In the automobile market, the choice of gearbox has always been the focus of consumers’ attention. As two mainstream transmission types, DCT (powershift) and AT (Automatic Transmission) have their own advantages and disadvantages. So, how to choose? This article will give you a detailed analysis from many aspects.

First, understand the basic principles of DCT and AT.

The core principle of DCT, namely powershift, is to split the manual gear into base gear and even gear, and then equip two clutches to drive them respectively. This design makes the shift speed faster and the power output more direct. AT, the automatic transmission, automatically shifts gears through the hydraulic torque converter and multiple pairs of planetary gear sets, making driving more convenient.

Second, the size and transmission efficiency comparison

In terms of size, DCT has obvious advantages Take ZF’s 9AT as an example, its length is 521 mm, while Volkswagen’s DK500 powershift is only 400 mm.. This means that in the same space, DCT is easier to arrange and provides more possibilities for vehicle design.

In terms of transmission efficiency, DCT also performed well. The transmission efficiency of dry powershift is about 90%-95%, which is close to manual gear. The wet powershift is slightly lower, accounting for 86%-92%. The transmission efficiency of AT transmission is generally in the range of 82%-90%. This means that under the same conditions, DCT can give full play to the power of the engine.

Third, driving experience and fuel consumption performance

DCT has fast shifting speed and direct power output, which brings more radical driving experience to drivers. At the same time, because of its high transmission efficiency, DCT is also relatively good in fuel consumption performance. AT is famous for its stability and smoothness, which is suitable for drivers who pay attention to comfort and convenience.

Fourth, reliability and maintenance costs

Regarding reliability, DCT and AT have their own advantages. As long as the heat dissipation problem of DCT is solved, its performance is better than that of AT in all aspects. However, in practical use, AT is trusted because of its mature and stable structure. In terms of maintenance cost, due to the complex structure of AT, once a fault occurs, the maintenance cost is relatively high; DCT, on the other hand, is relatively simple and has low maintenance cost.

5. How to judge whether the gearbox matches well or not?

When choosing a car, it is very important to judge whether the gearbox matches well or not. You can experience the shifting logic, frustration and noise of the gearbox through the test drive. A good gearbox should have smooth shifting process, low sense of frustration and good NVH performance.

VI. Suggestions on product positioning and selection

In the automobile market, different types and different price models are often equipped with different types of gearboxes. Generally speaking, high-end models prefer to use AT gearbox to reflect their quality and stability; The models that pursue sports style and cost performance are more likely to choose DCT gearbox. Therefore, when choosing, you need to make a decision according to your actual needs and budget.

To sum up, DCT and AT have their own advantages, and which gearbox to choose depends on your personal preferences, driving habits and actual needs. If you pursue aggressive driving experience and high fuel consumption performance, DCT is undoubtedly a better choice; And if you pay attention to comfort and convenience, then AT is more suitable for you. When making a decision, please be sure to fully understand the advantages and disadvantages of various gearboxes and weigh them according to your actual situation.

　Netcom news　 Mass production is off the assembly line and is expected to be officially listed in September. As the second mass production of the brand, the new car still continues the futuristic design language and smoother hatchback design. In addition, the car is equipped with intelligent AI pixel headlights and voice functions inside and outside the car, and it is also equipped with the first pure visual high-order intelligent driving technology in China. In terms of power, Extreme Yue 07 provides single-motor and double-motor power options.

In terms of appearance, Extreme Yue 07 still continues the design language with a sense of futuristic technology. The closed grille on the front face with penetrating light strips and sharp headlights on both sides are full of visual impact. At the same time, the car is also equipped with the largest "clamshell cover" in the world’s mass production models, as well as intelligent AI pixel headlights and voice functions inside and outside the car. The drag coefficient of the whole car is only 0.198Cd.

The side shape of the new car is smooth, and it adopts a very dynamic hatchback design. The slightly downward sloping roof line combined with the large-size five-spoke low wind resistance rim is full of movement. In addition, the car adopts electric induction door without door handle, which can further optimize the aerodynamic performance of the vehicle. In the rear part, the Extreme Yue 07 adopts the popular through LED taillight group design, and is also equipped with a liftable sports tail.

