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　　5G commercial "landing" will be over one year. Guangzhou Daily all-media reporter Yang Yaozhen photo

　　Guangjing observation

　　Text/Guangzhou Daily All-Media Reporter Wen Jing, Zhang Lu

　　Ms. He, a citizen, has recently received frequent calls from operators’ customer service to promote 5G packages. "The tariff package will cost more than 100 yuan, so I will not consider raising 5G for the time being." The reporter visited the market and learned that for the first anniversary of the official "landing", the "overwhelming" promotion of the market side is in stark contrast to the rational treatment of some consumers. "Sales say that only when you buy a 5G mobile phone and upgrade the package can you get the operator’s subsidy." Aunt Liang just bought a 500-yuan 5G mobile phone for her son in high school, but she said that if there is no subsidy of several hundred yuan, she will still choose a 4G mobile phone.

　　The survey found that the lack of choice of 5G packages, the high cost, the lack of low-end mobile phones and the lack of "killer" applications have become the embarrassment and helplessness for consumers to transition from 4G to 5G.

　　Fees:

　　The price of 5G package is relatively high.

　　"My monthly mobile phone package fee is 88 yuan/month, which includes 30G traffic. There is WiFi in my office and home, and the monthly traffic is inexhaustible. Sometimes I open hotspots to share with my family." Miss He, a citizen, received customer service calls from operators from time to time in recent months, but she said that she couldn’t figure out why she had to upgrade to 5G package.

　　Although operators have recently launched a variety of 5G packages, 5G packages are still "expensive" in comparison. For example, the mobile 5G package, the cheapest is 89 yuan/month; The lowest 5G package for telecom is 129 yuan/month; Unicom’s cheapest 5G package is also 129 yuan/month. In other words, now a new 5G package will cost at least 100~130 yuan per month.

　　According to the Survey Report on the Experience and Attitude of 5G Mobile Phone Users in China in 2020 released by a third party organization, the tariff of 5G mobile phone communication package is too high, and 49.2% of the interviewed 5G mobile phone users think that the current package price is too high, while 44.8% of the interviewed non-5G mobile phone users think that the high price of 5G communication package is the reason why they don’t buy 5G mobile phones.

　　Embarrassed:

　　Lack of phenomenal applications affects the popularity of 5 G.

　　According to the data of ICT Institute, in September, 26 new models of 5G mobile phones were listed in the domestic market, accounting for 44.8% of the number of new models listed in the same period, and the shipment volume was 13.99 million units, accounting for 60.0% of the mobile phone shipments in the same period, which has reached 60% for four consecutive months.

　　For the entire domestic smart phone market, the development of 5G mobile phones can be described as "outstanding". Domestic mainstream manufacturers Huawei, vivo, OPPO, Xiaomi, Glory, etc. have covered the 5G mobile phone market at different price points, and there are models to choose from from the high-end price of more than 5,000 yuan to the low-end price of 1,500 yuan.

　　"One of the main factors affecting the popularity of 5G is the lack of phenomenal applications," the reporter said in interviews with many insiders. Looking back at the transition from 3G to 4G, consumers really feel the need to change 4G mobile phones. WeChat "grabbing red packets" is one of them, as well as short videos, live broadcasts, mobile games, take-out and mobile payment.

　　In the face of the new 5G, industry insiders say that there are opportunities for phenomenal applications in private cloud, ultra-high-definition live broadcast, large-capacity video and the increasingly popular Vlog. In April this year, the three operators jointly released the White Paper on 5G Information. Will the 5G information created by operators "run out" in the next 5G era? According to the analysis, 5G information will become the first domestic and popular 5G application, which will create new market opportunities.

　　Expert:

　　Low-end terminals need to increase development efforts.

　　Compared with personal consumption, after a year of development, 5G presents another scene in the industry. According to the latest data, from January to August, 61,625 new 5G base stations were built in Guangdong. The number of 5G package users in the province reached 20.74 million, and a total of 98,613 5G base stations were built. Among them, Guangzhou 5G Industrial Park was approved as one of the first batch of 5G industrial parks in Guangdong Province.

