作者： admin

　　　 [XCAR Information Original]　

　　　　As we all know, engine, gearbox and chassis are the three key components of an automobile, and they are also the core technologies that a vehicle manufacturer must master. In the last article, we talked about the achievements of independent brands in engine research and development. In the early stage, independent manufacturers mostly used imitation and purchase to obtain engine technology. Compared with engines, the lack of self-owned brands in automatic gearbox technology is more obvious. The research and development of automatic gearbox is difficult, with high technical content, and it is difficult to imitate in a short period of time, which makes it impossible for self-owned brands to develop automatic gearboxes that can be applied on a large scale at present.

Technical blockade! Automatic gearbox inventory of dozens of autonomous vehicles

　　　　There is a great demand for automatic gearbox in the market, and the demand is still growing, which makes independent brands can only obtain automatic gearbox by purchasing. However, the lack of their own technology and the restrictions of foreign gearbox manufacturers also lead to the limited choice of automatic gearbox for independent brands, and most of the products they carry do not have much technical advantage. Today, what we are going to introduce to you are several automatic gearboxes that are common in our own brand models.

　　　● AT gearbox

　　　　Manual gearbox is mainly composed of gears and shafts, which produce variable speed and torque through different gear combinations; The automatic gearbox AT is composed of hydraulic torque converter, planetary gear and hydraulic control system, which realizes variable speed and torque by means of hydraulic transmission and gear combination.

　　　　Hydraulic torque converter is the most characteristic component of AT gearbox, which is composed of pump wheel, turbine and guide wheel, and directly inputs engine power to transmit torque and clutch action. Pump wheel and turbine are a pair of working combinations, which are like two fans placed opposite each other. The wind from one active fan will drive the blades of the other passive fan to rotate, and the flowing air — — Wind becomes the medium of kinetic energy transfer.

　
Hydraulic torque converter of conventional automatic gearbox

　　　　If air is replaced by liquid as the medium to transfer kinetic energy, the pump wheel will drive the turbine to rotate through the liquid, and then a guide wheel is added between the pump wheel and the turbine to improve the transfer efficiency of the liquid. Because the range of automatic speed change and torque change of hydraulic torque converter is not large enough and the efficiency is low, several rows of planetary gears are connected in series behind the turbine to improve the efficiency, and the hydraulic control system will automatically control the planetary gears with the change of engine work, thus realizing automatic gear shift.

　　　　Self-owned brand AT gearbox provider 1: Aisin Seiki

　　　　Manufacturer profile:Japan Aisin Seiki Co., Ltd. is one of the world’s top 500 enterprises and the ninth largest auto parts manufacturer in the world. Founded in 1949, the company is the main supplier of Toyota auto parts, and its auto parts manufacturing technology is world-famous.

　
Aisin Seiki provides AT gearboxes for most domestic independent manufacturers.

　　　　Aisin Japan Co., Ltd. is an import and export trading company specializing in auto parts, auto warranty equipment, hardware, mechanical equipment, power tools and other products. About 95% of the company’s sales come from auto parts, but the company also manufactures refrigeration equipment and cutting machines, as well as consumer products such as beds and sewing machines. Aisin Seiki has subsidiaries in the United States, Europe, Asia and Australia.

　　　　Roewe 750

　　　　Aisin Triple-Mode five-speed automatic manual transmission

　　　　Named KV6, the 2.5 V6 engine is mounted on the Roewe 750, SAIC’s first self-owned brand model. It is said that it is of the same ancestry as the Land Rover Freelander in the UK, and it is also made of aviation-grade all-aluminum material in terms of materials, which not only reduces the weight by 40%, but also improves the efficiency by 20%, and can explode 135KW at 6500 rpm. With EVIC-III intelligent dual-valve variable air intake control technology, the maximum power is 135KW/6500rpm and the maximum torque is 240Nm/4000rpm.

　
SAIC Roewe 750

Roewe 750 gearbox comes from Aisin.

　　　　Matching this V6 engine is a five-speed Triple-Mode intelligent adaptive automatic gearbox from Aisin-Warner, Japan. There are three modes: normal mode, sports mode and snow mode. In sports mode, you can obviously feel the rise of power level.

　　　　Roewe 550/MG6

　　　　Aisin 5-speed Tiptronic gearbox

　　　　Roewe 550 is equipped with a 1.8L ordinary aspirated engine and a 1.8T turbocharged engine respectively. The 1.8T all-aluminum engine can output the maximum power of 118kw horsepower at 5500 rpm and the maximum torque of 215Nm at 2500-4500 rpm. Numerically, the Roewe 550 lags behind the Volkswagen engine with the same 1.8T engine in terms of torque output.

Roewe 550 is equipped with Tiptronic five-speed automatic manual transmission provided by Aisin.

　　　　Roewe 550 automatic transmission adopts 5-speed Tiptronic automatic manual transmission made by Aisin, which has excellent performance, both the advantages of simple operation of automatic transmission and the advantages of arbitrary manual transmission. However, in actual driving, Roewe 550 is more comfortable, and the power and gearbox are relatively mild, without too intense control.

　　　　In addition, MG6, which is on the same platform as Roewe 550, is also equipped with Japanese Aisin Tiptronic five-speed automatic manual transmission. After the driver hangs in manual mode, he can also manually shift gears through the shift paddles behind the steering wheel to improve driving pleasure.

　　　　Roewe 350

　　　　Aisin 4-speed Multi-Mode automatic gearbox

　　　　The 1.5L naturally aspirated engine equipped on the Roewe 350 uses a silent timing chain and a VTi multi-angle continuous variable timing system (variable timing of intake and exhaust), with a maximum power of 80kw/6000rpm and a maximum torque of 135Nm/4500rpm. With 5-speed manual transmission and 4-speed automatic transmission.

