[YesAuto Test Drive] Energy crisis, global warming, and abnormal climate. When these words appear in newspapers, magazines, and the Internet around us almost every day, everyone is soberly aware that energy conservation and emission reduction have become an urgent issue. In the automobile society, each of us enjoys the convenience brought by cars. Cars change our lives, but they are also changing our environment. The continuous increase in the number of cars has increased energy consumption and at the same time increased the burden on the environment. How to solve energy and environmental issues and manufacture low-consumption, low-emission vehicles has become a consistent research direction for global auto manufacturers.
Hydrogen power, fuel cell, electric, flexible fuel, biofuel, hybrid power, major automobile manufacturers have thrown out their own solutions. Volkswagen, the world's fourth largest and Europe's largest automaker, also came up with a complete plan. Reduce fuel consumption and exhaust emissions on the existing basis through TDI, TSI engine, DSG dual-clutch gearbox and Hybird hybrid system; EcoFuel and SunFuel two new energy solutions can more effectively solve fuel problems and realize the availability of automotive fuel. Renewability; CCS composite fuel technology and fuel cell technology are the future development directions, and fuel cells can even achieve the goal of zero emissions.
Compared with complex new energy, hybrid power and other solutions, the method of reducing fuel consumption and emissions through TDI and TSI engines with DSG gearboxes is more mature and more economical. It is also the first thing we can enjoy. Volkswagen has also made a commitment in China. By 2010, all Volkswagens produced in China will reduce fuel consumption and emissions by 20% compared with 2005. The “Volkswagen Olympic Green Team” we tested this time allowed us to experience the future power of Volkswagen in advance.
As a car partner of the Beijing Olympics, Volkswagen has specially formed a “green fleet” in line with the slogan of the Green Olympics. These include Sagitar with 1.4TSI engine + 7-speed DSG gearbox, Magotan with 2.0TDI engine + 6-speed DSG gearbox, Magotan BlueMotion with 1.9TDI engine, Touran EcoFuel with natural gas fuel, and Tiguan 2.0TDI. Most of these models use TDI or TSI engines and DSG gearboxes. This is also the current Volkswagen Group's measures to deal with energy shortages and environmental pollution.
Although these models are not currently on the market, they represent the future development direction of Volkswagen in China. The powertrain strategy proposed by Dr. Fan Ande, President of Volkswagen China, is to introduce TSI and DSG gearboxes into domestic production to achieve The purpose of reducing fuel consumption and emissions. At present, two TSI engines have been equipped in domestically produced Volkswagen, Skoda and Audi models. The domestically produced 1.4TSI engine will be equipped on Sagitar models in 2009. By 2010, the first domestically produced 7-speed DSG dual-clutch gearboxes Will also be put into use. In addition, TDI series diesel engines may be considered for introduction into the domestic market after 2010.
Therefore, among the 5 cars tested this time, the Sagitar has become the focus of most attention. On the one hand, the 1.4TSI engine will appear on domestic models next year, and the latest 7-speed DSG gearbox will soon be put into production. The powertrain of the 1.4TSI+7-speed DSG used in this test drive is completely the powertrain of the domestically produced Sagitar in the future. Tiguan is also a hot model that has received many attentions. Since its launch in Europe last year, Tiguan has won numerous awards. At the same time, Tiguan has also filled the gap of Volkswagen Group in the field of compact SUVs. Tiguan has been introduced into the country when the domestic SUV market is booming. There is no doubt. I remember that this is the third time that Tiguan has appeared in China (previously Tiguan HyMotion appeared in the Bibendum Challenge last year and its debut at the Beijing Auto Show this year), and it is the first time that it can accept a media test drive. Unfortunately, the Tiguan tested this time is a 2.0TDI diesel model. The first batch of domestically-produced models in the future will undoubtedly be gasoline engine models, so the reference is of little significance.