　　According to industry experts, the important value of 5G network is to go out of the communication industry and apply it to thousands of industries, and the difficulty lies in how to combine it with the needs of the industry and provide power for the digitalization of the industry through innovative scene applications and operation modes.

　　Recently, Wu Hequan, an academician of China Academy of Engineering, mentioned in his keynote speech at the main forum of the IMT-2020(5G) conference that on the first anniversary of the commercialization of 5G, while seeing the achievements, we also need to face up to the existing problems such as immature technology, high operating cost and difficulty in digesting costs. The development of 5G is inseparable from innovation, and it also requires broader cooperation in the industrial chain. Wu Hequan pointed out that at present, there are not many varieties of mobile phones to choose from, and few of them are below 1,000 yuan. In the future, the demand for low-end terminals will be greater, and development efforts should be intensified. In the industry terminal, it is necessary to enrich industry modules and chips through cross-border cooperation with vertical industries, but the current cooperative business model is still unclear.

　　Reporter observation:

　　On November 1 last year, China’s 5G package was declared "landing". According to the latest data from the Ministry of Industry and Information Technology, China has opened a total of 690,000 5G base stations, with more than 160 million connected users. By the end of September, China has basically achieved 5G coverage in cities. According to the data disclosed by the basic operators, the combined number of 5G package users of China Mobile and China Telecom has reached 178 million.

　　In fact, after a year of popularization, the public’s awareness of 5G has improved, but most people are not willing to upgrade 5G, and it is generally believed that the current prices of 5G terminals and 5G packages are on the high side, so they choose to wait and see. Operators and terminal manufacturers should launch more low-priced versions of 5G tariff packages and more cost-effective 5G terminals, and increase application research and development in order to make consumers really willing to pay for 5G.

　　On the 9th, Chongyang Financial Research Institute of Renmin University of China, Taihe Think Tank and Haitu Guozhi released "America First" in Beijing? ! The research report "The Truth of American Anti-epidemic" is the first think tank report in the world to expose the truth of American anti-epidemic.

　　The full text of the report is about 23,000 words, including 20 parts, which refutes the absurdity of Bloomberg’s ranking of "the United States ranks first in the world in the fight against epidemic". The report concludes that the United States is well-deserved as the world’s first country that failed to fight the epidemic, the world’s first country that dumped the pot, the world’s first country that spread the epidemic, the world’s first country that tore apart politics, the world’s first country that abused money, the world’s first country that was in turmoil during the epidemic, the world’s first country that falsely reported information, and the world’s first country that traced back to terrorism.

　　Fight for the party but not for life.

　　American expert: This is a massacre.

　　The report believes that the American epidemic is entering the fourth wave of rising period.

　　Behind the number of cold infections and deaths is the domestic political struggle in the United States — — In particular, the partisan struggle highly politicized the epidemic and made the American people who "didn’t have to die" lose their lives. Under the double blow of virus and man-made disasters, the Covid-19 epidemic has not been effectively controlled so far, and the bones of more than 600,000 Americans killed by the epidemic are enough to pile up.American epidemiologist William Fogg believes that "this is a massacre"!

　　Anti-science and common sense.

　　Many questions are directed at the United States.

　　The report revealed thatThe American government’s anti-science and anti-common sense in epidemic prevention and control, policy measures, traceability investigation and other aspects is the direct reason why the United States has become a "failed country against epidemic".

　　By May 26th, 2020, about 38% of the false news about Covid-19 in English media mentioned Trump, "American President Trump may be the biggest promoter of false information in COVID-19".

　　The report also raised a number of questions:

　　Is COVID-19 the so-called unexplained "respiratory disease" or "white lung disease" that broke out in the United States in the second half of 2019?