Roewe 350

Roewe 350 gearbox is equipped with a four-speed gearbox provided by Aisin.

　　　　Roewe 350 is equipped with the 4-speed Multi-Mode automatic gearbox of Aisin Japan, which can be adjusted and corrected according to the driver’s driving habits and road conditions to ensure the smoothness when shifting gears.

Aisin is the main supplier of AT gearbox with its own brand.

　　　　Pentium B50

　　　　Aixin AQ250 series six-speed automatic manual transmission

　　　　Pentium B50 is equipped with Volkswagen’s 4-cylinder 8-valve single overhead camshaft engine, and its technology is old. The maximum power of 74kW/6000rpm and the maximum torque of 145Nm/3800rpm are a little behind in the same displacement. However, this Volkswagen engine, which is also equipped on Jetta and Sagitar, has more than 2.3 million units in China, which means that the maintenance and repair of this engine is more convenient and economical.

Pentium B50 is equipped with 6-speed automatic manual transmission provided by Aisin.

　　　　Matching this engine is an Aisin AQ250 series six-speed automatic manual transmission, which is easy to be mistaken for the same one used by sagitar and Bora. Although both are six-speed automatic manual transmission, the Pentium B50 is not Tiptronic six-speed automatic manual transmission, but Aisin’s six-speed automatic manual transmission. This gearbox matches Volkswagen’s 1.6L engine very well.

　　　　Pentium B70

　　　　Aisin 5-speed automatic manual transmission

　　　　Pentium B70 and mazda 6 belong to the same platform model, with 2.3L and 2.0L powertrains. The 2.0L engine is the main engine, equipped with the same 2.0L engine as mazda 6, with the maximum power of 146 HP /6500rpm and the maximum torque of 183Nm/4000rpm, and with S-VT variable valve timing and VIS variable intake manifold technology.

B70 is equipped with a 5-speed automatic manual transmission provided by Aisin.

　　　　Like mazda 6, the Pentium B70 is equipped with a 6-speed manual transmission or a 5-speed automatic manual transmission, which is provided by Aisin Seiki.

　　　　Guangzhou automobile chuanqi

　　　　Aisin 5-speed automatic manual transmission

　　　　GAC Chuanqi officially rolled off the assembly line on September 3rd. The first batch of GAC Chuanqi off the assembly line was equipped with a 2.0L engine. This engine did not adopt the direct injection technology previously speculated by the media, but was an ordinary naturally aspirated model with a maximum power of 110kw/6300rpm. Then GAC will launch Chuanqi’s 1.8L model.

Chuanqi will carry a variety of models from 1.8 to 2.4L.

5-speed automatic manual transmission provided by Aisin.

　　　　Chuanqi will match the 5-speed manual or 5-speed automatic manual transmission, instead of the AMT gearbox previously speculated by the media. The 5-speed manual transmission is also from Fiat, which is the original manual transmission of Alfa Romeo 166, while the 5-speed automatic manual transmission is from Aisin Seiki, Japan, which is also a very mature and reliable product.

　　　　Dongfeng fengshen S30

　　　　Aisin Step-gate four-speed intelligent automatic transmission

　　　　Fengshen S30’s 1.6L engine equipped with PSA, a partner, has stable and reliable quality. The maximum power reaches 78KW, and the torque output reaches 85% of the maximum at 1,500 rpm, 90% at 2,000 rpm, and reaches the maximum torque of 142Nm at 4,000 rpm.

Dongfeng fengshen S30

Dongfeng fengshen S30 gearbox comes from Aisin.

　　　　Fengshen S30 automatic gearbox is equipped with Japanese Aisin Step-gate four-speed intelligent automatic transmission, which is calibrated by German GIF company. The automatic gearbox has mature technology, can automatically learn and remember the driver’s driving habits, and can provide the desired shift mode at any time.

　　　　Chang ‘an Yuexiang

　　　　Aisin DSS 4-speed automatic transmission

　　　　Changan Yuexiang is equipped with a 1.5L displacement engine, with a maximum power of 72kw and a maximum torque of 137Nm, and its maximum torque can be output at 3500 rpm.

Yuexiang is equipped with Aisin DSS 4-speed automatic transmission

　　　　Yuexiang’s automatic transmission model matches the original Aisin DSS 4-speed automatic transmission imported from Japan. The biggest feature of this gearbox is that the electronic control replaces the traditional hydraulic control, which realizes life-long maintenance-free and no need to change lubricating oil, and has longer service life, stronger reliability, better ride comfort and economy.

　　　　Brilliance Junjie cross

　　　　Aixin 4-speed automatic gearbox

　　　　Junjie Cross1.5L and 1.6L engines are available. 1.5L engine is 4a151.5l in-line 4-cylinder dual overhead camshaft VVT-i variable valve technology engine independently developed by Brilliance Auto. The rated power of this engine is 75kw/5500-6000rpm, and the maximum torque can reach 135Nm/4500rpm. The 1.6L engine is a Mitsubishi 4G18 1.6L engine from dongan power, with a power of 74kw/6000rpm and a maximum torque of 138Nm/4500rpm.

Junjie cross is equipped with Aisin 4-speed automatic transmission.

　　　　Junjie Cross is equipped with Aisin 4-speed automatic transmission, with automatic manual function. Compared with the four-speed automatic gearbox used in the self-owned brand models below 100,000 yuan, its shift smoothness is at the leading level.

Self-owned brand model equipped with Aisin AT gearbox

　　　　Independent brand AT gearbox supplier II: Mitsubishi Corporation

　　　　On February 1st, 2010, the first auto automatic transmission imported from Japan’s Mitsubishi technology was officially rolled off the assembly line in Dongan Mitsubishi. At this point, Dongan Mitsubishi will be able to provide automobile engines, manual gearboxes and automatic gearboxes.

