[YesAuto Review] BYD Su Rui was launched on August 21 and became one of the most popular models on the Autohome website. The most eye-catching is the new “1.5T+ dual-clutch” powertrain. This article focuses on experiencing its dynamic performance, especially the performance of the first dual-clutch gearbox of its own brand. As for the introduction of exterior, interior and space, interested readers please refer to the static experience article (click to enter).
This 1.5T engine named BYD476ZQA has been seen on BYD G6, with a maximum power of 113 kilowatts (154 horsepower) and a maximum torque of 240 N·m. The parameters completely surpass the ordinary 2.0L naturally aspirated engine. It is matched with the 6DT25 dry dual-clutch gearbox with a maximum torque of 240 N·m, which is just enough to match the engine.
Regarding the origin of the engine and gearbox, our colleagues in the technology channel once did a detailed 1.5TID technology demystification (click to enter). It is found that most of its structure is very similar to the Volkswagen 1.4TSI engine and 7-speed DSG gearbox. In fact, it is derived from the “reverse development” of the familiar Volkswagen 1.4TSI+DSG.
BYD is not a simple imitation. It has high hardware requirements. The key components are provided by well-known international manufacturers. The supplier level is no less than that of joint venture brands. In addition, the manufacturer has also made some technological innovations, such as the use of aluminum alloy cylinders. To reduce weight, the gearbox's dual clutch module and electronic control unit (TCU) are also independently developed.
In daily driving, this power system works well most of the time. The 1.5T engine is relatively soft below 2000 rpm, and starts to exert obvious force above 2500 rpm, and continues to more than 5000 rpm. The gearbox's switching between 1st and 2nd gears is a bit jerky. The shifting action of other gears is tight, and the setback is greatly reduced, reflecting the smoothness of the dual-clutch.
When accelerating rapidly in the middle, the gearbox’s response is slightly dull. In some cases, even if the accelerator is half stepped, it is unwilling to downshift. It can only rely on the engine to fight alone and work hard to inject fuel. Fortunately, its low-speed torque is still enough The sense of acceleration is barely acceptable.
To get the best performance, you must decisively press the accelerator to the end, but you still don't expect the gearbox to bring surprises. Downshifting is always worrisome and lacks passion. The good news is that the engine never disappoints. After the speed is increased, the whole car is finally refreshed, and the acceleration becomes smoother. The speed exceeds 100 km/h and there is stamina, which is comparable to most mainstream 2.4L naturally aspirated medium-sized vehicles. The level of the car.
Like other dry dual clutches, Su Rui 1.5TID is not very good at driving in congested road conditions. Frequent acceleration and braking make the clutch exhausted, accompanied by a faint metal knocking sound, and small fluctuations in engine speed follow. , Ride comfort is greatly reduced.
Su Rui adopts an electric power steering device, the feedback force is slightly biased, and the pointing accuracy in the small middle angle range is intentionally reduced to take care of comfort. The chassis is re-developed, and there is no qualitative change in the structure. It is still a common torsion beam rear suspension. The overall sense of the body is better than the previous product. The feedback on the road vibration is concise and neat. It does not emphasize softness, but maintains proper support.
In the intense driving, the body posture feedback is timely, the suspension damping force is linear, and the front direction is clear enough to be easy to control, which adds confidence to the driver. Another thing that is well done is that the ESP body stability control system is very delicate, and it always gently pulls the vehicle back from the edge of loss of control. See the performance test results of Su Rui on the next page.
◆ Accelerated test:
We have long been accustomed to the self-protection of the dual-clutch gearbox when starting. Surprisingly, the Su Rui gearbox has almost no limit on the starting speed, and can even start at 5000 rpm! After the brake is released, the gearbox is quickly combined. The 205mm-wide tires are slipping wildly. The scene is very visually impactful, but this will lose too much dynamic torque, so the starting speed should not be too high. Controlling around 3000 rpm can run better. Achievement. In the end, we measured the 0-100km/h acceleration time of this car to be 9.51 seconds.
A small episode occurred during the test: after about ten times of extreme acceleration, the odd gears of the gearbox suddenly disappeared, leaving only 2, 4, and 6 gears. After turning off the engine and restarting the engine, everything returned to normal. For this, we also contacted the manufacturer’s technical staff for the first time, and their explanation was the program setting of the trip computer for the gearbox “overheat protection”.
I think this statement is credible. When we step on the brakes and hit the accelerator on the spot, the clutch is actually in a semi-linked state. Frequent high-speed combination will inevitably make the clutch overload and the danger of overheating. Everyone is familiar with it. With the “dual clutch” structure, a strike of a clutch can cause the loss of the three coaxial gears, and in all likelihood, it is 1, 3, and 5 gears. Fortunately, this dual-clutch gearbox of Su Rui has not really overheated, and the electronic system has activated the protection program, which is regarded as an early warning. As long as the vehicle is restarted, the problem will be solved quickly.
Everyone may have questions. I have never heard of a dry dual-clutch gearbox that is so fragile. In fact, we all know that dual-clutch gearboxes usually cannot hit the throttle to raise the starting speed in the D gear. They are very gentle at the start. This is actually the protective measure of the program design on the clutch. This is not the case with BYD's gearbox. It will first try to meet the needs of the driver, allowing you to start at high speeds until you are close to the clutch's tolerance limit and start the overheat protection program; other dual-clutch gearboxes focus on the source. Eliminate operations that may cause overheating, which reflects the difference in design concepts, and BYD is more cautious in setting the protection program.
In fact, you don’t need to worry too much about the above phenomenon. You will almost never encounter this kind of continuous high-intensity linear acceleration when driving, so the overheat protection program of the gearbox will not be activated, and normal driving will not be affected. If even you encounter this situation, as long as you stop and turn off the engine, everything will be back to normal after restarting.