　　What kind of research is being carried out in Fort Detrick and other biological laboratories in the United States? Is it related to coronavirus? How about the implementation of safety measures? Is it related to the origin of the global COVID-19 epidemic?

　　Saving the stock market doesn’t save lives.

　　Institutional constraints constitute the "bulk America" anti-epidemic pattern.

　　The report pointed out that,The federal system under the party struggle is mutually constrained and shirked, which constitutes the anti-epidemic pattern of "bulk America".

　　Saving the stock market doesn’t save people’s lives. The Federal Reserve has taken "extraordinary" measures to issue additional money, and the US stock market has soared since it hit a low point on March 23, 2020. From March 2020 to January 2021, the total wealth of more than 600 American billionaires increased from about $2.947 trillion to $4.085 trillion, an increase of 38.6%.

　　The Federal Reserve issued money indiscriminately, and it took the United States a year and a half to print nearly half of all dollars for more than 200 years. However, countries all over the world have no choice but to "take the blame" and bear the inflationary pressure, turbulent pressure and "bubble" pressure that they should not bear. This beggar-thy-neighbour approach has caused countries in the world suffering from the Covid-19 epidemic to encounter additional economic and social pressures besides the virus, and even brought about political conflicts and regional chaos.

　　Epidemic situation accelerates social tear

　　Conspiracy theory of virus origin intensifies racial bullying

　　The report pointed out that,The epidemic has intensified the tearing of American society. Poisonous conspiracy theories about the origin of Covid-19 have intensified the bullying and hatred towards Asians.In March 2021 alone, cases of Asian discrimination nearly doubled.

　　Social unrest can be called a "chronic disease" in the United States, and the COVID-19 epidemic served as an "amplifier". In 2021, the crime rate in the United States ranked first among developed countries, far higher than that in Britain, Canada, Spain and other countries, and also higher than that in many developing countries.

　　Destroy the global anti-epidemic wantonly

　　Breed traceable terrorism

　　The report believes that the United States is wantonly undermining the global fight against epidemic. As the world’s number one power, the United States has allowed the virus to spread, which has seriously worsened the epidemic situation in other countries.After the outbreak of the COVID-19 epidemic, more than 20 million American citizens still went abroad, and the United States has an unshirkable responsibility for the global spread of the epidemic.

　　Biden instructed the US intelligence department to provide a report on the source of the epidemic within 90 days. At the same time, many senior officials in the United States expressed their views on the source of the epidemic and created international disputes for no reason.However, regarding the doubts about the early spread of the domestic epidemic, the United States is secretive about the concerns of the international community.

　　COVID-19 vaccine exported by the United States only accounts for less than 1% of the vaccine production in the United States. Besides refusing international vaccine cooperation, the United States has also disrupted the international anti-epidemic order by "withdrawing from the group and rejoining the group".Compared with Covid-19, the more deadly "virus" is the traceable terrorism that is constantly breeding under the leadership of the United States.

　　CCTV News:The Central Meteorological Observatory issued a weather bulletin. It is estimated that there will be moderate to heavy rain in the central and western Yunnan and southeastern Tibet from the night of the 14th to the 15th, with heavy rain in the local area and sleet or snow in high-altitude mountainous areas. Details are as follows:

　　1. Moderate rain or heavy rain occurred in parts of Guangdong, Hainan and other places

　　During the day, moderate rain or heavy rain occurred in parts of southern Yunnan, southwestern Guangdong and southeastern Hainan Island, and local rainstorms (50-71 mm) occurred in Wanning and Qiongzhong, Hainan.

　　Second, the key weather forecast

　　1. There is still strong rainfall in Yunnan and other places.

　　From the night of 14th to 15th, there was moderate to heavy rain in central and western Yunnan and southeastern Tibet, with heavy rain in the local area and sleet or snow in high-altitude mountainous areas. In addition, from the 16th to the 17th, there were moderate to heavy rains and local heavy rains in southern Jianghuai, southern Jianghan, most of the south of the Yangtze River and northern South China. There are small to moderate rains in the south of Northeast China and eastern North China, accompanied by strong convective weather such as thunderstorms and strong winds.

