Double ion BTC

1.

BTC (business to customer)

also known as B2C, e-commerce according to a classification of trading partners, that is, commercial institutions to consumers of e-commerce. This form of e-commerce is generally based on the network retail instry, mainly with the help of the Internet to carry out online sales activities

B2C mode is the earliest e-commerce mode in China, marked by the formal operation of 8848 online mall. B2C means that enterprises provide consumers with a new shopping environment through the Internet - online store, where consumers shop online and pay online

because this mode saves the time and space of customers and enterprises, and greatly improves the transaction efficiency, especially for busy office workers, this mode can save valuable time

two BTB (business to business)

also known as B2B, refers to a kind of Internet market, which is the marketing relationship between enterprises. It combines the intranet with customers through B2B website, and provides better service for customers through the rapid response of the network, so as to promote the business development of enterprises. In recent years, B2B develops rapidly and tends to be mature

three otos (online to offline)

also known as o2o, namely "online to offline". The core of the business model of oto is very simple, which is to bring online consumers to real stores, pay online to buy offline goods and services, and then enjoy offline services

extended materials:

e-commerce is a business activity with information network technology as the means and commodity exchange as the center; It can also be understood as the activities of trading activities and related services in the form of electronic transactions on the Internet, intranet and value-added network. It is the electronization, networking and informatization of all aspects of traditional business activities

e-commerce usually refers to a wide range of business and trade activities all over the world, in the Internet open network environment, based on Browser / server application mode,

buyers and sellers do not meet each other to carry out a variety of business activities, to achieve consumer online shopping, online transactions and online electronic payment between merchants, as well as a variety of business activities, trading activities Financial activities and related integrated service activities are a new business operation mode

governments, scholars and business people in various countries have given many different definitions according to their own status and different angles and degrees of participation in e-commerce. E-commerce is divided into ABC, B2B, B2C, C2C, B2M, M2C, B2A (B2G), C2A (C2G), o2o, etc

At the same time, network marketing is also a proct of e-commerce, and for network marketing, it is necessary to make a good network marketing plan before doing it, so as to facilitate the implementation of the plan

since October 1, 2018, the Ministry of finance, the State Administration of Taxation, the Ministry of Commerce and the General Administration of customs have jointly issued the new regulations on tax exemption for e-commerce export enterprises in the comprehensive pilot zone of cross border e-commerce

2.

Dual clutch transmission (DCT) is actually composed of two sets of manual transmission

DCT has the characteristics of fast shift and fast upshift, which is generally used in high-end models or super running, such as PDK al clutch gearbox of Porsche. The cost of double clutch is very high, and it is not the best choice for daily commuting. Because the al clutch transmission is heavier than the traditional manual transmission, the low gear setback of many models of al clutch transmission will be very serious

3. DSG: the Chinese surface meaning is & quot; Direct shift transmission;, It's a popular term
DCT: double clutch transmission is short for DCT, because it has two sets of clutches, so it is called & quot; Dual clutch transmission
the difference between DSG and DCT: the electronic mole of gear shifting is different. The 6-speed one is from Borg Warner, USA. In Borg Warner, it is called DCT transmission. Later, all vehicle manufacturers, because of the need of publicity, called DCT gearbox
and DSG is the name of Volkswagen, because Volkswagen also has a 7-speed gearbox. In Volkswagen, the 7-speed DSG is called DQ200, while the 6-speed DSG is called dq250, and dq250 is Borg Warner's 6-speed DCT< To sum up, DSG generally refers to Volkswagen's 7-speed, while DCT generally refers to all 6-speed.

4. The double clutch is corresponding to the ordinary clutch, but VW has been committed to the research of more efficient and more environmentally friendly technology concept to proce the VW DSG double clutch transmission
the working principle in China is as follows
clutch 1 is responsible for 1st, 3rd, 5th and reverse gears, while clutch 2 is responsible for 2nd, 4th and 6th gears; When the odd gear is engaged, the clutch 1 is engaged, the input shaft 1 works, the clutch 2 is disengaged, and the input shaft 2 does not work. That is to say, in the working process of DSG transmission, there are always two gears that are engaged, one is working, and the other is ready for the next step; Jump downshift can be carried out in manual mode: if the starting gear and the final gear are controlled by the same clutch, the gear controlled by another clutch will be changed. If the starting gear and the final gear are not controlled by the same clutch, the jump downshift can be carried out directly

but in my opinion, the al clutch transmission is not as good as CVT endless transmission. Although the al clutch transmission also solves the frustration of shifting and the smoothness of acceleration, the cost of the al clutch is too high, the structure is too complex, and the weight is also the largest one. The maintenance cost of the maintenance car is greatly increased, This is not as good as CVT, but CVT is also defective, because the torque of CVT gearbox with design structure can not be too high, if it exceeds the maximum limit of 300N. M, it is very likely to cause damage to the pressure steel belt, or cause slippage to the chasing plate and pressure steel belt, resulting in lack of power and other reasons.

5. To put it simply, there are two clutch separators. If you start driving in first gear, the other set of gears will now wait in second gear. When driving in second gear, the other set will wait in third gear. and so on. How to operate is actually the same as the ordinary automatic car.

6. In short, double clutch gearbox is what we call semi-automatic gearbox. It is a combination between automatic gearbox and manual gearbox. The transmission gear adopts the structure of manual gearbox, and the control system adopts the system of automatic gearbox. The biggest feature is that it uses two sets of clutches, one for even gear and the other for odd gear. So it's called double clutch for short.

7. DSG is called al clutch transmission. The reason is that there are two automatic controlled clutches in the transmission. In a certain gear, clutch 1 is engaged, and one set of gears is engaged to output power. When the gear is close to shifting, the next set of gears has been pre selected, while the associated clutch 2 is still in the state of separation; When shifting to the next gear, the clutch 1 in working state is separated, and the gear in use is separated from the power. At the same time, the clutch 2 is engaged with the pre selected gear to enter the next gear. During the whole shift, the two groups of clutch work in turn to ensure that at least one group of gears is outputting power, so that the power does not appear discontinuous

8. The al clutch system transmission is a whole, with six gears. The clutch and the transmission are assembled in the same mechanism, and the two clutches work together. This is a good analogy. A car has two sets of clutches. The driver controls one and the assistant driver controls the other. When the driver is engaged in the first gear and releases the clutch pedal for starting, the assistant driver also engages in the second gear in advance but presses the clutch pedal; When the speed is up and ready to shift, while the driver is pressing the clutch pedal, the assistant driver releases the clutch pedal, and the second gear starts to work. In this way, the moment when the gear is vacant is omitted, and the power transmission is continuous, which is a bit like a relay race. Double clutch system, two sets of clutch transmission system, through computer control coordination work.

9. Hello, there are a large number of people who are consulting at present, and the reply may not be timely. If it is a vehicle fault problem, it is recommended to use the computer to detect the specific cause of the fault first, and search "auto master" to consult the vehicle problem at any time and answer it online 24 hours a day.