In the near future, we will have a detailed analysis article on this engine and gearbox. We will have more detailed explanations on these issues at that time, and you can always pay attention.
◆ Brake test:
The stroke of the Su Rui brake pedal is short and the feedback is moderate. What is rare is that the release of the braking force is very linear, and there is almost no ABS spring foot situation, which gives people a very good feeling. The average braking distance we tested is 41.07 meters. This result is within the excellent standard recognized by the car home and belongs to the normal and reasonable range. In addition, Su Rui's braking stability is also very obvious, and the difference between several braking results is very small. In general, Su Rui has made significant progress in braking compared with the previous F3/G3, and its performance is worthy of our recognition.
◆ Performance test video
◆ Noise perception:
The noise level of Su Rui does indeed meet the standards of joint venture vehicles. It needs to be pointed out that there are many sources of noise in the car, including engine noise, wind noise and road noise. Even if the noise value is the same, the sound source and frequency are different. It will make people feel different.
◆ Fuel consumption test:
In the fuel consumption test, we simulated urban road conditions with high traffic volume. Nearly half of the roads were congested. The average speed displayed by the trip computer was 30km/h, which was close to the environment of most car owners. In the end, the BYD Su Rui drove 119.3 kilometers, consumed 10.39 liters of fuel, and averaged 8.7 liters/100 kilometers. Objectively speaking, it is still slightly inferior to Volkswagen's 1.4T+DSG, but it is enough for us to accept it. After all, its power has been greatly improved, and its fuel consumption has not increased significantly compared with the naturally aspirated models of the same level.
In general, all the results of Su Rui are okay, but it lacks some outstanding advantages. At the end of the article, let us look at other fresh features and the competitive analysis of this car.
In addition to the powertrain, another highlight of Su Rui is the remote parking function. The owner can use the remote control to control the front and rear and left and right steering of the vehicle within a range of 10 meters, and the maximum speed is limited to 2 kilometers per hour. For specific operation methods and effects, you can see the previous static experience article.
Regardless of whether it is a joint venture brand or an independent brand, the BYD Su Rui is the first mass-produced car currently on sale to have this function. This spirit of early adopters is worthy of praise. Of course, while this feature brings convenience, it will inevitably make people feel a little uneasy deep in their hearts. In the test, it was found that the vehicle can be remotely controlled even when the door is open. Personally, I think this is likely to cause safety hazards unintentionally. In addition, since it can remotely park cars now, will it be able to drive remotely in the future? The factory setting speed is 2 kilometers per hour, can the later modification be accelerated to 20 kilometers per hour? These are just puzzles that I personally associate with, and do not represent vehicle problems, and these questions will also be answered together in a recent technical article.
● Competitiveness analysis:
Combining high technical content, high configuration and high cost performance, Su Rui's strength cannot be underestimated. The first thing to bear the pressure is the Great Wall C50, which uses a tit-for-tat 1.5T engine, but it is a pity that Great Wall has been unable to launch a matching automatic gearbox. In terms of configuration, C50 is not cheap. It seems that Great Wall needs to speed up the pace. Up.
Another opponent is Changan Yidong, with a guide price of 73,900 to 94,900. This car is not good in power. The advantage is that the appearance is novel and dynamic, and the mechanical performance is stable and reliable. The guide price of the Surui 1.5TID we tested is 85,900 yuan, the same price of Yidong is 1.6L automatic Shuya type, compared with the two, the comprehensive cost-effective consideration seems to still have the advantage of BYD Su Rui.
The Emgrand EC7, which has always been outstanding among its own brands, is also a veteran rival for Su Rui. The minimum guide price of 1.8 with automatic transmission is 86,800, and the minimum guide price of Su Rui with automatic transmission is 85,900. The configuration is not comparable to that of Emgrand. Sometimes relying on technical content and cost performance may not be able to win. Consumers will also consider factors such as word of mouth and reliability. These are the strengths of Emgrand EC7, and Su Rui will gradually accumulate.
Equipped with technology and configuration above the same level, BYD Su Rui has a stronger competitiveness. Some joint venture brand models with a starting price of more than 100,000 yuan may enter its attack range. Of course, BYD Su Rui The assembly process and detailed design need to be further strengthened.
The 1.5T engine equipped by Su Rui has excellent performance, taking into account power and economy, and is very suitable as a family car; the judgment of the dual-clutch gearbox is more complicated. In terms of actual performance, its comprehensive quality is still comparable to similar products of the joint venture brand. There is a certain gap, and reliability needs to be tested. However, with the price factor, it has completely turned over again. Currently, there is only Su Rui that can provide such a high-specification hardware configuration at the same price. As the cheapest dual-clutch gearbox model, we can still What is required? It should be said that this car has basically met people's rational expectations for it.
It was also mentioned before that the control program of this dual-clutch gearbox was independently developed by BYD. First of all, it must be admitted that it is not easy for independent brands to achieve the current results. It is based on this kind of dare to think and dare to do, and can put it into practice. The spirit of BYD is worthy of praise. This is a good start for our independent auto industry. It at least proves that we are not very far away from the world's top auto technology. It gives us full confidence in our own brands. At the same time, it is objectively said that there is still room for improvement. It is hoped that manufacturers can further improve the shifting logic in the future. Software upgrades are not technical bottlenecks that are difficult to overcome, but sufficient time and energy are required.
If you are interested in the BYD Su Rui mentioned in the article, because the car is a product of BYD A1 network and is sold in the same store as BYD G3, you can click here to find local dealers .