The interior of the new car adopts a simple design style full of science and technology, and is equipped with an integrated three-screen system integrating instruments, central control screens and entertainment screens, and a novel half-width multifunctional steering wheel. At the same time, the Extreme Yue 07 will also be equipped with integrated seats, a liftable sound system and an entertainment screen for the rear passengers, and it will also be equipped with atmosphere lights at the multi-function steering wheel and the central armrest to create a more futuristic cockpit atmosphere.

In terms of body size, the length, width and height of the new car are 4953/1989/1475mm and the wheelbase is 3013 mm. At the same time, Extreme Yue 07 also provides a half steering wheel, different types of brake calipers and brake discs as options. In terms of power, the car offers single-motor and double-motor power options. Among them, the maximum output power of the single motor version is 200 kW, and the maximum power of the front and rear motors of the double motor version is 200 kW.

(Photo/Text &nbsp Netcom &nbsp Zhang Xiaoyi)

Yes, BYD Seal EV has sentry mode. This function is mainly used for vehicle safety protection and theft prevention. When the vehicle is stationary, if abnormal behavior or illegal intrusion is detected around it, the vehicle will automatically take photos and videos and send an alarm to remind the owner. At the same time, the vehicle will automatically lock and start the anti-collision system to prevent further danger.

　　The launching ceremony of biodiesel (B5) made from kitchen waste oil in China Petrochemical Gas Station was recently held in Zhuanghang Gas Station, Fengxian District, Shanghai.

　　Xu Kunlin, deputy mayor of Shanghai, said that the start-up of the pilot project of adding kitchen waste oil to biodiesel B5 at Sinopec gas station is of great significance, which indicates that the "last mile" of resource utilization of kitchen waste oil in this city is about to get through. He demanded that all relevant units continue to deepen the pilot work, oil supply enterprises should ensure the quality of oil products, and relevant government departments should further strengthen the division of labor and cooperation, actively serve enterprises, and lay a solid foundation for the promotion of the whole city next year.

　　Zuo Xingkai, Chairman and Party Secretary of China Petrochemical Shanghai Petroleum Company, said that the "normalization" of biodiesel applied to vehicles can not only eliminate the safety risk of waste oil returning to the dining table, but also help to reduce urban pollution, which is a major event benefiting the country and the people. Shanghai Petroleum has a great responsibility and a glorious mission to get this pilot promotion opportunity, and will do its best to do this low-carbon environmental protection project.

　　At present, Shanghai Petroleum has chosen two gas stations as pilot stations to fill biodiesel for the city’s transportation system and vehicles in specific industries. After a period of operation, it will be evaluated and then gradually opened to social vehicles. During the pilot period, the retail price of B5 biodiesel is 95% lower than that of vehicle diesel, with a discount of 0.30 yuan/liter, which encourages more social vehicles to use biodiesel.

　　It is reported that Shanghai has made it clear that the kitchen waste oil collected by the whole city will be given priority to the bus pilot project. As long as conditions permit, about 30,000 to 40,000 tons of kitchen waste oil produced in Shanghai can be transported to designated units to produce biodiesel. In addition, Shanghai promulgated the Emergency Support Measures for the Collection, Transportation and Disposal of Biodiesel Made from Waste Kitchen Oils, which requires that in case of market failure, the relevant disposal enterprises should be subsidized to ensure their normal operation.

　

[car home Cangzhou Preferential Promotion Channel] Recently, preferential activities in Cangzhou area are under way, and the maximum amount of preferential treatment can be 15,000 yuan. At present, the minimum starting price of Xingyue L has dropped to 122,200 yuan. If you are interested in this car, you may wish to click "Check the price of the car" in the quotation form to get a higher discount.

The design of Xingyue L is full of modernity and strength. The front face adopts a large air intake grille with sharp headlights, and the overall lines are simple and atmospheric. The side lines of the car body are smooth, and the roof lines are tilted backwards, creating a dynamic sports style. The tail design is simple and generous, and the taillight has a unique shape, which echoes the headlights and gives a steady and dynamic visual effect as a whole.

Xingyue L has a length, width and height of 4770*1895*1689mm and a wheelbase of 2845mm, showing spacious interior space and excellent space utilization. The lines on the side of the car are smooth, extending from the front fender to the rear, outlining a dynamic outline. With 245/45 R20 tires and dynamic rim design, it shows the strength and sporty temperament of the vehicle.