Mitsubishi engines are widely used in self-owned brands.

　　　　The first phase of the automatic gearbox project of Dong ‘an Mitsubishi has been completed, which can produce 4AT and 5AT gearboxes, and has the technical space to upgrade to 6AT, with an annual production capacity of 150,000 units, meeting the power transmission demand of engines with displacement of 1.3L－2.4L.

　　　　Brilliance Junjie FRV

　　　　Mitsubishi 4-speed automatic manual transmission

　　　　Junjie FRV adopts Mitsubishi 4G18S and 4G13S power engines in the whole car series, of which the maximum power of 4G13S engine is 62.5KW/6000rpm. The maximum torque output is 108/4500 Nm/rpm. It will be equipped with a 5-speed manual transmission and a 4-speed automatic manual transmission from Mitsubishi.

Brilliance Junjie FRV

Mitsubishi’s 4-speed automatic gearbox

　　　　Self-owned brand AT gearbox supplier 3: Japan JATCO Company

　　　　JATCO is the third largest manufacturer of automatic gearbox design in the world. Founded in 1943, JATCO is one of the three largest suppliers of automatic gearbox in the world.

　　　　Its business covers Europe, Asia and America, and mainly provides automatic gearboxes for most mainstream vehicle manufacturers such as Nissan, Mitsubishi, Mazda, BMW, Volkswagen, Land Rover, Jaguar, Kia, Hyundai, Daewoo, Changan Ford and Brilliance, with an annual supply of more than 4 million units. Jeep Guide, Dongfeng Nissan Sylphy and Ford Mondeo are all equipped with gearboxes produced by JATCO.

　　　　Byd F3

　　　　JATCO four-speed automatic gearbox

　　　　BYD F3 is equipped with 1.6L and 1.5L power, and the platinum version is equipped with Mitsubishi 4G15S inline four-cylinder /16-valve, using Mitsubishi MVV vertical vortex lean combustion technology. The maximum power can reach 78 kW at 6000 rpm and the peak torque of 134Nm at 4500 rpm. Match 5-speed manual or 4-speed automatic gearbox.

Byd F3

A 4-speed automatic gearbox produced by JATCO.

　　　　BYD F3 automatic transmission uses the original imported 4-speed automatic gearbox produced by Japanese manufacturer JATCO. The four-speed gearbox produced by JATCO company has mature and reliable technology, and its matching with Mitsubishi engine is excellent. Mitsubishi Corporation has completed all the vehicle calibration work for the powertrain, and its power performance, fuel economy and maneuverability have reached a high level.

　　　　Independent brand AT gearbox supplier 3: Hyundai Motor

　　　　In 1967, Zheng Zhouyong founded Hyundai Motor Company. After more than 40 years of development, it has become the largest automobile manufacturer in South Korea and entered the ranks of world-famous automobile companies.

　　　　Chery Ruiqi G5

　　　　Hyundai 5f25at gearbox

　　　　The Ruiqi G5 automatic transmission model will also use the 2.0TCI engine independently developed by Chery, with a maximum power of 116Kw/5000rpm and a peak torque of 250Nm. The 2.0TGDI turbocharged direct injection engine has a maximum power of 144kw/5500rpm and a maximum torque of 290Nm/1800rpm. Due to the large output torque, only the 6-speed manual gearbox is matched.

　
Ruiqi G5 is equipped with a 5-speed automatic transmission provided by Hyundai.

　　　　The 2.0TCI engine of Ruiqi G5 matches the 5AT gearbox provided by Hyundai. This automatic gearbox is 5F25, with five forward gears and the maximum transmission torque of 250Nm.

　　 Independent brand AT gearbox supplier 4: Geely (independent research and development)

　　　　Geely panda

　　　Geely JL-ZA 142 fully automatic 4-speed gearbox

　　　　Panda uses 1.0L and 1.3L displacement engines. The 1.0L engine has a maximum output power of 50KW, a peak torque of 88Nm when the speed reaches 3600 rpm, and a lifting power of 52kw. CVVT technology is adopted. The other 1.3L engine, code-named MR479Q, has a maximum power of 63kW and a maximum torque of 110N·m, which is basically equivalent to the same displacement engine on the market.

Geely panda

A 4-speed automatic gearbox independently developed by Geely.

　　　　The automatic version of Panda is equipped with JL-ZA142 fully-automatic 4-speed gearbox independently developed by Geely. It was successfully developed by Geely after three years of huge investment. It not only won the first prize of scientific and technological progress in China automobile industry, but also won the evaluation of "advanced level of international similar products". This is also the only automatic gearbox with independent intellectual property rights in China. Independent research and development makes panda automatic transmission models have great advantages in price.

Other AT gearbox suppliers

　　　●　continuously variable transmission

　　　　CVT has no specific gear, and its operation is similar to that of automatic gearbox, but the change of speed ratio is different from the trip stop process of automatic gearbox, but continuous, so the power transmission is continuous and smooth.

　　　　The advantages of CVT are as follows: First, the power output of CVT gearbox is linear, and the shifting frustration caused by it also disappears, which is very smooth in actual driving. Secondly, the transmission system of CVT can have infinitely many gears in theory, and the gear ratio, speed ratio and the balance of performance, fuel consumption and exhaust emission in the traditional transmission system are easier to achieve. Finally, the mechanical efficiency and fuel economy of CVT transmission are much better than ordinary automatic transmission, second only to manual transmission, and the fuel economy is much better.

continuously variable transmission

　　　　So CVT has no shortcomings? The answer is no, first of all, when starting or accelerating, CVT steel belt or belt is prone to slip, which will affect the power transmission, thus affecting the acceleration feeling. Secondly, CVT steel belt or belt material requirements are relatively high. Although CVT has a simple structure, if it fails, it is generally not a minor problem. This will affect the use of car owners and increase maintenance costs.

continuously variable transmission

　　　　One supplier of CVT gearbox: Punch Company of Belgium

　　　　Belgian Punch (Bang Qi) Company is a German ZF company specializing in the production of transmissions (including CVT).

