefore, it is necessary to maintain the clutch regularly, because the roller skating condition of the clutch is relatively poor. After a long period of use, the clutch bearing should be removed, and it can be cleaned with diesel.

When driving a car, do not press the clutch at any other time except when starting, shifting gears, and braking at low speeds. Doing so may cause the clutch to slip and may also cause the clutch plate to corrode. After the clutch release jaws and bearing covers have been cleaned, they can also be lubricated with engine oil or butter.

At the same time, the operating structure of the clutch should be adjusted regularly, and some dirt on it should be removed. If some abnormalities are found, replace the friction plate with a new one in time.

Dual clutch is divided into dry double clutch and wet double clutch, their structure is the same, the principle of gear shift is the same, the difference lies in the heat dissipation mode of the clutch, the clutch plate of dry double clutch is like this when combined, the clutch plate relies on air cooling when combined, and the heat dissipation of dry double clutch relies on the air flow heat dissipation after the vehicle is driven, so there are some heat dissipation holes around the clutch, when the traffic jam, the vehicle frequently starts, upshifts, downshifts, because the clutch does not have effective heat dissipation, It is easy to cause the clutch plate to overheat, and then alarm, shorten the life of the clutch plate, and the biggest disadvantage of the dry double clutch is the low wading depth, because the dry double clutch relies on air cooling and heat dissipation, there will be heat dissipation holes around the clutch plate, and the water will enter the clutch device, which is easy to cause the clutch to rust and shorten the life.

The wet dual clutch is relying on oil to dissipate heat, we rub our hands back and forth in the basin, the hands do not feel the heat, the wet double clutch is this principle, add transmission oil to the sealed clutch device, and then supplemented by the radiator, it will not shorten the clutch life due to the dry grinding of the clutch plate.

The dry dual-clutch is most afraid of congestion and wading, and traffic congestion is no longer the patent of big cities, so the dry dual-clutch is not recommended for everyone to buy, and the wet dual-clutch is much more stable, from the perspective of vehicle complaints, but any of the dual-clutch gearbox can not avoid shift frustration, abnormal noise and jitter, but the degree of failure is not the same, if you care very much about shift frustration and jitter, then don't consider the double clutch, after all, you want to shift fast, fuel efficient and want less problems, less failure rate, You can't have it both ways.

The difference between a dry dual clutch and a wet dual clutch is that the two have different clutch plates working environment. Wet dual clutch plates are clutch plates that are immersed in transmission fluid, while dry dual clutch plates are in direct contact with the engine flywheel.

Technical maturity and reliability: Wet dual clutch is more stable to use because the clutch disc works in the hydraulic oil, and the oil has a certain heat dissipation effect. Because of poor heat dissipation, dry dual clutch is prone to the risk of high temperature or even ablation of clutch plates in congested urban areas.

At this level, the wet dual-clutch transmission technology is more mature.

Other differences: the wet dual-clutch structure is complex, the manufacturing cost is high, and its power transmission efficiency is not as high as that of the dry type.

The difference between dry dual clutch and wet dual clutch: 1. The connection medium is different: dry dual clutch is transmitted by air; The wet dual-clutch is fluid-driven.

2. The structure is different: the dry dual-clutch gearbox has no hydraulic system; The clutch of the wet dual-clutch transmission is mounted in a sealed oil chamber filled with hydraulic fluid.

Dry double clutch and wet double clutch, although the name is different, but their working principle is roughly the same, the biggest difference between dry and wet clutch is that the connection medium of the driving disc and the driven disc is different, the dry double clutch is transmitted by air, and the wet double clutch is by oil.

The way of working is different, the fuel used is different, the range of use is different, the role of the clutch is different, because it will be used in different cars, so it shares different responsibilities.

The biggest difference between dry and wet dual-clutch transmissions is that they are cooled in different ways.

Dry dual-clutch transmissions are cooled by air, and wet dual-clutch transmissions are cooled by oil.

The structure of dry dual-clutch transmission and wet dual-clutch transmission is basically the same, the structure is relatively simple, and the straightforward point is that two sets of manual transmission transmissions are combined, and the technical content is not high.

1. Wet double clutch.

Plates, which refer to the clutch plates soaked in the transmission.

in the oil, while the clutch plates of the dry dual-clutch are in direct contact with the engine flywheel;

2. Technology maturity.

With reliable wet dual clutch because the clutch plates work on hydraulic oil.

, the oil has a certain heat dissipation effect, and it is naturally more stable to use;

3. Due to poor heat dissipation, dry dual-clutch is prone to the risk of high temperature or even ablation of clutch plates in congested urban areas. At this level, the technical maturity of wet dual-clutch transmissions is high.

Dry dual-clutch and wet are fundamentally the same basic transmission principle of the two transmissions, which use two clutches to work in turns. The biggest difference between the two is the wet dual-clutch transmission.

The clutch is mounted in a sealed oil chamber filled with hydraulic fluid, while the dry dual-clutch gearbox has no hydraulic system and its torque is transmitted through the friction plates of the driven disc.

Because the clutch plate of the wet dual-clutch transmission is soaked in oil, the oil has a certain heat dissipation effect, so the performance is more stable when used. However, it is also relatively more expensive to build, and it is less efficient at transmitting power than dry type. Dry dual-clutch transmissions have poor heat dissipation and are therefore prone to failure due to high temperatures.

