This article gives you an easy-to-understand understanding.
First, MT (manual gearbox)
1. Carrying models
Representative models:
Manual gearbox is our common taxis, driving school coaches, buses and trucks. In our daily family cars, manual gears are mostly low-end models or low-end models in mid-to high-end models, and its application is very extensive.
2. Advantages and disadvantages
Advantages: Its advantages are mainly mature technology, high stability, convenient maintenance and high driving pleasure..If you are an old driver with skilled driving skills, you will find that the speed of manual transmission is much faster than that of automatic transmission with the same displacement.
?Disadvantages: the operation is complicated, and beginners are prone to flameout, frustration, low gear, high gear and low gear when operating.
3. Use and maintenance
We commonly have four-speed, five-speed and six-speed gearboxes, which consist of four or six forward gears and one reverse gear.
In terms of use and maintenance, the cost of manual transmission is lower than other types.
The failure rate and maintenance cost of manual gearboxes are also lower than those of other gearboxes.
4. Market trends
People’s living habits are increasingly dependent on technology and artificial intelligence. In the ranks of family cars, manual gears will be gradually replaced by automatic gears.
Second, AT (automatic gearbox)
1. Carrying models
Representative models:
At present, automatic gearbox is one of the most common gearboxes in our life.
2. Advantages and disadvantages
?Advantages: stable technology and convenient operation.
?Disadvantages: Compared with other gearboxes, AT gearboxes are expensive to manufacture and difficult to develop.
3. Use and maintenance
AT gearbox gears are divided into:
P: Parking gear, used when parking.
R: reverse gear, used when reversing.
N: neutral, used when waiting for traffic lights or repairing vehicles.
D: Forward gear, used during normal driving.
S: Sport mode, used when overtaking and accelerating.
L: Low gear, that is, 1st gear. When the vehicle is engaged in L gear, it can be locked into 1st gear, and it cannot be upgraded to high gear. It is suitable for climbing or slowing down downhill.
2/3: High-speed engine brake gear, which is equivalent to shifting into 2nd or 3rd gear to lock the vehicle to this gear. It is also suitable for use on ramps or complex roads.
The general oil change cycle of AT gearbox is 2 years or 40,000-60,000 kilometers.
It is recommended to replace the old oil by dynamic oil change, which can fully circulate the old oil and discharge it cleanly. However, the cost is slightly higher.
4. Market trends
AT gearbox with low failure rate is very popular among consumers.
It is still the mainstream in automobile gearbox.
Third, AMT (semi-automatic gearbox)
1. Carrying models
Representative model: Chery QQ3
In China, it is mostly used in A0-class vehicles and heavy-duty trucks.
2. Advantages and disadvantages
?:Simple structure, low cost and convenient maintenance.
?: serious sense of frustration and poor sense of control.
3. Use and maintenance
Driving control is easier than manual transmission.
+upshift
-Downshift
4. Market trends
AMT gearbox is commonly used in medium and large buses and heavy trucks.
Fourth, DCT ()
1. Carrying models
Representative models: Porsche 911,
Dual clutch gearbox first appeared in sports cars and performance cars, and then gradually appeared in family cars.
Different manufacturers have different names.
the public
Audi S-tronic
Porsche PDK
2. Advantages and disadvantages
?Optimize the problem of final power cut-off during gear shifting to achieve the problem of fast gear shifting. High transmission efficiency and improved fuel economy.
?The gearbox is difficult to dissipate heat, and some models have obvious frustration when shifting gears, so manufacturers have high requirements on the accuracy of manufacturing and processing.
3. Use and maintenance
The operating gear is the same as AT gearbox.
The dual-clutch gearbox, whether it is wet or wet, needs no maintenance for life from the structural design of the manufacturer, except for man-made damage.
If a 4S shop or a garage asks you to change the transmission oil and filter element, you must remember that it is a trick to cheat people and cheat money. I hope all car owners will keep it in mind.
4. Market trends
Major manufacturers are constantly optimizing the frustration problem of dual-clutch gearbox. In some high-end models equipped with dual-clutch, the frustration feeling is very small. While enjoying the slight frustration feeling, they can have an extremely fast shift acceleration experience, plus the design of life-long maintenance-free. These are the competitive advantages of dual-clutch gearbox. The development prospect is the best after breaking technical barriers.
V. CVT (Continuously Variable Transmission)
1. Carrying models
Representative model: Nissan
It is the originator of CVT technology, but Nissan is the best one to apply it.
2. Advantages and disadvantages
?Excellent ride comfort, almost zero frustration and good fuel economy.
?: Weak power, limited torque output and complicated maintenance.
3. Use and maintenance
The operating gear is the same as AT gearbox.
The maintenance cycle of CVT gearbox is slightly longer than that of AT gearbox, generally 2/3 years or 50,000-80,000 kilometers.
4. Market trends
Nowadays, the new technology has solved the problem of short service life of CVT in the past. By adopting high-strength and high-quality materials and precision manufacturing technology, the quality and reliability are improved, which greatly improves the service life of CVT gearbox.
However, the power is weak, the torque output is limited, the maintenance is complicated, and some important parts inside the CVT gearbox cannot be processed and manufactured in China. In addition, the era of turbine engines is prevalent, which makes the CVT gearbox have great limitations.
Some of the five common gearboxes mentioned above are simple in structure and easy to maintain, some speed up rapidly, some have high fuel economy, and some are smooth and smooth. Which one do you like? Welcome to comment in the comment area.