　　　　Under the premise that international automobile manufacturers have blocked the key technologies in China, Bang Qi is also the only overseas manufacturer that provides CVT gearboxes for domestic independent brands, and the gearboxes provided are not the most advanced products at present, and the actual performance is average.

　　　　Southeast V3 Lingyue

　　　　Punch VT2 transmission

　　　　V3 Lingyue is equipped with 4A91 engine produced by Shenyang Aerospace Mitsubishi, and uses the latest MIVEC variable valve timing system of Mitsubishi Motors, which truly reaches the international advanced level of natural inhalation, with a maximum power of 120 HP and a maximum torque of 143Nm/4000rpm.

V3 Lingyue CVT version adopts intelligent CVT continuously variable gearbox with 6-speed manual gear.

　　　　The V3 Lingyue automatic transmission is equipped with a new generation VT2 CVT CVT produced by Punch, a famous transmission company. The transmission adopts the technology, technology and production line of Punch company completely, with 6-speed automatic manual transmission and various intelligent modes such as snow and sports, so that drivers can choose the most suitable driving mode according to their own driving habits and climatic factors.

　　　　Great Wall Tengyi C30/ Xuanli/Lingao

　　　　Punch VT2 transmission

　　　　Great Wall Tengyi C30, Xuanli and Lingao are all equipped with GW4G15 engine. GW4G15 engine is an all-aluminum gasoline engine developed by Great Wall Motor, which adopts double overhead camshaft, 4 cylinders and 16 valves, plastic intake manifold and VVT technology. With a maximum power of 77kW and a maximum torque of 138Nm, this engine can easily achieve Euro IV emission.

Tengyi C30

Tengyi C30 is equipped with CVT gearbox provided by Bang Qi.

　　　　Tengyi C30 and CVT continuously variable transmission carried by Xuanli and Lingao are internationally renowned original imported products from PUNCH, Belgium. It is worth mentioning that this type of CVT has also been applied to the old Mini Cooper, and its value has increased by 27.80% compared with that of 4AT transmission at 0-100km/h, 19.30% at 80-120km/h and 18% at 100-140 km/h.

　　　　Emgrand EC7

　　　　Punch VT2 transmission

　　　　Emgrand EC718 is powered by Geely’s JL-4G18 CVVT engine with a displacement of 1.8L The maximum power is 102kW (139HP) /6200rpm and the maximum torque is 172Nm/4200rpm.

Geely emgrand EC718

　　　　The CVT gearbox matched with Emgrand EC7 1.8L engine is a VT2 CVT continuously variable transmission from Belgian Punch (Bang Qi) company, which has three modes: manual (6-speed), sports and economy (normal).

　　　　BYD G3

　　　　Punch VT2 transmission

　　　　BYD G3 has four models with 1.5L and 1.8L displacement. The 1.5L model adopts BYD473QB and Mitsubishi 4G15S champion engines independently developed by BYD, the 1.8L model adopts BYD483QA engine independently developed, and the 1.8L automatic transmission model adopts the newly developed CVT continuously variable gearbox, with the maximum output power of 90kw at 6000 rpm and the maximum torque of 160Nm at around 3700 rpm.

BYD G3 is equipped with CVT gearbox provided by Bang Qi.

　　　　BYD G3 uses a CVT transmission of VT2 type in Bang Qi. Its technical feature is that it can simulate a 6-speed manual transmission and also has a sport mode.

　　　　CVT gearbox supplier II:Jiang Lu Rong da

　　　　Hunan Jianglu Rongda Vehicle Transmission Co., Ltd. was established in November 2003. It was established by Hunan Jianglu Machinery Group, Hunan Xicheng Industrial Group and Northern Transmission Company on the basis of the original Hunan Rongda Automobile Electronic Technology Co., Ltd., with a registered capital of 88 million yuan. It is a high-tech company specializing in the development, production and technical services of continuously variable transmission (CVT) of cars in China.

　　　　Lifan 620

　　　　Lifan 620 CVT still uses the lf479q2 1.5L engine produced by Lifan, with a maximum power of 69kW and a maximum torque of 128Nm at 3500 rpm.

Lifan 620

Lifan 620 gearbox is provided by Jianglu Rongda.

　　　　The steel belt, the core technology of CVT gearbox in lifan 620, comes from Bosch. Compared with the ordinary version of AT gearbox, equipped with CVT technology, it can improve power by 10% and save fuel consumption by 10%-15%, with a fuel consumption of 7.5L per 100 kilometers.

Self-owned brand models equipped with CVT gearbox

　　　　●AMT gearbox

　　　　Automatic mechanical transmission (AMT) is a new type of transmission that electronically controls the traditional dry clutch and manual gear transmission to realize automatic shifting, and its control process basically simulates the driver’s operation. According to the driver’s intention, the electronic control part of AMT gearbox can automatically control the clutch and shift process. More complicated, we don’t need to go into details. In fact, we can imagine the shift process of AMT in this way. His clutch and shift mechanism are controlled by electronic parts, and the shift will be automatic naturally.

　
Electric control device and hydraulic actuator of AMT

　　　　The biggest advantage of AMT gearbox is that it does not need to make too much changes to the existing manual gearbox, and its technical structure is relatively simple, and the cost is not too high for manufacturers. In fact, AMT is a manual gearbox with electronically controlled clutch and shift program, so it is the same dry clutch as manual transmission, so the transmission force is more direct and the fuel consumption is more economical. The ordinary AT gearbox adopts hydraulic "clutch", which will have some losses in energy transmission and slightly higher fuel consumption.

