[YesAuto Test Drive] The domestically produced Sagitar 1.4TSI can be said to be a model that has attracted much attention now. Its popularity is no less than that of the Golf 6. In addition to enjoying the preferential tax policy for small displacement models, its TSI+DSG advanced power The assembly has also become the focus of everyone's attention. Today, the editor experienced this Sagitar 1.4TSI model first in Beijing, so let’s share with you my test drive experience.
Since the final domestically produced Sagitar 1.4TSI model has not yet been officially unveiled, all the test-driving cars this time are imported models. Except for the 1.4TSI+7-speed DSG powertrain, other aspects may be different from the domestic models. Here Please pay attention.
● Appearance, interior and current Sagitar models are not much different
I think everyone already knows the Sagitar very well, so I won’t go into it here. Although the test drive is an imported model, the basic appearance and interior are not much different from the domestic model, just the configuration and The materials used are slightly different. What is certain is that the future domestic 1.4TSI models will only replace the powertrain, and the configuration is similar to the current Sagitar models, but the specific configuration will not be known until it is listed.
● 1.4TSI engine worth looking forward to
The introduction of the previous Sagitar 1.8TSI and Magotan 2.0TSI models has given us a more detailed understanding of the TSI technology. The so-called TSI means “turbo-increase-internal direct injection engine”, which means that the fuel injector is directly installed inside the cylinder, and fuel is directly injected into the cylinder, so that the fuel and air are more evenly mixed, so that the combustion is more complete and the combustion efficiency , And also reached lower emission standards.
Volkswagen's TSI engine can be said to represent the most advanced engine technology in the world, and the 1.4TSI engine was selected as one of the world's top ten engines not long ago, which makes us look forward to this engine even more. We have experienced the Sagitar 1.8TSI model before, and the power is definitely among the best in the same class, and many friends may be worried about whether the power performance of the Sagitar can meet our needs after the 1.4TSI engine is now equipped?
Before starting the test drive, I had the same questions as everyone, but through the actual driving experience, I completely dispelled my concerns. Although the power of the 1.4TSI engine is not as fierce as the 1.8TSI, I think it is also strong to describe it. Not too much.
Although this 1.4TSI engine has no advantages over other 2.0 naturally aspirated engines in terms of parameters, its explosive power is significantly higher than the general 2.0 engine, especially the mid-stage acceleration ability after the turbo is started is very good, and a wide torque platform It also ensures continuous acceleration. It just so happens that in this test drive, we are dominated by high-speed sections, and the Sagitar 1.4TSI can easily reach a speed of 180km/h, which makes me very satisfied. In addition, in the high-speed stage, after we cruised at 140km/h for a period of time, the trip computer showed that the fuel consumption was 9.4L/100km, and the economy was also very good.
However, the only problem with the Sagitar 1.4TSI is that the start will appear a bit weak. Due to the low speed at the start, the turbine has not yet started, and the torque is not fully utilized at this time, so the body will shake slightly, but this process is very short and starts smoothly The engine will immediately enter the state.
I think if it was a 1.4TSI engine alone, it might not be so attractive, and another important component is the DSG dual-clutch gearbox.
The following is a video about the working principle of the 1.4TSI engine, which can give you a more intuitive understanding of the TSI engine. (The video takes some time to load, please be patient if the internet speed is too slow )
● Another important part of the powertrain: 7-speed DSG dual-clutch gearbox
I have to admit that Volkswagen is indeed in a leading position in terms of dual-clutch technology, and I think many friends understand that dual-clutch gearboxes also start from DSG, but before, some high-end models and even sports cars will use dual-clutch transmissions. Box, but now the dual clutch has come to us.
◆ Basic working principle of DSG gearbox
The so-called dual-clutch gearbox means that there are two clutches to control two sets of shifting mechanisms. Clutch A and 1/3/5 gears are a set of control mechanism, and clutch B and 2/4/6 gears are a set. Control agency. When you shift to the first gear, clutch A is engaged and start to transmit power; when you continue to increase the throttle, the computer will make a judgment, and then take the lead to engage the second gear, but the clutch B is not engaged; and the shift speed is reached After that, the process of raising the first gear to the second gear only needs to switch clutches A and B, which greatly shortens the shift time, does not have a sense of frustration, and improves the transmission efficiency.
After all, boring text may not be able to fully describe the working principle of the DSG gearbox in detail, so the following two videos can give you a more intuitive understanding of how the DSG gearbox works. (The video takes some time to load, please be patient if the internet speed is too slow )
◆ Three-dimensional detailed explanation of Volkswagen 7-DSG dual-clutch automatic transmission
◆ Three-dimensional detailed explanation of Volkswagen 6-DSG dual-clutch automatic transmission
We all know that Volkswagen launched a 6-speed DSG gearbox code-named DQ250 earlier, but last year again launched a 7-speed DSG gearbox code-named DQ200, so what is the difference between the two besides the difference in gears? What?
The focus here is on the clutch. Among them, the 6-speed DSG uses a wet clutch, which can withstand a maximum torque output of 350N·m. It is mainly used in large-displacement vehicles with a power transmission efficiency of 85%; and the subsequent 7-speed DSG It uses a dry clutch, which can withstand a maximum torque output of 250N·m. It is mainly used in small-displacement vehicles with a power transmission efficiency of 94%. The 220N·m torque output of the 1.4TSI engine and the 7-speed DSG gearbox are just a perfect combination, and the close gear ratio of the gearbox improves comfort and economy.
● 1.4TSI+7-speed DSG gearbox feel
If you need a high-speed engine output, you only need to increase the throttle. At this time, the DSG gearbox can still provide you with a very fast and smooth shifting experience. The power connection is very close, and it is matched with the 1.4TSI engine wide. With the power output of the torque platform, overtaking in daily road conditions has become a very easy task.
Test drive summary:
After a short day of contact, we have a general understanding of the Sagitar 1.4TSI+7-speed DSG model. It can be said that this power combination brings us more surprises, and its power performance is stronger than I expected before. , And the use of DSG dual-clutch transmission also allows ordinary consumers to feel the charm of high-tech products. It can be said that this power system has not disappointed us, and this also allows us to be on the market at the end of this year and adopt the same power The Golf 6 of the assembly is also full of expectations.
In addition, the preferential policy of consumption tax on small-displacement vehicles also makes Sagitar 1.4TSI more attractive in the domestic market, which means that consumers’ actual purchase costs will be greatly reduced, which is the most desirable for domestic users. Arrived.
Of course, what we are talking about is the reduction of actual car purchase costs based on the manufacturer's guidance price, and the future Sagitar 1.4TSI pricing will become the key. Judging from the current Volkswagen product line, the appearance of 1.4TSI is to replace the 2.0 model, but because it uses a more advanced engine and gearbox, the cost will increase. In addition, according to the news we got from FAW-Volkswagen, in the early stage of the Sagitar 1.4TSI, its 7-speed DSG gearbox could not be localized, so all imported gearboxes could only be used. Therefore, this has also improved the overall performance to a certain extent. The cost of the car. So overall, the future price of Sagitar 1.4TSI is bound to be higher than the current 2.0 models. However, due to the layout of the FAW-Volkswagen product line, its price cannot be higher than the current 1.8TSI model.
However, in the domestic market dominated by price, the impact of price may be higher than that of advanced technology, especially now that models of the same level, such as Focus, have different degrees of discounts. Therefore, the Sagitar 1.4TSI still faces severe challenges. The test, a reasonable price has become the key, and the Sagitar 1.4TSI will be officially listed at the end of August this year, and all the mysteries will be revealed at that time, let us look forward to it!