　　2. There will be high temperature in parts of Huanghuai in North China.

　　From 15th to 17th, there was high temperature of 35℃ in southern Beijing, Tianjin, central and southern Hebei, central and western Henan, northern Shandong and other places, and the temperature in some parts of northern Shandong could reach above 37℃.

　　Third, the specific forecast for the next three days

　　From 20: 00 on May 14th to 20: 00 on May 15th,There are moderate to heavy rains in parts of southeastern Tibet, central and western Yunnan, and southwestern Sichuan. Among them, there are heavy rains (50-70 mm) in parts of southeastern Tibet and western Yunnan. There are 4 ~ 6 winds in parts of northeastern Inner Mongolia and Hexi in Gansu (see Figure 1).

Figure 1 National Precipitation Forecast Chart (20: 00 May 14-20: 00 May 15)

　　From 20: 00 on May 15th to 20: 00 on May 16th,There are moderate to heavy rains in parts of eastern Jianghan, northern Jiangnan, southeastern Southwest and southern Tibet, among which there are heavy rains (50-70 mm) in parts of eastern and southern Hubei and northern Hunan. There are 4 ~ 5 winds in parts of southeastern and northwestern Inner Mongolia, southwestern Heilongjiang, northern Zhejiang and southeastern Yunnan (see Figure 2).

Figure 2 National Precipitation Forecast Chart (20: 00 May 15-20: 00 May 16)

　　From 20: 00 on May 16th to 20: 00 on May 17th,There are moderate to heavy rains in the eastern and western parts of Northeast China, the eastern and western parts of Jianghuai, the northern and central parts of Jiangnan and southern Tibet, among which there are heavy rains (50-60 mm) in parts of southern Jiangsu, Shanghai and northern Zhejiang (see Figure 3).

Figure 3 National Precipitation Forecast Chart (20: 00 May 16-20: 00 May 17)

　　Fourth, the impact and concern

　　1. Pay attention to the strong precipitation in western Yunnan and southeastern Tibet on the 15th to prevent secondary disasters caused by local heavy precipitation;

　　2. Pay attention to the high temperature weather in North China, Huanghuai and other places from 15 to 17;

　　3.16-17 rainfall process and its influence in Jiangnan and South China;

　　4. Pay attention to the development trend of drought in Yunnan;

　　5. Spring ploughing and spring sowing meteorological service.

At present, there are factories in Tianjin that offer 24-degree palm oil at 7,000 yuan/ton, a slight increase of 50 yuan/ton compared with yesterday, and another factory that offers 24-degree palm oil at 6,950 yuan/ton. The transaction is negotiable. 8 degrees 7400 yuan/ton, 14 degrees 7350 yuan/ton, 18 degrees 7250 yuan/ton.

　　The spot market of 24-degree palm oil in Rizhao, Shandong Province reported about 6900 yuan/ton, which was basically the same as yesterday. Some factories quoted 6950 yuan/ton, so the transaction can be negotiated, and the willingness to make a transaction is not strong.

　　24-degree palm oil in Zhangjiagang, Jiangsu Province, the market price is 6950 yuan/ton, up by 50 yuan/ton compared with yesterday; The turnover of 10-degree palm oil was 7,200 yuan/ton (negotiable), up by 50 yuan/ton compared with yesterday; 14-degree palm oil is 7050 yuan/ton, which is flat.

　　The price of 24-degree palm oil market in Wuhan, Hubei Province is 7000-7050 yuan/ton, which is basically stable. The transaction can be negotiated and the transaction is average. 28 degrees 6650-6700 yuan/ton, 10 degrees 7250 yuan/ton, the transaction can be slightly lower. Keep it steady.

　　The price of 24-degree palm oil in Guangzhou was around 6750 yuan/ton, which basically remained stable and the market negotiated. The market importer quoted 6800-6850 yuan/ton, and the transaction was average.

