How does a gearbox work? What gearbox is best right now?

The principle of the gearbox is to change the gear ratio through large and small gears, and the best transmission now is of course an automatic transmission.

AT automatic transmission.

As early as the 60s of the last century, many models in the United States have used automatic transmissions as the transmission mechanism of vehicles.

Early automatic transmissions did not have as many gears as they do now, often with only a starting gear, a second gear, and a 1:1 cruise gear. Later, with the invention of the torque converter, the gears of the automatic transmission were reduced from 3 gears to 2 gears.

Torque converter.

The main reason for this is that the torque converter can be used to implement the shifting function by sliding, so the second gear that was used to connect is meaningless.

Later, over time, the automatic transmission became smaller and smaller, which laid a solid foundation for an increase in the number of gears. At this time, the role of the torque converter has gradually changed from the original sliding torque changing device to an accessory to reduce the transmission running.

The principle is: the working principle of the gearbox is to assemble two turbine blades in a space filled with hydraulic oil, which are connected with the power input end and the output end respectively, and the impeller at the power input end generates a strong vortex to push the impeller at the output end, so as to achieve power transmission.

If you pursue fast transmission, or want to drive in crowded conditions, choose automatic, manual or continuously variable transmission, in terms of its economy: manual transmission, fuel efficient, **low.

The working principle of the gearbox is to assemble two turbine blades in a space filled with hydraulic oil, which are connected to the power input and output respectively, and the impeller at the power input end generates a strong vortex to push the impeller at the output end, so as to achieve power transmission. Methods of maintaining the gearbox in daily life: 1. Regularly check whether the oil of the gearbox is normal

After starting the engine, preheat the gearbox oil to about 50, and then put the gear selection lever in each gear for 2 seconds and then put it in the parking gear, at this time, the normal oil level of the dipstick should be located between the highest and lowest lines, if it is not enough, the same quality oil should be added in time;

2. Regularly change the oil of the automatic transmission: the oil change cycle of most automatic transmissions is generally two years or 4 60,000 trillion kilometers, but it is recommended to change the oil 2 to 3,000 kilometers in advance, and the specific oil change cycle can also be seen in the owner's manual;

3. Correct replacement of transmission oil: by 2010, the better oil change method is dynamic oil change, using special gearbox oil change equipment, in the process of gearbox operation, the old oil is fully circulated, and the new gearbox oil is added after the discharge is clean, so that the oil change rate is as high as 90% or more, to ensure a good oil change effect;

4. The owner should cultivate the awareness of active inspection, maintenance and maintenance, and can learn some basic knowledge of maintenance and maintenance of the vehicle, carefully read the instructions for use with the car, and remember some necessary data. Scientific car maintenance can ensure that the vehicle is in good technical condition and ensure driving safety.

Millions of car purchase subsidies.

The gearbox works by assembling two turbine blades in an empty chamber filled with hydraulic oil, which are connected to the power input and output. The impeller at the power input end generates a strong vortex to push the impeller at the output end to achieve power transmission.

Functions of the gearbox:

Change the transmission ratio to expand the torque and speed range of the drive wheels; With the engine rotation direction unchanged, the car can drive backwards. Gearbox, also known as transmission, is a wild mechanism used to change the speed and torque from the engine, which can change the transmission ratio between the output shaft and the input shaft in a fixed or stepwise manner.

Classification of gearboxes:

The step-by-step transmission adopts gear transmission, and there are several transmission ratios with fixed losses; Continuously variable speed is a transmission system that can continuously obtain any transmission ratio within the transmission range; A combined transmission refers to a hydromechanical transmission consisting of a hydraulic torque converter and a geared continuously variable transmission.

Millions of car purchase subsidies.

The working principle of the gearbox is as follows: 1. The manual gearbox is mainly composed of gears and shafts, and the variable speed and torque are generated through different gear combinations. 2. The automatic transmission AT is composed of a hydraulic torque converter, a planetary gear and a hydraulic control system, which achieves variable speed and torque through hydraulic transmission and gear combination.

The main functions of the gearbox are as follows: 1. Change the transmission ratio, expand the range of torque and speed of the driving wheel, so as to adapt to the often changing driving conditions, and at the same time make the engine work under favorable conditions of higher power and lower fuel consumption. 2. Under the condition that the direction of rotation of the engine does not change in front of the land, the car can drive backwards.

3. Use neutral gear to interrupt power transmission, so that the engine can start, imitate and change gear, and facilitate the transmission to shift gears or carry out power output. 4. The transmission is composed of a transmission mechanism and a control mechanism, and a power take-off can also be installed when necessary.

According to Bian Xiao, many friends don't know much about some car knowledge. In order to facilitate everyone to understand this knowledge, what is the principle of the gearbox introduced by Bian Xiao today? Interested friends can learn about this problem, which may be helpful to you.

The principle of the gearbox is as follows: the key of the gearbox is composed of gears and shafts, and the different combinations of gears cause changes in speed and torque; The automatic transmission AT consists of a torque converter, planetary gears, and a hydraulic control system that changes speed and torque through a combination of hydraulic transmission and gears. How to maintain the gearbox?

First of all, master the interval of changing the oil of the automatic transmission. The internal adjustment mechanism of the automatic transmission is very precise and the clearance is small, so most manufacturers advocate that the oil change interval of the automatic transmission should be two years or 4-60,000 kilometers. In the process of normal use, the working temperature of transmission oil is mostly around 120 degrees Celsius, so the quality of the oil is very high and must be kept clean.