AMT is somewhat similar to an automatic manual transmission.

　　　　Of course, AMT has obvious shortcomings, that is, the shift quality is not high and it is prone to frustration. If you don’t step on the accelerator, the car won’t move forward even if you shift into D gear. This is somewhat different from the ordinary AT gearbox.

　　　　AMT gearbox supplier: Ma Ruili.

　　　　Manetti-Ma Ruili Group is one of the members of the world’s top 500 Italian FIAT GROUP, with a history of more than 90 years. Manetti Ma Ruili, headquartered in Corbetta, Milan, is a multinational group company engaged in the research, development, design and production of automobile parts, systems and components in the automotive industry, and is in a leading position in the design and manufacture of automobile parts and high-tech systems.

Manietti Ma Ruili, a subsidiary of Fiat, which produces AMT, has established a joint venture in Shanghai.

　　　　Tianjin FAW Weizhi

　　　　Ma Ruili Freechoice AMT

　　　　The VIOS 1.3L and 1.5L models are equipped with Toyota engines code-named 8A and 5A respectively, but only the sedan 1.5L automatic flagship model is an automatic transmission model, equipped with Toyota’s 5A+ engine. Although the technology is not advanced, the maximum power of 75kW/6000rpm and the maximum torque of 130Nm/4400rpm are more than enough to propel VIOS’s 1-ton body.

Weizhi

Weizhi is equipped with an AMT semi-automatic gearbox provided by Ma Ruili.

　　　　Weizhi automatic gear matches an AMT semi-automatic gearbox provided by Ma Ruili. This AMT automatic manual transmission has five forward gears, and P gear is cancelled, followed by "left, middle and right arrangement", with N gear and R gear on the far right, D gear in the middle, and a lever slot on the far left to switch between "automatic" and "manual" modes. Its disadvantage is that the shift impact is obvious and the ride comfort is not as good as that of the common automatic gearbox.

　　　　qiruiqq

　　　 Ma Ruili AMT

　　　　At the end of 2009, Chery launched two 1.0L models equipped with AMT gearbox, which also increased the number of models equipped with AMT gearbox in Chery QQ3 from the original two to four, with displacement of 1.0L and 1.1L.. The maximum power and torque of the 1.1L engine are 68 horsepower /6000rpm and 90Nm/3500-4000rpm respectively.

Chery QQ3

Chery QQ3 is equipped with AMT semi-automatic gearbox provided by Ma Ruili.

　　　　Chery QQ3 AMT model is equipped with a complete set of computer-controlled hydraulic shift system designed and manufactured by Italian Ma Ruili company, which can simulate the driving actions of excellent drivers and choose the best shift timing. According to official data of Chery, AMT model not only saves about 13% fuel than traditional automatic cars, but also saves about 9% fuel than similar manual cars.

Self-owned brand models equipped with AMT gearbox

　　 Extended reading:Real kung fu? Shantou? Detailed explanation of six high-end autonomous engines

　　　　Engine is the heart of a car, and it is also one of the core technologies of a car. A car manufacturer can not build seats, tires or multimedia systems, and even a gearbox can be obtained by purchasing. But what is certain is that no international automobile enterprise even introduces engines by purchase. Engine research and development has become the most invested and enthusiastic research and development project of automobile manufacturers, and it can also be regarded as one of the main signs to measure a manufacturer’s technical strength.

Shantou? Real kung fu? Detailed explanation of six high-end autonomous engines

　　　　The research and development of self-owned brand engines started from scratch, from imitation to independent innovation. Although there is still a big gap with the international level, there are also many excellent products in just over ten years. If you can’t remember which engines are available at the moment, don’t worry. Below we will present and introduce these independent research and development achievements to you.

　　　　Chery 2.0TGDI: Turbocharged Direct Injection Engine in Independent Brand

　　　　Vehicle models: Ruiqi G5 and Ruiqi G6.

　　　　Technical Keywords: Turbocharging, Direct Injection, Variable Valve Timing

　　　　In a word: Turbocharged direct injection technology is no longer the patent of Volkswagen, and Chery’s icebreaking finally made these technologies go down the altar and return to the public.

　　　　Chery’s progress in engine research and development is obvious to all. At first, it jointly developed its own ACTECO engine with AVL of Austria. This series of engines are technically quite satisfactory, and there is not much advanced technology applied, and the power output is also very general. However, ACTECO engine laid the foundation for Chery to develop more advanced engines.

Ruiqi G5 2.0TGDI

　　　　During this year’s Beijing Auto Show, Chery launched the Ruiqi G5 equipped with a 2.0TGDI engine. In order to promote this engine, Chery spared no expense to hire Messi to endorse it. Regardless of the final influence, this turbocharged direct injection engine is still worthy of recognition.

Chery 2.0TGDI engine

　
Turbocharger with intercooler (left) Real shot of 2.0TGDI engine (right)

　　　　The 2.0TGDI engine of Ruiqi G5 has a maximum power of 144kw/5500rpm and a maximum torque of 290Nm/1800rpm. Several technologies, such as direct injection GDI in gasoline cylinder, turbocharged intercooling TCI and variable valve timing VVT, are applied. Previously, Chery also launched a 2.0TCI engine with a maximum power of 116Kw/5000rpm and a peak torque of 250Nm. From the data. The 2.0TGDI engine has obvious advantages.

The 2.0TCI engine of Ruiqi G5.

　　　　The 2.0TSI engine carried by Volkswagen Magotan has a maximum power of 147kw/5000-6000rpm and a peak torque of 280Nm/1800-5000rpm. From the data point of view, the power output of Chery 2.0TGDI engine is almost the same, but in terms of reliability and practicality, Chery 2.0TGDI still needs to stand the test of time.

