The face of today's car transmission

Now, every time people watch the F1 competition, they are always impressed with that kind of speedy feeling. At this moment, what seems to be the most talked about is the performance of the engine and the driver’s driving skills. Moreover, it is a standard for the quality of the cross-cars that seems to be the quality of the cross-cars, not forgetting to experience a sense of speed when driving or looking at the performance of the engine when buying a car. Indeed, having a "healthy heart" is very important because it is the creator of motivation. However, the speed control is the transmission behind it.

From the point of view of the transmissions configured on different models on the market today, there are mainly manual transmissions (MT), automatic transmissions (AT), manual/automatic transmissions (AMT), and continuously variable transmissions (CVT).

Manual Transmission (MT)

The manual transmission (MTManual Transmission) adopts a gear set, and the gear number of each gear set is fixed, so the gear ratio of each gear is a fixed value (so-called "stage"). For example, the first gear ratio is 3.455, the second gear is 2.056, and the fifth gear is 0.85. These numbers are multiplied by the total gear ratio, which is the total gear ratio. There are only 5 values ​​in total (that is, there are 5 levels), so say it It is a graded transmission.

Traditional manual transmission

It has been asserted that the shortcomings of tedious driving operations have hindered the rapid development of automobiles, and manual transmissions will make sense in the short term of “lessons” and in terms of material development. However, from the current market demand and application perspective, I believe that manual transmission will not leave prematurely.

First of all, from the perspective of commercial vehicles, the function of manual transmissions cannot be replaced by other transmissions. In the case of trucks, for example, trucks are used for transportation and usually carry several tons of goods. Faced with such high "pressure", in addition to the engine's need for powerful power, it also requires the full support of the transmission. We all know that there is a "strength" in the first gear so that at the start we have enough traction to drive the car. Especially in the face of climbing roads, its characteristics are very obvious. For other new types of transmissions, though they are easy to operate, these features are not yet available.

Second, for the old drivers and most men's drivers, their favorite is the manual transmission. Judging from the specific situation of our country, the manual transmission almost runs through the history of automobile development in China as a whole. Drivers in the suburbs of the country are “manually” driving. Their awareness of manual transmission is very profound. If they are allowed to change the routine, This is unrealistic. Although automatic transmissions and continuously variable transmissions have become very common, most young drivers still advocating manual work, especially the kind of pleasure brought by manual shifting when overtaking, so some mid- to high-end cars (especially cars) are not afraid Easily give up the manual transmission. In addition, nowadays in our country's automobile driving schools, the coaches are all manual transmissions. In addition to being economical, the key is to enable students to lay solid basic skills and exercise coordination.

Third, with the continuous improvement of living standards, the car has now entered the family. For the ordinary working-class people, the economical car is the most suitable. The manual transmission is matched with the economical car manufacturer with its own price/performance ratio, and it is economically applicable. Sales of cars have always been at the top of the car market. For example, Xiali, Chery, Geely and other domestic manufacturers of economic cars are all manual transmissions, and their models are basically 5-speed manual transmissions.

Automatic transmission (AT)

An automatic transmission (abbreviated as AT) utilizes a planetary gear mechanism for shifting gears, and it can automatically shift gears according to the degree of accelerator pedal and the change in the vehicle speed. Drivers only need to use the accelerator pedal to control the speed.

Automatic Transmission

(In the figure, each automatic gear: Marker P (Park), R (Back), N (Neutral), D (Forward), and additional gears "2" and "1" in forward gear For starting or uphill slopes)

Although the automatic transmission does not have a clutch, there are many clutches in the automatic transmission. These clutches can be automatically separated or closed in response to changes in the vehicle speed, thereby achieving the purpose of automatic transmission.