The interior design of Xingyue L is exquisite and elegant, with black and beige as the main colors, creating a luxurious and comfortable atmosphere. The steering wheel is made of leather, which is comfortable to hold and supports manual adjustment up and down and back and forth to meet the needs of different drivers. The center console is equipped with a 12.3-inch LCD screen, which supports the voice recognition control of multimedia system, navigation, telephone, air conditioner and skylight, and improves the convenience of driving. In addition, the car is also equipped with USB and Type-C interfaces to facilitate the charging needs of front and rear passengers. The seat is made of imitation leather. The main driver’s seat has the functions of front and rear adjustment, backrest adjustment, height adjustment and lumbar support, supports heating, ventilation and massage, and is equipped with headrest speakers. The co-pilot seat also has the functions of front and rear adjustment and backrest adjustment, and the front row is also equipped with mobile phone wireless charging function. The electric seat memory function allows the driver and co-pilot passengers to easily save and recall their favorite seat positions. The second row of seats has backrest adjustment function, and the rear seats support proportional reclining, providing flexible spatial layout.

Xingyue L is equipped with a 2.0T engine, with a maximum power of 175kW and a maximum torque of 350 N m. It adopts L4 layout and cooperates with an 8-speed automatic manual transmission, providing excellent power performance and smooth shifting experience for drivers.

The owner of car home said, "It has been nearly two months since I bought the Star Yue L, and I feel very good driving during this time. I chose Xingyue L as a new car mainly because of its calm appearance, large space, good ride comfort and reliable body safety. "

[car home Jincheng Preferential Promotion Channel] Recently, preferential activities are being carried out in Jincheng area, with the highest preferential range reaching 38,000 yuan and the lowest starting price of 431,900 yuan. If you are interested in this model, you may wish to click "Check the car price" in the quotation form to get a higher discount.

The exterior design of BMW i4 shows the perfect integration of modern technology and classic aesthetics. The front part adopts an integrated design style, and the iconic kidney-shaped air intake grille has been redesigned, which is flatter and has a unique closed treatment for electric vehicles, demonstrating its unique identity. The smart LED headlights on both sides of the front of the car are sharp in shape, which not only improves the recognition of the whole car, but also gives the vehicle a dynamic visual impact. On the whole, the design of BMW i4 not only embodies the traditional essence of the brand, but also incorporates innovative elements, leaving a deep impression on people.

The body size of BMW i4 is 4785*1852*1455mm, the wheelbase is 2856mm, and the car side lines are smooth, with a front track of 1601mm and a rear track of 1630 mm.. Equipped with 18-inch rims, the front tyre size is 245/45 R18, and the rear tyre size is 255/45 R18. The rim design style is fashionable and sporty, which adds a sense of movement and stability to the vehicle.

The interior design of BMW i4 pays attention to the combination of luxury and technology, and adopts a modern and elegant style. The steering wheel is made of leather, which provides a good grip and supports manual adjustment up and down and back and forth to adapt to different driving postures. The central control screen has a size of 14.9 inches, equipped with advanced multimedia system, navigation, telephone and voice recognition control system of air conditioning, which brings intelligent car experience to drivers. In terms of seats, i4 offers a variety of material choices, including imitation leather, genuine leather and leather /Alcantara mix, ensuring comfort and luxury. The front seat has heating function and supports multi-directional adjustment, including front and rear adjustment, backrest adjustment, height adjustment, leg rest adjustment and lumbar support adjustment. At the same time, the driver’s seat is also equipped with electric seat memory function, so that the driver can easily save and recall personal settings. In addition, the car is also equipped with a mobile phone wireless charging function, as well as a number of USB and Type-C interfaces to meet the charging and data transmission needs of modern users.

The BMW i4 is equipped with a powerful electric engine with a maximum power of 210kW and a maximum torque of 400 Nm. This power combination makes the BMW i4 have excellent acceleration performance and driving pleasure.

The owner of car home said: "The configuration parameters of Series I’s 3, 5 and X3 are almost the same, except that the shell has been changed. I want to buy the I4 for more than 100,000 yuan. Of course, it is still imported, so there is no need to do such a thing as buying it home and deducting the label. At first glance, the big nostrils are not mediocre. When I drive out, people are guessing at 600,000. I am sorry. "