Common sense of transmission parameters, what are the common types of gearbox?

Go to the library and look for it, and find a lot of it.

There is a DSG dual-clutch transmission and a Tib-Tronic transmission. Volkswagen does not currently use DSG in SUV models, and luxury cars such as the Phaeton do not have a large displacement. DSG transmission with car model:

Pologti, Lavida, Touran, Passat, Octavia, Bora, Sutar, Magotan , CC, Golf GTI, Scirocco EOS Beetle.

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.

Toyota: Mainly divided into A series (longitudinal transmission): A760E, A761, A750F, A960E

U series (transverse transmission): U241E, U250E, U441E Honda: Parallel shaft transmission:

Baxa 98, MR4A, BCLA Nissan: RE5R05A, RS5F50A, REOF10A (Infinitely Variable Transmission), Reof11A (Infinitely Variable Transmission).

Volkswagen Audi: 01J (Continuously variable V (5HP L (6HP19A G, 02E (Wet Dual-Clutch AM (Dry Dual-Clutch N, 01M Hyundai: A6MF1, A6MF2 GM:

4t40e
t65e、6t40 e、6t45e

Mercedes Benz9 Peugeot: AL4

Common transmission types are manual transmission and automatic transmission, and automatic transmission has CVT transmission, AT transmission, AMT transmission, dual-clutch transmission, etc. The main role of the gearbox in the car is to amplify the torque, regulate the speed, reverse, interrupt the power, etc. The following is the introduction of CVT transmission, AT transmission, AMT transmission, dual-clutch transmission:

1. AT gearbox: the scientific name is hydraulic automatic gearbox, from the 4AT gearbox in the early Biyin period to the current 9AT gearbox, the advantages of AT gearbox are obvious, and the power is more direct. 2. CVT gearbox:

The scientific name is mechanical continuously variable automatic transmission, which is mainly represented by Japanese cars, and most models such as Honda and Nissan use CVT transmissions. The chain segment characteristics of the CVT gearbox are obvious, because the gear ratio is not an intermittent point, but a series of continuous values, so the ride performance is very good, and the fuel economy is also more prominent. 3. AMT gearbox:

The abbreviation of electronically controlled mechanical automatic transmission, AMT gearbox is a compromise product of MT gearbox and AT gearbox, the advantage is that the production cost is relatively low, and the operation is more convenient than that of manual gearbox. 4. Dual-clutch transmission is referred to as DCT: Dual-clutch as the name suggests is the use of two sets of clutches, through the alternating work of the two sets of clutches, to achieve the effect of backlash-free shifting, and is divided into dry dual-clutch, and wet dual-clutch, dual-clutch transmission, fast shift speed, small power loss during shifting, and good performance of fuel through the shed.

5-speed manual: It has a manual transmission with 5 gears.

4-speed automatic transmission: A regular automatic transmission with 4 gears.

Automatic 6-speed manual transmission: A regular automatic transmission with 6 gears and manual gear shifting.

5-speed AMT: A mechanical automatic transmission with 5 gears.

7-speed dual-clutch transmission: Dual-clutch transmission with 7 gears.

7-speed CVT automatic manual transmission: It can simulate a continuously variable transmission with 7 gears.

7-speed ISR gearbox: The chain has a 7-speed ISR gearbox.

Electric vehicle single-speed transmission: fixed gear ratio transmission.

Millions of car purchase subsidies.

A manual transmission is better. 1. The manual transmission is more fun to drive than the automatic transmission.

2. The mechanical structure is relatively simple and the failure rate is low.

3. The price of the manual transmission of the same model is lower than that of the automatic transmission.

4. Strong adaptability, even the gearbox used by tanks.

Manual transmission, large output torque, cheap and reliable, high flammability, later maintenance and repair is also the cheapest one, at the same time, because it does not use any electronic system, it belongs to the mechanical structure, the fault is very low, in 1886, Carl Benz invented the ancestor of the car Daimler Mercedes-Benz No. 1. But back then, the car was not equipped with a gearbox differential lift, there was only a final gearbox, so the car could not reverse, it could only go all the way forward, and there was no gear, which sounded very primitive.

Three years later, in 1889, Peugeot invented the world's first gearbox. Its workmanship is very rough and there are only 2 gears, and even the clutch works very roughly, requiring the driver to accurately control the engine speed and speed to achieve the correct gear shift, so in that era, the manual transmission can be regarded as an old driver.

Today, transmissions have become more and more intelligent and advanced, and even automatic transmissions with 8 gears on ordinary civilian vehicles have become mainstream.

The types of car transmissions are as follows:

1. AT gearbox: It is an automatic gearbox, which is the most widely used automatic transmission technology in the domestic market. The biggest advantage of AT technology is that it is the most mature and stable of the three automatic transmissions. The biggest drawback of an AT gearbox is the frustration.

2. CVT gearbox: CVT gearbox technology, also known as continuously variable transmission. It can be understood as a gearbox that does not have a clear gear, unlike other gearboxes that require a gear jump.

Due to the continuous change of the transmission ratio can be achieved by defeating the CVT, the driving process of the car is very smooth, there will be no frustration before the draft, the power loss is less, and the natural fuel consumption is also very low.

3. Dual-clutch transmission (DCT): Dual-clutch transmission is a new transmission technology that has just developed into the family car market in recent years. Compared to the AT, it has shorter shift times and less power loss.

There are currently two main types of dual-clutch transmissions: dry and wet. However, the dry dual-clutch is easy to wear, and it is not suitable for the road conditions of urban traffic congestion in China at present, and frequent traffic jams will accelerate its wear and tear and shorten the life.

Whether it's automatic transmission fluid or manual transmission oil, it has a certain shelf life. When the car reaches a certain mileage or the maintenance period is up, the oil needs to be changed immediately. Because with the extension of use, the transmission oil will become dirty, the viscosity will decrease, and the transmission protection will not be good.

According to the viscosity classification, the viscosity of the national vehicle gear oil is divided into seven viscosity grades of 70W, 75W, 80W and 85W according to the SAE viscosity classification, of which "W" represents the winter use, and SAE70W, 75W, 80W and 85W are the slow attack of the winter oil. Without the "W" word, it is a non-winter oil, and 90 and 140 are summer oils. For example, "xxw xx" is a gear oil that can be used in winter and summer, and is classified according to the kinematic viscosity at 100 hours.

SAE75W-90, SAE85W-90 and 85W-140 are mainly used in the market. These oils are all-purpose oils in both winter and summer.

According to the composition characteristics and functional requirements, China's automotive gear oil can be divided into CLC ordinary vehicle gear oil, CLD medium load vehicle gear oil and CLE heavy-duty wheel gear oil, which are equivalent to GL-3, GL-4 and GL-5 of API classification, respectively. Among them, CLC is used for the manual transmission of spiral bevel gears and the drive of Zensun Bridge.

CLD is used in manual transmissions, hypoid gears of drive shafts with spiral bevel gears and undemanding conditions. CLE is used as a transaxle for hypoid gears and other gears with demanding conditions.

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