2.0TGDI engine output characteristic curve

　　　　The maximum torque of the 2.0GTDI engine reaches 290Nm, which exceeds the maximum bearing torque of the modern 5AT gearbox of 250Nm, so it is only equipped with a 6-speed manual gearbox, while the 2.0TCI model is equipped with a 6-speed manual gearbox and a 5-speed automatic gearbox.

　
Ruiqi G5

　　　　The body size of Ruiqi G5 2.0TGDI is 4717/1794/1473mm and the wheelbase is 2700mm. Ruiqi G5 adopts the front and rear suspension design of front double wishbone and rear multi-link, and the British Lotus Company participates in the whole process of adjusting the chassis, which can achieve a good balance in sports and comfort.

　
Ruiqi G6 will be equipped with a 2.0TGDI engine.

　　　　In addition, the 2.0TCI engine is also mounted on the Ruiqi G6. The length, width and height of the Ruiqi G6 are 4968mm, 1845mm and 1526mm； respectively. The body size parameters surpass the mainstream B-class cars, such as New Camry, Magotan and even the Eight-Generation Accord, and the 2820mm span is an absolute leader in the wheelbase that reflects comfort. The G6 is equipped with two high-performance engines, namely a 2.0TCI intercooled turbocharged engine and a 3.0 V six-cylinder engine.

On January 13th, Chongqing North Railway Station, passengers walked on the platform. On that day, the passenger flow of middle school students increased significantly. Reporter Cui Lishe Visual Chongqing

On January 13th, the reporter learned from the Municipal Transportation Commission that Spring Festival travel rush will last from January 14th to February 22nd in 2025. During the period of Spring Festival travel rush, it is estimated that the passenger volume of Chongqing Tiegong will reach 32.014 million, up by 7.1% compared with 2024. On the same day, reporters came to bus stations, railway stations, airports and other places and found that the major transportation hubs in our city have introduced various safeguard measures for Spring Festival travel rush to ensure the safe travel of the vast number of passengers.

Multiple measures to ensure the smooth operation of Spring Festival travel rush

It is understood that the biggest feature of Spring Festival travel rush this year is that the Spring Festival holiday has been increased to 8 days, with more passenger flow, and comprehensive transportation is facing greater challenges. It is estimated that during the period of Spring Festival travel rush in 2025, the passenger flow of railways, rail transit and civil aviation in our city will increase by 15%, 4.8% and 3% respectively. Stimulated by the free passage policy of expressways, the traffic volume of expressways in our city will also increase significantly.

To this end, the city will optimize the train frequency and running time in a timely manner, and adopt ways such as opening special trains and opening more passengers to ensure the smooth and orderly transshipment of important nodes such as Chongqing West Railway Station and Chongqing North Railway Station; Strengthen the connection between roads and airports, railway stations, tourist attractions, large communities, etc., and improve the coverage of road passenger customized services; We will increase the security of rural transportation services, and effectively protect the travel needs of urban and rural people by opening shuttle buses (buses) and carrying out appointment response services.

In order to ensure Spring Festival travel rush’s travel, our city will increase the capacity guarantee. The relevant person in charge of the Municipal Transportation Commission said that during the Spring Festival travel rush period, the city is expected to invest 854 pairs of railway passenger trains, 18,000 passenger vehicles, 341 water transport capacity and 40,000 civil aviation transport capacity; There are about 6,500 buses, about 330 rail trains, 15,000 cruise taxis and 52,000 online taxis in the downtown area every day.

At the same time, in view of the routes around the core business districts and popular scenic spots, the city will extend the bus operation hours in a timely manner and actively explore emerging market businesses such as tourist chartered cars to adapt to the night travel habits of citizens and tourists coming to Chongqing. Rail transit lines 1, 2, 3, 4, 6 and 10, loop lines and other lines will flexibly extend the operation time by increasing the number of empty cars, and increase the number of small roads and spare cars to ensure sufficient transportation capacity in the core area. Other rail transit lines and suburban railway jumpers and copper wires are flexibly arranged according to the characteristics of passenger flow along the line.

Ten sets of CR400AF-S Fuxing intelligent EMUs have been put in place.

The reporter learned from the railway department that 10 sets of CR400AF-S Fuxing intelligent EMUs have been put in place for the first time in Chongqing, and all of them will be put into Spring Festival travel rush this year. The maximum operating speed of the EMU is 350 kilometers per hour, which has the advantages of light weight, noise reduction, equipment integration and layout optimization. The number of train personnel increased from 577 to 619, and the capacity of large luggage rack doubled. Each carriage is equipped with a large luggage rack, which improves the passenger capacity of EMU trains and the stability of large luggage placement.

Chongqing Railway Station is also fully prepared for Spring Festival travel rush. On January 13th, the reporter saw at Chongqing North Railway Station that the passenger flow of middle school students who came to take the bus increased significantly. "This year, Spring Festival travel rush and Chongqing Railway Station are expected to send 9.4 million passengers, and the peak passenger flow will appear around the seventh day of the first month." Chen Yue, deputy director of Chongqing Station Workshop of China Railway Chengdu Bureau Group Co., Ltd., said that the passenger flow of students, visiting relatives and returning migrant workers will be scattered before the holiday, and the passenger flow will be relatively flat after the holiday. It is expected that the return flow of visiting relatives, the flow of working in the south, the flow of students and the flow of working in the north will be staggered in turn.

In Spring Festival travel rush this year, the station has set up green channels for verification and security inspection at each entrance, and emergency passengers who arrive 15 minutes before driving will be given priority security inspection by volunteers.

In addition, the station organizes party member, youth commandos and volunteers to provide service guidance in key parts such as the waiting room, ticket office and service desk to ensure the safety of passengers’ travel and the waiting order. At the same time, give full play to the brand role of "Malian Service Desk" and "Hongyan Service Station", a national demonstration site for learning from Lei Feng, and actively carry out "silver hair service" to provide caring services for elderly tourists.