● Sagitar 1.4TSI+7-speed DSG gearbox has high horsepower with small displacement
Let's start with the Sagitar 1.4TSI that everyone is most concerned about. The 1.4TSI equipped with this model is the latest in Volkswagen's TSI series of engines. It achieves high output and low consumption through turbocharging and direct fuel injection technology.
This 1.4TSI engine actually belongs to the Volkswagen EA111 series as the 1.4-liter naturally aspirated engine currently used by domestic POLO. After consulting some data, it is found that this engine is widely used in the European market. PASSAT, Turan, Tiguan, Scirocco and There are many models of the Golf series, and there are as many as 5 versions of 122 horsepower, 140 horsepower, 150 horsepower, 160 horsepower and 170 horsepower with mechanical turbo double supercharged. This time it is tuned to 96kW on the Sagitar. (130 horsepower), the torque has reached 220N·m.
It is not difficult to see from the above set of figures that this compact 1.4-liter engine has extremely high potential. The output power and torque level has not allowed the traditional 2.0-liter naturally aspirated engine, and the small displacement engine is more ideal. Energy consumption and emission levels.This 1.4TSI engine not only has a turbocharger technology, but also has technologies such as variable intake phase, variable intake manifold, and 6-hole injectors. In addition to the power comparable to a naturally aspirated engine with a larger displacement, its torque output curve also has inherent advantages. It can continuously output a peak torque of 220N·m from 1750 to 3500 rpm, and it will have plenty of power after starting. Output, very suitable for use in cities.
Another highlight of the Sagitar 1.4TSI is the latest 7-speed DSG dual-clutch gearbox. The dual-clutch gearbox has attracted widespread attention once it was launched. It not only has the smoothness of an automatic gearbox, but also has the driving pleasure and fuel economy of a manual gearbox. It can be said to be the most advanced gearbox currently. In recent years, the equipment rate of DSG gearboxes in Europe has also been soaring, and it has a great tendency to replace traditional automatic gearboxes. Volkswagen is the earliest manufacturer of dual-clutch gearboxes worldwide, and the 7-speed DSG is the latest product among dual-clutch gearboxes.
In actual use, the smoothness of the 7-speed DSG is very outstanding. It is difficult to detect the shifting action whether it is rapid acceleration or slow refueling. It complements each other with the 1.4TSI engine with sufficient low-speed torque. It is said that DSG has excellent fuel economy. Compared with the fifth-generation GOLF equipped with a 7-speed DSG and a 6-speed automatic transmission, the fuel consumption can be reduced by 19.3% to 23.6%. This is the official data given by Volkswagen. In the future, the 7-speed DSG After entering the country, we will also focus on its economic performance.
The Sagitar 1.4TSI I tested was supposed to be a domestically produced test car, but after checking the body nameplate, it was verified that it was made in Mexico. As a result, its workmanship and configuration are not much to us. Of reference.
The power performance of the 1.4TSI engine is very average. The 220N·m torque makes its acceleration performance remarkable. It starts very lightly and has sufficient power reserve at medium and high speeds. It also has a good performance when stepping on the pedal at 120km/h. Although this engine is not as fierce as the current 1.8T Sagitar, it is more suitable for most users. It completely solves the problem of slow acceleration of 1.6 and 2.0 models. Since the gearbox has more gears and the engine speed is lower during high-speed cruising, the engine basically remains at 2300 rpm at 120km/h. I believe that the economy also has a good performance.
● Magotan TDI and Magotan Blue Drive diesel are also environmentally friendly fuels
There are also two more special Magotan models in the team. 2.0TDI Magotan uses a 6-speed DSG gearbox (the 6-speed DSG gearbox uses a wet clutch, which can withstand greater torque; the 7-speed DSG uses a dry clutch, which currently bears limited torque). Diesel is also a more important part of Volkswagen's strategy. European manufacturers have more in-depth research on diesel engines, and Volkswagen is the pioneer of diesel technology among European manufacturers. With the advancement of technology, diesel engines are no longer a “pollution source” in people's impression of black smoke accompanied by loud noises.