First of all, the transmission efficiency is different: from the structure of the clutch, we can see that the structure of the wet clutch is more complex, and the complex structure means higher energy loss, so the transmission efficiency of the wet dual-clutch gearbox is lower, which takes up more engine power, and under the condition that other factors remain the same, it means that the fuel consumption will be higher.

Response speed: The dry clutch is transmitted through the direct contact of the metal sheet, the power transmission is more direct, the metal plate is compressed, the transmission ratio is increased, and the effect is direct and significant; The wet type should use the oil as the "middleman", from the speed of the driving disc to the increase of the centrifugal force of the oil, and then to the speed of the driven disc, there is an additional set of procedures, so the response speed will be a little slower.

Withstand torque: the metal friction plate of the dry clutch can not withstand too much torque, if it receives too much stress impact, it is easy to cause damage to the friction plate, therefore, the dry clutch can only be used for small displacement and low torque output models, and even, some models in order to adapt to the dry clutch, deliberately output the torque of the engine in low gear, in order to protect the transmission clutch.

There is no such problem at all in wet clutches, as small as a family car with a displacement of 200Nm, as large as a supercar with a displacement of more than 1000Nm, can be competent, and even in many tens of thousands of N m large diesel engines, electric motors, we can see the application of wet clutches.

All dual-clutch transmissions can be divided into three parts: dual-clutch, gearbox, and control (spool valve box). The clutch part is divided into dry and wet.

Dry double clutch means that the two clutch plates and the intermediate pressure plate are directly exposed to the air, relying on air flow to dissipate heat, and the combination and disconnection of the clutch are driven by the slide valve box to push the clutch push rod K1 and K2 to hold.

Hello, is there anything to do?

Wet dual-clutch is better than dry clutch and ** is also higher.

Wet dual clutch refers to a multi-plate clutch with two sets of clutches, one large and one small, coaxially assembled. They are assembled in a sealed oil chamber filled with hydraulic oil. As a result, the wet clutch structure has better modulation capacity and excellent hot melt performance, and can transmit more torque without damage.

However, due to the factors of layout and friction materials, the overall size of the wet dual clutch is larger than that of the dry dual clutch, which is not conducive to the layout of the vehicle powertrain.

1. The structure is differentThe dry dual-clutch is composed of an active part, a driven part, a pressing mechanism and a control actuator; The wet dual clutch consists of a hydraulic pump, lubricating fluid, cooling pipes, and an external cooling system.

2. The linkage medium is differentThe medium that the dry dual-clutch relies on is air; The medium on which the wet dual clutch relies is oil. The basic transmission principle of both dry and wet dual-clutch transmissions is the same, and both clutches are used for alternate operation.

Dry dual-clutch precautions.

It should be noted that the dual-clutch gearbox is not suitable for frequent starting, long-term low-speed driving, or stopping with the traffic flow, otherwise it is easy to overheat and lead to failure. As soon as the trip computer gives a warning, it must be stopped immediately to cool the gearbox.

In the case that we can't avoid traffic jams, try to use low gears to follow the car, including manual or S gears, so as to avoid excessive clutch heat caused by the constant change of the transmission shift mechanism.

The difference between a dry dual-clutch transmission and a wet dual-clutch transmission is whether the clutch plates are soaked in the transmission oil. The clutch plates of a dry dual-clutch transmission are not soaked in the transmission oil, and the clutch plates of a wet dual-clutch transmission are soaked in the transmission oil. The dual-clutch transmission is a product developed based on a manual transmission, which is similar in structure to a manual transmission.

The dual-clutch gearbox simply has one more set of clutches and a set of shift control mechanisms than the manual gearbox, and one set of shift control mechanisms of this gearbox is used to control odd-numbered gears, and another set of clutches is used to control even-numbered gears.

The dual-clutch gearbox has a fast shift speed and high transmission efficiency. Dry dual-clutch transmissions can shift faster and are more efficient than wet dual-clutch transmissions.

However, the dry dual-clutch transmission cannot withstand the high torque, and the heat dissipation performance of this transmission is not as good as that of the wet dual-clutch transmission.

The wet dual-clutch transmission can withstand higher torque, and the reliability and stability of this transmission is somewhat better than that of the dry dual-clutch transmission.

The difference between dry dual clutch and wet dual clutch: 1. Different heat dissipation: dry dual clutch is air heat dissipation and air cooling to drive heat; The wet dual-clutch is soaked in oil and has high heat dissipation efficiency; 2. Different ways:

The dry clutch is a manual transmission friction plate clutch, which has high mechanical transmission efficiency and complex operation.

One of the main differences between them is the way the clutch is combined, the wet dual clutch, which is decelerated and cooled by lubricating oil, while the dry dual clutch does not have such a thing.

The difference between dry dual-clutch and wet dual-clutch is: different composition, different hot melting, and different use.

First, the composition is different.

1. Dry double clutch: The dry double clutch is composed of three clutch plates of similar size coaxial stacked and installed.

2. Wet double clutch: Wet double clutch is a double clutch that is coaxially installed together for two groups, one large and one small.

Second, the hot meltability is different.

1. Dry dual-clutch: The hot melt of dry dual-clutch is not as good as that of wet clutch, so the torque it bears is relatively small.

2. Wet dual clutch: Wet dual clutch has excellent hot meltability, and it can transmit relatively large torque.

Third, the use is different.

1. Dry dual-clutch: Dry dual-clutch is generally used with small displacement engines.

2. Wet dual-clutch: Wet dual-clutch is generally used with large-displacement engines.