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Is your car a dual clutch gearbox? Will you buy a car equipped with a dual clutch gearbox?

In recent years, in order to get rid of the intellectual property rights and technical restrictions of AT gearbox and gearbox, some car companies have achieved overtaking in corners of automatic gearbox. Coupled with the advantages of direct shifting, small power loss, light weight and low fuel consumption of dual-clutch gearbox, the majority of car companies have increased the research and development and production of DCT dual-clutch gearbox, and achieved remarkable results, and a large number of dual-clutch gearboxes with excellent technology and stable performance have emerged.

The dual clutch automatic transmission is based on the manual gearbox. Different from the manual gearbox, two clutches in the dual clutch are connected with two input shafts, and the gear shifting and clutch operation are realized automatically through the mechatronic module integrating electronic and hydraulic components.

Powershift can be divided into dry type and wet type, and the main difference is the different cooling methods. Dry powershift is cooled by air, while wet dual clutch is cooled by oil. The cooling effect of oil is better than that of air, especially in the scene of frequent clutch use. Therefore, the wet dual clutch automatic transmission has the characteristics of good ride comfort, strong stability and long service life, which is more popular among consumers and becomes the mainstream of dual clutch.

The following small series will lead you to learn about the top 10 mainstream DCT gearboxes in China and see who is the strongest.

The above are ranked according to the torque they bear.

Dongfeng 6DCT150 is a wet dual-clutch gearbox jointly produced by Dongfeng and Getrag Company. Established in 2012, Dongfang Style Traak Automobile Gearbox Co., Ltd. is a joint venture established by Dongfeng Company and Getrag International Company, each holding 50% of the shares, to jointly develop, manufacture and sell low-torque dual-clutch gearboxes. In the second half of 2014, the design of 6DCT150 wet dual-clutch gearbox was finalized, with six forward gears and one reverse gear, which can withstand the torque of 150Nm. Later, engineers further improved that the current maximum torque can withstand 200Nm, and it does not exceed 60 kg after filling oil. Using the unique micro-sliding friction technology of Getrak, after the clutch is fully combined, a thin oil film will be attached between the friction plate and the clutch plate, which can effectively alleviate the instantaneous speed or torque fluctuation and bring a smoother driving experience. The gearbox is a lightweight and compact third-generation powershift, equipped with cascade gears and intelligent execution system, and its transmission efficiency, fuel economy, shift comfort and other indicators have reached the leading level of similar products.

The gearbox matched by Beijing Hyundai Elantra 1.4T is D7GF1 dry dual clutch gearbox produced by Beijing Hyundai Elantra, with the maximum torque of 220 Nm. The reliability and stability of 6at gearbox produced by Mobius are very high, second only to. This 7-speed dry dual clutch adopts motor-driven shift technology, and its internal components are mainly two dry dual clutches, two clutch actuators, two sets of shift actuators and three-axis planetary gear sets. In terms of reliability, it is higher than most dual clutches on the market, but the inherent problems of dry dual clutches such as fear of heat and low speed frustration are still not well solved. In the case of extreme congestion, these two gearboxes may have overheating protection, and the market reputation is average.

In order to get rid of the dependence on Aisin 6AT gearbox, Volkswagen is the first car company to popularize dual-clutch gearbox on a large scale, and it is also an example for some domestic car companies to learn and imitate. Volkswagen DQ200 is a seven-speed dry dual-clutch gearbox, which can bear the maximum torque of 250NM. At present, it is produced by Volkswagen Transmission Dalian Co., Ltd. in China. DQ200 has the advantages of fast shifting speed, simple structure, high transmission efficiency and good fuel economy, with a weight of only about 70KG. It is mainly matched with Volkswagen 1.4T engine and is widely used. There were many complaints in the early days, but with the continuous improvement of production technology, the proportion of complaints about this gearbox is gradually decreasing. However, the inherent disadvantage of dry dual clutch is that there is no cooling of gearbox oil. In the process of frequent start and stop of dry dual clutch, the clutch is easy to overheat, which leads to clutch plate jitter, abnormal noise and even damage.