Direct fuel injection replaces the past pump nozzle technology. With the addition of turbochargers, TDI engines have better combustion efficiency; exhaust gas catalytic devices and particulate filters also greatly reduce pollutant emissions. Diesel engines reduce CO2 emissions. There are also inherent advantages in terms of emissions, which can be reduced by 30% compared to gasoline engines of the same level.
However, for consumers, the greater significance of diesel engines is that they are simple in structure, economical and fuel-efficient, and are more suitable for urban driving because of their low speed and high torque. Diesel with low ignition point can be compression-ignited directly in the cylinder, so the diesel engine does not have an ignition system and it is easier to maintain. Compared with diesel engines and gasoline engines with displacement, the fuel consumption is also lower. Taking the Magotan 2.0TDI for this test drive as an example, the manufacturer's comprehensive fuel consumption per 100 kilometers is only 6.2 liters.
After a day of test drive, there are highways, urban loops, and town roads. During the period, there are more than two hours of idling on the spot. The whole journey is more than 200 kilometers, the average speed is more than 30 kilometers per hour, and the average fuel consumption displayed on the computer. Only 7.6 liters.In the driving process, the low-speed and high-torque characteristics of the diesel engine are also very obvious. It can reach a high torque output of 320N·m at 1800 rpm. The power during acceleration is extremely strong. Diesel models are obviously more suitable for urban use than gasoline models. When used, the maximum power of 140 horsepower is also close to that of a 2.0-liter gasoline engine.
Although diesel engine technology has made great progress, in fact its noise and vibration are much higher than gasoline engines. Sitting in the car, you can feel fine tremors from the clutch pedal and gear lever. The noise of the engine is still quite noticeable.
This 2.0TDI diesel version of the Magotan can also match the DSG gearbox. Although it has one gear less than the 1.4TSI Sagitar, the shifting process is also smooth. However, some problems were found during the test drive. The DSG gearbox was smooth when upshifting, but the downshifting action when the vehicle speed was reduced was a bit sudden. When the vehicle was approaching a stop, there would be a few consecutive sudden intrusions. Sex has some impact, which is also caused by the structure of the DSG gearbox, and it can also be said to be the only shortcoming of the current DSG gearbox.
With its own advantages, diesel engines have now been widely recognized in Europe, and the current market share in Europe is close to 50%, on the same level as gasoline engines. The domestic restrictions on diesel models cannot be fully lifted due to various reasons, but Volkswagen is also actively planning, after 2010, perhaps more diesel models will appear around us.
Another Magotan is the BlueMotion version with 1.9TDI engine. Volkswagen has developed blue drive technology for many years to further reduce fuel consumption and pollutant emissions on the basis of TDI diesel engines. In addition to optimizing the power system, this blue-drive version of Magotan also redesigned the shape of the vehicle with a better aerodynamic structure. At the same time, it uses low rolling damping tires to reduce power loss.
● Touran EcoFuel
Touran EcoFuel uses CNG natural gas as the main fuel. The anti-knock resistance of natural gas is more than 1/3 higher than that of ordinary gasoline. The emission of carbon monoxide, carbon dioxide and nitrogen oxides in the exhaust gas is significantly reduced and there is basically no particulate matter. Since the natural gas engine rarely produces carbon deposits and knocks, the life of the engine is also prolonged by 2 to 3 times. For users, the low cost of using natural gas is the most meaningful. At present, the price of natural gas for vehicles is between 2.6 and 2.9 yuan/cubic meter. If one hundred kilometers consumes 9 cubic meters of natural gas, the cost of using one hundred kilometers is only about 25 yuan, which is almost half of that of gasoline engines.