Secondly, the transmission oil is used for a long time, which will cause oil scale, which may form sludge, increase the wear of friction plates and components, and also affect the oil pressure of the system and affect the power transmission. Thirdly, the sludge in the dirty oil will make the valve body movement in each valve body unsmooth, and the oil pressure adjustment will be affected, so that the automatic transmission will be abnormal.

<> Gearbox Introduction Gearbox mainly refers to the gearbox of the car, which is divided into manual and automatic two, the manual gearbox is mainly composed of gears and shafts, and the variable speed torque is generated through different gear combinations; The automatic transmission AT is composed of a hydraulic torque converter, planetary gears and a hydraulic control system, which achieves variable torque through hydraulic transmission and gear combination. The functions are: 1. Change the transmission ratio; 2. Under the condition that the direction of rotation of the engine remains unchanged, the car can drive backwards; 3. Use neutral gear to interrupt power transmission, so that the engine can start and idle, and facilitate the transmission to shift gears or carry out power output.

Working principleThe manual gearbox is mainly composed of gears and shafts, and the variable speed and torque are generated through different gear combinations; The automatic transmission AT is composed of a hydraulic torque converter, planetary gears and a hydraulic control system, which achieves variable torque through hydraulic transmission and gear combination. Among them, the hydraulic torque converter is the most characteristic component of the AT, which is composed of components such as pump wheels, turbines and guide wheels, which are directly input to the engine power to transmit torque and separation effect. The wind from one active fan will drive the blades of the other passive fan to rotate, and the flowing air - wind becomes the medium of kinetic energy transfer.

If the liquid is used instead of air as the medium to transfer kinetic energy, the pump wheel will drive the turbine to rotate through the liquid, and then add a guide wheel between the pump wheel and the turbine to improve the transfer efficiency of the liquid. Because the torque converter automatic torque range is not large enough and the efficiency is low, so several rows of planetary gears are connected in series behind the turbine to improve efficiency, and the hydraulic control system will operate the planetary gears by itself with the change of engine work, so as to achieve automatic gear shifting.

The classification is divided according to the way the transmission ratio changes:

1. Step-type transmission is the most widely used one at present. It is geared and has several fixed-value ratios. According to the different types of gear trains, there are two types of shaft fixed transmissions (ordinary transmissions) and shaft rotary transmissions (planetary gear transmissions).

Currently, transmissions for cars and light and medium-duty trucks typically have a ratio of 3-5 forward gears and one reverse gear, and in combined transmissions for heavy trucks, there are more gears. The number of transmissions refers to the number of forward gears.

2. The transmission ratio of the continuously variable transmission can be changed according to infinite multi-stage within a certain numerical range, and there are two common types: electric type and hydraulic type (dynamic and hydraulic type). The variable speed transmission component of the electric continuously variable transmission is a DC series motor, which is not only used in trolleybuses, but also widely used in the drive train of ultra-heavy-duty dump trucks. The transmission component of the dynamic hydraulic continuously variable transmission is the torque converter reversal.

Cars are already a must-have tool for everyone to get around. Of course, automotive knowledge is essential. In order to make it easier for everyone to understand this knowledge, today, Bian Xiao will introduce you to the problem of how the gearbox works. Interested friends can learn about it, it may be helpful to you.

The gears on the output shaft are driven by the gears on the output shaft. When the pinion drives the pinion, the speed decreases and the torque increases (so the start is basically low); When the pinion drives the pinion, the speed increases and the torque decreases. Classification of gearboxes:

Variable gearbox: Continuously variable gearbox is one of the most widely used. It is geared and has several fixed ratios.

Depending on the type of gear train used, there are two types of geartrains: shaft-fixed gearboxes (normal gearboxes) and shaft-rotary gearboxes (planetary gearboxes). The transmission ratio of the general car and light and medium duty truck transmissions has 3-5 forward gears and 1 reverse gear, while in the combination transmission used for heavy trucks, there are more gears. The so-called gears of the gearbox refer to its forward gears.

Continuously variable speed: Continuously variable speed refers to the transmission system that can continuously obtain any transmission ratio in the transmission range. Thanks to the continuously variable speed, the best possible match of the drivetrain to the engine conditions can be obtained.

Frequently encountered CVTs include hydromechanical CVTs and metal belt CVTs. Integrated gearbox: An integrated gearbox refers to a hydromechanical gearbox consisting of a hydraulic torque converter and a geared continuously variable gearbox.

Its transmission ratio, which can be continuously varied in several intermittent ranges between the maximum and minimum values, is now widely used.

1) Change the transmission ratio, expand the torque and speed range of the drive wheels to adapt to the frequently changing driving conditions, and make the engine work under favorable conditions (higher power and lower fuel consumption) at the same time;

2) With the same direction of engine rotation, the car can drive backwards;

3) With the help of neutral gear, the power transmission is interrupted, so that the engine starts and shifts, which is convenient for the gearbox to shift gears or carry out power output.

4) The gearbox is composed of a variable speed transmission mechanism and a control mechanism. If necessary, a power take-off can also be installed. There are two ways to classify it: according to the change in the gear ratio and according to the mode of operation.