In the mid-range car market, the automatic transmission has its own sky. Users who want to use this type of vehicle want to enjoy the feeling of happiness at the time of high-speed driving as much as possible in order to operate the vehicle with ease and reduce driving fatigue. On the highway, this is a perfect embodiment. Moreover, as far as Beijing is concerned, the current traffic conditions are not good, and traffic jams are a regular thing. Sometimes it is necessary to stop at the start several times. If a driver uses a manual transmission, the driver will pick up the files repeatedly and the operation is very complicated. It is especially miserable for novices. Using automatic files will not be so troublesome.

In the market, the sales status of such vehicles is still good, especially for female friends. Usually, female friends seek convenience when driving. In order to popularize this type of vehicle in our country, the key is to solve the problem of road conditions. The current situation of road conditions is uneven, and it is difficult to take advantage of the automatic transmission.

Manual/Automatic Transmission (AMT)

In fact, through the understanding of some riders, they do not want to abandon the traditional manual transmission, and at some point also need an automatic feeling. This was the birth of manual/automatic transmissions. The transmission was first introduced on the Porsche depot 911 in Germany, called Tiptronic, which allows high-performance sports cars to not be limited by traditional automatic transmission restraints, allowing drivers to enjoy manual shifting. This type of car has "+" and "-" selection gears on its gear. In the D range, it is possible to freely change the downshift (-) or upshift (+) as if it were a manual shift.

Fiatriotronic manual transmission

The automatic-manual transmission system provides people with two types of driving methods - manual gear for driving pleasure, and automatic transmission when the traffic is congested. Such a speed change method is very suitable for the present situation in China. As I mentioned above, the manual transmission has a large use group, and the automatic transmission can also adapt to the women's groups as well as the troubles caused by the traffic jams. This is a consideration for families where both husband and wife can drive. Both sides have embodied the "husband and wife relationship." Although this two-in-one configuration has higher technical content, this type of car is not unattainable in terms of price, such as Guangzhou Honda Fit 1.3L CVT hatchback, Nanjing Fiat 2004 Palio 1.3 HL Speedgear, Nanjing Fiat Siena Speedgear EL these "two in one" models are priced at 100,000 yuan, the price level is still relatively low.

Therefore, manual/automobiles still have considerable advantages in popularity. The auto manufacturers and supporting transmission manufacturers should take this as an opportunity to carefully build such transmissions according to market requirements. Because this type of transmission has a relatively broad market.

CVT

    The development of today's automobile industry is very rapid, and users are increasingly demanding the performance of automobiles. The development of automotive transmissions is not limited to this, and CVTs are the “best realm” people are pursuing. The CVT was originally invented by the Dutch Van Doorne's. The continuously variable transmission system does not shift gears like a manual transmission or an automatic transmission. Instead, it uses two pulleys and a steel belt to shift gears. The transmission ratio can be changed at will, and there is no sudden feeling of shifting. It can overcome the shortcomings of "sudden shift", slow throttle response, and high fuel consumption of ordinary automatic transmissions.

Continuously variable transmission structure diagram

Usually some friends call the automatic transmission a continuously variable transmission, which is wrong. Although they have in common, but the automatic transmission only shift is automatic, but its transmission ratio is graded, which is what we often say, the general automatic transmission has 2 to 7 files. The CVT can achieve a stepless change of the speed ratio within a certain range, and select several common speed ratios as commonly used “steps”. The engine equipped with this technology can automatically obtain the most suitable gear ratio at any speed.

From the perspective of the market, although the CVT is a component with a relatively high technical component, it has also entered the “body” of an ordinary car. Each displacement of the Honda Fittings has a configuration with a CVT. Transmission, both convenient and fuel-efficient, and the price is only 9.68 ~ 116,800 yuan. And Chery Automobile Sales said that the QQ CVT will be available at the end of the year. It seems that the use of CVTs in mid-range vehicles will become more widespread.

Regardless of the future changes in the automotive market and how cruel the competition, these types of transmissions will have their own advantages in the use of automobiles. As a manufacturer of transmissions, do not rush to pursue the production of high-end products. We should do a good job of product quality and service based on our own strength and market demand, so that we can win the initiative in the market competition.

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