Touran EcoFuel uses a 2.0-liter engine that can store 18kg of natural gas and has a cruising range of 310 kilometers. There is also a 13-liter spare fuel tank that can automatically switch to gasoline mode when the natural gas is insufficient. The engine output power is 80kW (109 horsepower) and the maximum torque is 160N·m. At present, the power output of natural gas engines is still lower than that of gasoline engines of the same level, and the acceleration is somewhat slow. However, for those users who do not require high power and only seek transportation, the low cost of natural gas vehicles is indeed very tempting.●The first domestic trial Tiguan
Finally, there is a model that domestic users are very concerned about-Tiguan. It is currently reported that the Chinese name of Tiguan may be called “Tuguan”. Now that it has a Chinese name, it seems that it is not far away from us. Unfortunately, the Tiguan tested this time is also a 2.0TDI diesel model, not the first gasoline model to be introduced.
The two Tiguans I saw this time have two different front faces, one has a wide bumper, which is more suitable for road driving; the other is the Track&Field version, which is equipped with an engine bottom guard, approach angle and departure angle It's also bigger, with two appearances, let's call it the “road version” and the “off-road version” for the time being.
Tiguan and the domestically produced Sagitar and Touran are all derived from the PQ35 platform, and the wheelbase is 2604mm between the Sagitar and Touran. This time I mainly tested the Track&Field off-road version. The 2.0TDI engine can output 170 horsepower and the torque reaches 350N·m. It uses a 6-speed manual transmission and 4Motion four-wheel drive.
Since the wheelbase is only 26mm longer than that of the Sagitar, the Tiguan’s space is not much larger than that of the Sagitar, but the rear seats can be flexibly adjusted. The seat cushion can be moved forward 16cm in a 4/6 split, and the backrest can also be adjusted in angle, so the rear The row space is very comfortable. The interior configuration of the car is very rich, the panoramic sunroof makes the interior lighting very good, and the electric screen is used in the sunroof. There are small tables on the back of the two front seat backrests, and the height is also very suitable, which is very practical. Even the armrest box in the middle of the rear seat has different functions.
The RNS510 system used by Tiguan is different from the current domestic Magotan RNS510. It has more powerful functions. There is a Traffic button on the right side of the function keys. It should be able to receive real-time traffic information and use it with the navigation system, but after pressing it, it will be displayed on the screen. Shows that there is no available information, it should only be used in Europe and the United States at present.
Tiguan also has plenty of luggage compartment space, usually 470 liters. As long as you simply pull the tab on the seat, you can fold the backrest in a 4/6 ratio. When the backrest is folded, the seat cushion will automatically migrate. Ensure that the backrest can be completely flat, and the design is very thoughtful.
Since the test drive route was on paved roads, I did not experience the off-road performance of Tiguan. However, through a simple test drive, Tiguan gave me almost the same driving experience as a Volkswagen car. The suspension was tough and cornered. The roll is also not very obvious. Due to the powerful engine torque, the Tiguan accelerates very quickly, which is obviously more suitable for road driving.
It is indeed a bit hasty to experience 5 models in one day, but none of the 5 models are commercially available in China, so this test drive is not based on experience products. This test drive is more like a general education. Through this day’s activities, I suddenly realized that the situation of protecting the environment is so severe. At the same time, I also felt that the environmentally friendly vehicles that could only be seen on Discovery Channel in the past, new energy vehicles have already left. We are getting closer. Look at the hybrid cars from the laboratory to the streets in recent years. Not to mention foreign countries, there are also many hybrid cars on the market in China.
Generally speaking, buying an environmentally friendly car reflects a person’s sense of social responsibility, but the current prices of all new-powered cars are high, which is really not acceptable to ordinary consumers. To reflect social responsibility, economic ability is the prerequisite. . Isn't environmental protection to reduce fuel consumption and emissions? The TSI and TDI series engines tested this time have achieved small displacement, high power, low fuel consumption and low emissions on the basis of the existing internal combustion engines, without increasing the consumer’s cost of buying a car. On the contrary, low fuel consumption also saves the cost of use. To make more common people affordable, isn't this the green choice we need? I sincerely hope that the green fleet will not only serve the Olympics, but also serve the public and the environment around us earlier. I also hope that the greener and more environmentally friendly future power can be mass-produced as soon as possible and enter our lives.