Jianghuai is one of the earliest independent automobile companies in China to develop DCT dual-clutch gearbox, and it mainly cooperates with others. Its clutch module and electromagnetic box are from Bogwarner, and TCU software program is from Germany. The net weight of JAC’s 6th gear powershift is only about 71.5kg, which is due to its two sets of internal and external nested shafts. 6DCT gearbox adopts JAC’s unique patented clutch protection design, with two additional clutches. When the clutch is overloaded, it can quickly turn on overload protection and safety cut-off. In order to realize automatic transmission control, there are as many as 12 sensors connected in TCU control unit, which can effectively monitor the working state of the whole machine in real time and cope with various complex environmental conditions. Jianghuai 6DCT gearbox optimizes the gear position and gear arrangement, reduces idling parts, shortens the axial length, and effectively improves the product compactness. The gearbox also adopts high-precision and high-efficiency internal meshing rotor oil pump and new DCT special lubricating oil, which greatly reduces the energy loss of the system, makes the fuel consumption of the whole vehicle close to the level of manual transmission with the same gear number, and the transmission efficiency is as high as 95%.

It is one of the earliest manufacturers of dual-clutch gearbox in independent brands. "DM21", a new generation of MEGA TECH 7-speed wet powershift, is the latest fist work of SAIC. The total weight of the transmission is 82KG, which is the third generation product independently developed by SAIC. The economy, ride comfort and durability have been further improved, and the torque capacity has reached 300Nm, which has changed the problems of the previous generation gearbox, such as frustration and abnormal noise. This gearbox has an ultra-high transmission efficiency of 97%, and is equipped with an original three-cavity independent cooling and lubrication system for gear cavity, hydraulic control module cavity and clutch cavity, which effectively ensures fuel economy and stability. In addition, it also uses the ultra-high pressure zero leakage control system to ensure the accuracy and speed of shifting. This one is mounted on MG6, and its overall performance is remarkable, and its shifting is smooth and silky, with both power and handling. The transmission was rated as one of the top ten transmissions in the world in 2021.

The 7-speed wet powershift used by Changan Automobile is produced by its own company, and its code name is DF727. It was successfully developed in 2017. In 2019, DF727 was applied to self-owned brand passenger cars in batches, with the production and sales reaching more than 100,000 units. DF727 is the flagship product of Qingshan Industry in recent two years. Once it was launched, it was favored by the market, with compact structure, high-precision clutch thermal management strategy and intelligent gear shifting technology. Its comprehensive transmission efficiency reaches 94.3%, and it is widely used in 1.4T and 1.5T blue whale engines in Chang ‘an, such as UNI-T, CS55, etc., with excellent power response and fuel economy. At present, there are three known models: DF727A/B/C, and the maximum bearing torque is extended from 270NM to 300NM. The actual driving experience is not bad, but the probability of DC270 being frustrated when driving on low-speed congested roads is slightly higher. The quality of the gearbox produced by Qingshan with military quality is guaranteed.The transmission was rated asIn 2021, the world’s top ten speed changes in the Dragon Pan Cup.

When it comes to gearboxes, we have to admire Chery, which is a unique brand in China and independently developed CVT15 and CVT25. However, the torque of CVT gearboxes is limited. With the equipment of Chery’s strongest 1.6T and 2.0T high-torque engines, Chery has to equip them with gearboxes with greater torque. So Chery and the cooperative 7DCT300 came into being. 7DCT300 is the third generation gearbox with intelligent execution system, which can be horizontally centered and horizontally front-mounted, and the maximum input torque can reach 320Nm. Five high-performance clutches and gear shifting are adopted, and the gears equipped with smooth gear shifting and fast response speed, accurate sliding control of clutches and high-precision equipment processing also bring excellent NVH performance to the transmission, with comprehensive transmission efficiency exceeding 96% and net weight as low as 65kg. With the advantages of leading transmission efficiency, excellent shift comfort and low power consumption electro-hydraulic intelligent execution system, 7DCT300 has been favored by many OEMs.