Add ticket window and green channel at bus station.

On January 13, the reporter went to the four-kilometer bus station in Nan ‘an District, and the number of passengers increased somewhat compared with the past. "Soldiers, firefighters, survivors of heroes and heroes have special ticket sales windows, and we strictly implement the preferential treatment policy for transportation." You Wu, deputy manager of the passenger transport department of the four-kilometer bus station, said that it is expected that the average daily passenger traffic in Spring Festival travel rush this year will be the same as last year, with an average of 8,000 passengers per day and about 400 classes; The concentrated travel time of passenger flow is from January 25 to January 28, and the daily peak passenger flow is expected to be around 30,000. To this end, the station has successively opened manual ticket sales windows, expanded online and self-service ticket sales channels, and provided convenient ticket purchase services for passengers.

"During the peak passenger flow period, we will also temporarily adjust the departure area of some line buses to realize the orderly diversion of passengers and ease the operating pressure of the ticket office, waiting room and parking space." You Wu said that the station will dynamically allocate capacity through reasonable arrangement of flights to ensure that passengers queue less, get tickets, take cars and get home.

The airport sets up a special check-in counter for urgent and special passengers.

On January 13th, the reporter saw in T3A Terminal of Chongqing Jiangbei International Airport that three staff members wearing beige coats and ribbons were helping the check-in passengers. Their ribbons are printed with the words "urgent passengers, let me help you". "During this year’s Spring Festival travel rush, we will increase the number of standby personnel according to the number of passengers on the flight and increase the on-site support force." According to the relevant person in charge, Chongqing Jiangbei International Airport has introduced a series of Spring Festival travel rush safeguard measures.

For example, for specific groups of passengers such as express passengers, first-time passengers, and groups, exclusive check-in counters and eye-catching summoning tips are set up, and special personnel are also set up on both sides of the check-in island to form a linkage with all security links in the service chain to escort them. At the same time, the "three exemptions" transit service is also introduced, that is, no baggage collection, no exit from the quarantine area and no second security check.

In addition, Chongqing Jiangbei International Airport will arrange Spring Festival travel rush volunteers during peak hours to provide guidance, assistance and other services for passengers, and provide efficient and warm-hearted quality services. Provide the whole process of "love" guidance service for first-time passengers, elderly passengers over 60 years old, passengers carrying infants under 3 years old, disabled passengers and late arrival passengers. (New Chongqing-Chongqing Daily reporter Yang Yongqin Yang Nizi Huang Qiao Cui Wei)

　　Shi Yunyu is in the office. Photo courtesy of respondents

　　Character business card

　　Shi Yunyu: Academician of China Academy of Sciences, biophysicist and structural biologist, professor and doctoral supervisor of China University of Science and Technology. Born in Chongqing in April 1942, she was admitted to the Department of Biophysics of the Chinese University of Science and Technology in 1960. Since then, she has formed an indissoluble bond with life science. Over the years, Shi Yunyu has been sticking to the front line of scientific research, using structural biology methods to study the molecular mechanism of gene expression regulation and cell fate determination, and has made many innovative achievements, making contributions to China’s biological nuclear magnetic resonance research in the world.

　　Dressed in a cloth and with silver hair, Shi Yunyu clicked the mouse neatly in the office, and the three-dimensional structure of protein jumped into his eyes: "The world of biomacromolecules is full of unknowns. We have encountered many difficulties and challenges in the research process, but we must not give up lightly." Shi Yunxi said.

　　My father’s words and deeds, what he saw and heard on his way to school, let the seeds of scientific research serve the country take root.

　　Shi Yunyu has always had a scientific research dream! Whether she leaned against her father when she was young, listened to him describe the colorful physical world, or came into contact with the frontier of life science on the long way to school, the idea of serving the country through scientific research always lingered in her mind … …

　　Shi Yunyu was born in the era of war. The experience of being displaced as a child made her realize that personal destiny is always closely linked with the destiny of the country and the nation. Father Shih-Yuan Sze is a doctor of physics under the guidance of Madame Curie. After graduation, Shih-Yuan Sze, then 25, returned to China to teach and became one of the pioneers of nuclear physics research and higher education in China. In Shi Yunyu’s view, the spirit of serving the country through scientific research is vividly displayed in his father; His words and deeds also inspired Shi Yunyu’s enthusiasm for scientific research.

　　With a passion for natural science, Shi Yunyu was admitted to China University of Science and Technology in 1960. At that time, biophysics was a new discipline and the education system was not yet mature. "Academician Bei Shizhang, then head of the biophysics department of the Chinese University of Science and Technology, believed that the curriculum should be ‘ Four unlike ’ Let students lay a good foundation in mathematics, physics, chemistry and biology. " Shi Yunyu said that it is the solid basic course study that lays a solid foundation for his future scientific research work.

　　In the classroom, the days when scholars such as Qian Xuesen, Hua Luogeng and Yan Jici gave lectures to everyone made her remember vividly … … Shi Yunyu said: "How fortunate to be able to feel the deep patriotic feelings of the older generation of scientists at close range!" In the auditorium, everyone gathered around a black-and-white TV set and rejoiced at the China athletes winning the world table tennis championship. She still can’t forget it: "When I was young, everyone’s enterprising state always inspired me and made me determined to contribute to the construction of the motherland with my own scientific research results."

　　After graduating from college, Shi Yunyu was first assigned to work in the former Institute of Traditional Chinese Medicine of the Ministry of Health; In 1970, she returned to China University of Science and Technology to teach, and before long, she moved south from Beijing to Hefei, Anhui.

