The advent of automatic transmissions? What is an automatic transmission called?

The advent of automatic transmissions has reduced the tension of drivers when driving cars. Since there is no need to change gears during driving, the driver can pay full attention to the situation around the vehicle, and thanks to the precise electronic control, the automatic transmission can be adapted not only to a wide range of driving conditions, but also to different driving styles. This means that the gear shift time depends on the driving style, the engine load, the speed of the vehicle and the engine speed, thus making the most of the engine's effective power.

Since the introduction of the two-speed "powerglide" transmission developed by General Motors for Chevrolet (1950-1973), advances in automatic transmission technology have dramatically changed the driving experience, making driving more comfortable, more efficient, and more powerful.

Some. The topic of China's independent production of automatic transmissions has been common, and Chinese car companies have mastered mature technologies step by step from the initial imitation, such as Chery, Geely, and Great Wall, all of which already have self-produced automatic transmissions.

There is no independent intellectual property right for automatic transmission for cars, I mean it can be actually loaded and sold. It's not in the labs, universities, or corporate research institutes. Ambitious in the development of Chery, Geely and so on.

BTW: I used to be a transmission designer in the transmission department of Chery Automotive Engineering Research Institute.

Although there are many types of vehicles, the structure is similar. This should be said to be the credit of standardization, but also the need for large-scale production lines. With the development of society, the progress of science and technology and the change of demand, the shape of railway vehicles has begun to change, especially the passenger car is no longer the same old face.

However, their basic structure has not changed significantly, but the specific parts have a more scientific and advanced structural design.

Generally speaking, the basic structure of the vehicle is composed of five parts: the car body, the undercarriage, the running part, the coupler buffer device and the braking device.

The body is the part of the vehicle that is used to load goods or passengers, and is the basis for the installation and connection of other components of the vehicle. The body of the early vehicles was mainly made of wood, supplemented by steel plates, bow rods, etc. In modern times, the car body is mainly steel structure or light metal structure.

Yes, Chery has, some other car manufacturers also have, but there are few, the gear is relatively small, the use and stability are not as mature as foreign ones, and the best gearbox is still German technology and Japanese technology.

All gearboxes in the world have to enter the museum, the State Intellectual Property Office has announced a kind of all-gear gearbox that can exceed 100 gears, small size, simpler shifting, manual, automatic switching, accept violent output, adapt to the future including the development of unmanned construction machinery, you can go to see, the name is a bit low-key, called a gear shaftless gearbox that can multi-gear transmission.

The world's top ten gearboxes were released, and 5 independent brands were on the list.

For example, AT gearbox, ST gearbox, CVT gearbox, Aisin gearbox, etc., these gearboxes are among the top three, and most of the world's cars use these gearboxes.

AT gearbox.

ZF 8AT

Universal 10AT

SAIC 7DCT (DM21).

Aoyama Industrial 7DCT (DF727).

FAW 7DCT (DCT400).

Wanliyan CVT25

Electrified gearbox.

Toyota e-CVT

BYD 6DCT T75 plug-in hybrid transmission.

1. Honda ZF Shengrui 8AT. 4. Volkswagen 7dct. 5. Honeycomb Yichuang GAC Getrag GM CVT. 9. Honda i-MMD hybrid transmission. 10. Geely hybrid 7DCT.

Recently, the list of "World's Top Ten Transmissions" sponsored by the Automotive Evaluation Research Institute was released. Which gearboxes are on the list, and independent brands account for half.

1. Mercedes-Benz 9AT

2. ZF 8AT

3. General 10AT

4. SAIC 7dct

5. Tsingshan Industrial 7DCT

6. FAW 7dct

7. Wanliyang CVT

8. Volkswagen 6dct

9. Toyota e-CVT

10. BYD 6dct

What is an automatic transmission? There are four common types of automatic transmissions, which will take you to understand.

How much do you know about automatic transmissions in cars? Let's take a look at this problem**, I hope these contents can help friends in need.

Automatic transmissions have long been the norm in today's car series. In another two years, you won't be able to think of a car with a manual transmission. The manual transmission will slowly be withdrawn from the stage of history, and in its place will be the automatic transmission.

So is it really possible to use an automatic transmission? What makes us evolve is the operation and termination process of the automatic transmission.

Many models use one-button start, that is, one-button start, which is very secret to many people. In fact, it's the same as a key. When the key is in operation, the second and second gears are self-checked, and the third gear is running.

When the one-button starts gradually, the light touch is the gradual self-check, and the long press brake system is gradual. There was only one extra pose between them. There has been no major change in the whole process of operation.

If the automatic transmission is not disassembled and cleaned, there are many things that need to be paid attention to when actually operating. If the use of counterfeit and shoddy goods, counterfeit and shoddy goods, or unreasonable use, it is very easy to endanger safety accidents, and it is likely to seriously affect the destruction of the transmission. Therefore, it is necessary to apply the products of large enterprises on the formal platform of the standard service provider to ensure the safety, reliability and control of the transmission.

In addition, when traveling, special attention should be paid to avoid deviation in neutral; When towing the belt, the driving wheel should be avoided from turning over on the ground; When the car is terminated, you need to avoid keeping the car in forward gear for a long time while pressing the brake pedal.