The 7-speed wet dual clutch used by Geely is jointly developed by Geely and Geely, and is compatible with 48V light hybrid plug-in hybrid system. 90% of the suppliers of Geely’s dual-clutch gearbox are the top suppliers in the world. Compared with the traditional dry or wet DCT, Geely 7DCT adopts the latest generation of electro-hydraulic execution system. This not only retains the oil-cooling mode of wet double clutch, but also adopts the high-efficiency motor-driven shifting process, and adopts the controllable variable oil pump, which can supply oil on demand, and improves the power efficiency to the extreme, with the highest transmission efficiency reaching 97%. The great improvement of efficiency is closely related to the reduction of internal friction, and the loss of the product itself is further reduced through a number of technologies, such as electronic gear shifting, separate electro-hydraulic control of clutch, optimization of housing to reduce lubricating oil spill, and cooperation with famous lubricating oil manufacturers to develop low-viscosity DCT oil, so as to finally reduce internal friction and improve transmission efficiency. At present, Geely is widely used in the Lectra series, etc. From the current actual use effect, Geely’s 7-speed wet dual clutch is relatively stable.

As early as 2011, BYD developed a 6-speed dry dual-clutch gearbox with reference to Volkswagen DQ200 gearbox, which is the earliest car company in China to master the technology of dry dual-clutch gearbox. In 2013, BYD introduced the 6-speed wet dual-clutch gearbox 6DT35, which is still the result of reverse research and development. This gearbox can now be seen on BYD’s Song and Song MAX models. Its maximum torque is 350Nm and its weight is 94KG. At present, it only matches some small displacement engines. According to the owner’s report, BYD’s 6-speed wet dual-clutch gearbox has problems such as frustration and abnormal sound, and its quality needs to be improved. Fortunately, in 2020, BYD launched a new 7-speed wet dual-clutch automatic transmission. By simulating various operating conditions, the transient dynamics simulation analysis was carried out, and the unbalanced load with each gear was continuously corrected, so that the gear meshing was smoother, the impact between gears was reduced, and the smoothness of the transmission was better and the failure rate was lower. In terms of durability, the official claims that it can match the service life of AT. In addition, the new gearbox has higher transmission efficiency, more fuel saving, lower noise control, more direct power, and the transmission efficiency is as high as 95%, which is already in the leading position in China.

Great Wall, a gearbox, is based on itself and draws on the strengths of others.Great Wall DCT450 seven-speed wet dual-clutch gearbox, its comprehensive quality is recognized as a high-end product in the industry at present. Mainly manifested in: first, high reliability, accessories from famous enterprises,For example, the bearing of the gearbox is Schaeffler, Germany, and the dual-clutch module is Bogwarner TCU, USA. This gearbox consists of 157 parts, of which only 18 parts such as the outer shell and gear are produced by Great Wall itself, and all others are supplied by internationally renowned suppliers. Second, the noise control is excellent, it uses very low viscosity lubricating oil, and with the design of this gear pendulum vibration reduction flywheel, the noise of the gearbox is about 10 decibels lower than that of other similar levels; The third isIt can bear a large torque, and the maximum torque is as high as 450Nm. The adaptive models include mainstream 1.5T-2.5T gasoline engines, because the peak torque of these machines is basically between 250 and 450 nm. Fourth, the transmission efficiency is high, and the transmission efficiency of DCT450 gearbox is also very high, reaching the high standard of 95%. There are not many DCT that can reach this level, so this machine has obvious improvement effect on the performance of vehicles.

What’s your experience and feeling about the dual clutch? Welcome to leave a message and discuss in the comment area.

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