　　Shi Yunyu undertook the task of relocating instruments and equipment to the south. Together with her colleagues, she moved boxes full of equipment from the teaching building to the station in Beijing, and then moved them from the station to the teaching building … …

　　Engaged in computer molecular dynamics simulation of biological macromolecules earlier; Leading the establishment of the key laboratory of structural biology of Chinese Academy of Sciences

　　The southward migration of China University of Science and Technology has gone through hardships, with the loss of scientific research equipment and weak teaching strength … … "Fortunately, the school later took a series of new measures and gradually got on the right track." Shi Yunyu said that the school provided opportunities for young teachers to go abroad for further study, and she became the first young teacher in the Biology Department of the Chinese University of Science and Technology to pass the examination of the Ministry of Education. She went abroad twice for further study, engaged in computational biology research and biological nuclear magnetic resonance spectroscopy research, and learned the theoretical and experimental methods of studying the structure and function of biological macromolecules with molecular dynamics and two-dimensional nuclear magnetic resonance spectroscopy. Shi Yunyu said: "The experience of studying abroad has broadened my scientific research horizons and urged me to work harder to acquire knowledge."

　　In the 1970s, Shi Yunyu and his colleagues were eager to keep up with the pace of international academic circles and carry out cutting-edge research on biomacromolecules in the University of Science and Technology of China, but they lacked funds and instruments. In order to promote the project quickly, Shi Yunyu and his colleagues went all over the library in Shanghai, searched for literature and materials, and racked their brains for two weeks before finishing the application for the National High-tech Research and Development Plan.

　　At that time, there were three subjects selected by the Biology Department of the Chinese University of Science and Technology, and the "New Technology Research of Molecular Design in protein" which Shi Yunyu was in charge of was one of them. Since then, she began to engage in computer molecular dynamics simulation of biological macromolecules and became one of the pioneers in this field in China. The project "Computer Simulation of Biomolecular Structure and Dynamics" led by Shi Yunyu won the second prize of the Natural Science Award of China Academy of Sciences in 1996 and the third prize of the National Natural Science Award in 1999.

　　In the early 1990s, Shi Yunyu’s laboratory was supported by the Chinese Academy of Sciences and bought the first 500 MHz nuclear magnetic resonance spectrometer, which can be used for the solution structure of biological macromolecules. However, when the experiment was really carried out, there were still many difficulties … … Her attitude is firm: "scientific research should be devoted, able to withstand loneliness and twists and turns." The research group led by Shi Yunyu analyzed the solution structures of a series of important protein, and revealed the protein interaction and its functional significance. She also led the establishment of the Key Laboratory of Structural Biology of Chinese Academy of Sciences, and later became an important part of Hefei National Research Center for Microscale Material Science.

　　Do popular science for primary and secondary school students, teach basic courses for undergraduates, and train more young scientific research talents.

　　Shouxian County, Anhui Province, No.1 Middle School. On the stage, Shi Yunyu held a microphone and explained his own experience and knowledge of life science. Under the stage, the students were absorbed and deeply attracted by the biomacromolecule world she described. From the stimulation of scientific interest to the choice of scientific research direction, from laying a solid foundation to the enthusiasm of serving the country, in an hour and a half, Shi Yunyu planted the seeds of science in the hearts of children … …

　　Although he is 80 years old, Shi Yunyu still walks into primary and secondary schools many times to give lectures on popular science to students. "Being exposed to scientific knowledge since childhood has aroused my curiosity and embarked on the road of scientific research; I also want to pass this enthusiasm on to the children. " Shi Yunyu hopes to open a window of science for children.

　　Shi Yunyu remembers: In 2019, at Huangtugang Town Central Primary School in Macheng, Hubei Province, she gave a popular science class on "Hemoglobin and Hemoglobin Diseases" to children in Dabie Mountains. Her classmates’ eyes are full of thirst for scientific knowledge, which deeply touched her, so she likes to go out of campus and go to the mountains … …

　　In the College of Life Sciences of the Chinese University of Science and Technology, in order to strengthen the basic education of undergraduates, Shi Yunyu insisted on giving general biology classes to freshmen for many years. Shi Yunyu said that for interdisciplinary subjects, basic courses are very important. "Teaching is the bounden duty of teachers, and I want to train more talents for science." As the first dean of the School of Life Sciences of the Chinese University of Science and Technology, together with her colleagues, she took the lead in establishing a complete teaching system of structural biology and computational biology in the Chinese University of Science and Technology, and specially invited experts from the Institute of Biophysics of the Chinese Academy of Sciences to teach students and trained a group of young academic leaders working in interdisciplinary fields such as computational biology and structural biology.

　　Today, with her silver hair, she still rushes to work in the laboratory every day. In school, when she meets Shi Yunyu, the students always call her "Grandma Shi" in a friendly way. At present, "Grandma Shi" has begun to study the structure of protein related to aging and degenerative diseases and the molecular and cellular mechanism of diseases. In addition, she is actively promoting the research of artificial intelligence and biomedicine. She believes that every new field has a lot of knowledge to learn, and the happiness of mountaineering is not only the moment when you reach the top of the mountain, but also in the process of continuous climbing.

　　■ Reporter’s Notes

　　Research never stops, only lifelong learning.

　　During the interview, Shi Yunyu was full of interest when he mentioned the frontier development in the field of life sciences … … At the age of 80, she is willing to study with young people while cultivating scientific research talents. In Shi Yunyu’s view, being able to explore the mysteries of the biomacromolecule world with students is both happy and fulfilling. Young people always learn new things faster, and they can experience the taste of being a student when they meet something she doesn’t quite understand.

　　Life science is closely related to population health, medicine and ecology, and the life world is full of many unsolved scientific problems. For Shi Yunyu, research never stops, only lifelong learning. It is countless scientists, like her, who keep their enthusiasm for learning and keep climbing up, which makes scientific research full of vitality … …

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