The automatic hydraulic transmission system completes the automatic transmission system according to the composition of the hydraulic transmission system and the planetary reducer, which is generally composed of torque converter, planetary reducer organization, shift actuator, shift automatic control system, shift control organization and other equipment. The characteristics of the foot-operated CVT are a series of continuous standard values rather than interruption points, which can better harmonize the external driving standards and engine load of the car, make full use of the development potential of the engine, improve the rationality of the body-in-white gasoline and diesel, and make the car have the characteristics of seamless splicing traction belt, thereby significantly improving the characteristics of the body-in-white.

If the gearbox oil is completely changed, the transmission cleaner should be applied in conjunction with the gearbox oil switch. Before draining the old oil, the cleaning fluid is poured into the transmission to propel the wheels to the empty hang. Once the car is stopped, the detergent can continuously shift gears to clean all interior areas.

After cleaning, drain the old oil with the power switch and introduce new oil at the same time. Eventually, the filtration unit is replaced.

This is a very important part of the car, the automatic transmission determines the quality of the car, determines the driving speed and driving feeling of the car.

I know a lot about the fact that the automatic transmission is very complex inside, with dense oil circuits to provide different gears.

I don't know much, but I do know that there are no friction plates inside the automatic transmission.

Haval H1 – 6-speed foot-operated automatic (AMT) transmission.

Model specification: 452ASG

Equipped with the 2017 model, 2016 model, and 2015 model year.

Equipped models: Great Wall C30, M4, etc.

Technical characteristics of the 6AMT gearbox.

Haval H1 is equipped with a GETRAG 6AMT gearbox, which is basically similar to the manual transmission, which is mainly because it is only modified on the basis of the manual gearbox with a microcomputer-operated automatic speed regulation system software, which replaces manpower on the computer to step on the clutch and shift the actual operation, and then completes the automatic gear shift, which has the characteristics of low cost, convenient control and high transmission system speed.

6AMT gearbox puzzle.

The 6AMT gearbox is not very comfortable to shift gears, it is not smooth enough, and it is very easy to have a relatively prominent feeling of shaking when changing gears. And in the whole process of shifting, it will cause the driving force to be terminated, and the rapid performance in the whole process of shifting is not very good, so it is only used in some low-end car series.

Haval H1 – 5-speed manual (MT) gearbox.

Model specifications: MQ200

Equipped with the 2017 model, 2016 model, and 2015 model year.

Equipped models: Geely King Kong, FAW Junpai D60, Sway X7, etc.

Technical characteristics of the 5MT gearbox.

The 5-speed manual gearbox used in Haval H1 is a product of Aisin in Japan, which has a simple structure, perfect technology, reliable performance, cheap manufacturing and maintenance costs, and high efficiency of the transmission system, which will be relatively more fuel-efficient. In addition, because it is operated by purely mechanical equipment, the gear shift response is fast, and it can also show the driver's intention and direction more immediately, so it is more safe and happy to drive.

5MT gearbox puzzle.

Compared with the fully automatic transmission and the AMT transmission, the 5-speed manual transmission is more complicated in actual operation, and the shortcomings of significant shaking during gear change are also irreparable, and the stability is not as good as 6MT. In addition, the Haval H1 gearbox shift travel arrangement is slightly long, and there will be abnormal noise flutter of a relatively large core height after hanging 5th gear, which is also a problem.

Millions of car purchase subsidies.

Four. They are: 1. Hydraulic automatic transmission (AT):

Hydraulic automatic transmission through the combination of hydraulic transmission and planetary gear to achieve automatic transmission, generally by the hydraulic torque converter, planetary gear mechanism, shift actuator, shift control system, shift control mechanism and other devices, AT does not use clutch shift, gear less change, stable connection, so easy to operate, not only to the driver to bring convenience, but also to the car to bring comfort.

2. Mechanical continuously variable automatic transmission (CVT):

The mechanical continuously variable automatic transmission is characterized by the fact that the gear ratio is not an intermittent point, but a series of continuous values, so as to better coordinate the external driving conditions of the vehicle and the engine load, give full play to the potential of the engine, improve the fuel economy of the vehicle, and make the car have no leakage of traction and transportation holes, so as to significantly improve the performance of the vehicle.

3. Electronically controlled mechanical automatic transmission (AMT):

The electronically controlled mechanical automatic transmission is improved on the basis of the traditional manual gear transmission, which is a mechatronic and hydraulic integrated automatic transmission that combines the advantages of AT (automatic) and MT (manual); AMT not only has the advantages of automatic hydraulic transmission and automatic transmission of Li Liang speed transmission, but also retains the advantages of high efficiency, low cost, simple structure and easy manufacturing of the original manual transmission gear transmission.

4. Dual-clutch automatic transmission (DCT):

The dual-clutch automatic transmission adopts two sets of clutches, and the two sets of clutches work alternately to achieve the effect of backlash-free shifting. DCT combines the advantages of AT and AMT, with high transmission efficiency, simple structure and low production cost, which not only ensures the power and economy of the car, but also greatly improves the comfort of the car operation.

Millions of car purchase subsidies.