[Interpretation of car home’s Fresh Technology] (|) The order has been broken by 20,000, and from the feedback of the previous test drive video, netizens are most interested in the cloud technology carried on the chassis of this car. As it happens, I visited BYD’s manufacturing base in Jinan some time ago. This base is one of BYD’s latest bases, which mainly undertakes the production and manufacturing of dolphins and Tengshi N7, and the engineers responsible for Tengshi N7 chassis and BYD Yunqi also work here. This article will talk to you in depth about my feelings about this chassis and its technical characteristics.
The type of cloud chariot
First of all, we need to know the general distribution of cloud technology. For a better understanding, we can compare it to four students at different stages.
Yunqi -C (primary school students), Yunqi -A (junior high school students), Yunqi -P (senior high school students) and Yunqi -X (college students). As you can see, this set of technical logic is from the lowest C to the highest X. Among them, under the same big technical framework, it may be further subdivided, and they will have subtle differences in their capabilities.
● Is Yunxiao an active suspension?
Some time ago, many netizens in the forum debated whether the ideal air suspension was an air suspension, and later it was extended to the cloud of Tengshi N7. Regarding the ideal air suspension, our previous video has been deeply interpreted, so you can review it. (Interpretation of Ideal Magic Carpet Suspension)
For Yunqi, the current situation is as follows: Yunqi -C (primary school students), Yunqi -A (junior high school students), Yunqi -P (senior high school students) and Yunqi -X (college students) are all basic or standard versions, among which Yunqi
Let’s talk a little more here. Tengshi’s engineer said: The sold models with electromagnetic suspension, such as Tengshi D9, can be upgraded to a cloud in the future through OTA. At the same time, through the decentralization of the algorithm, road information can be collected by the camera, road characteristics can be identified in advance, and the damping of the shock absorber can be adjusted to realize the function of active suspension.
● Return to theme: Tengshi N7 suspension analysis and Yunnian -A composition.
OK, through the above explanation, I believe everyone has a general understanding of Yunqi. Let’s take a detailed look at the chassis of Tengshi N7 and share the specific riding experience of Yunqi-A.
The central controller is placed in the middle of the car body, just like the brain, which obtains the sensor information first, and then gives the information to the air spring and shock absorber to adjust the height and damping.
At this stage, the cloud chariot -A system of Tengshi N7 is still a semi-active suspension, strictly speaking. Why? Let’s take a look at its working process:
Readers, have you noticed that all the sensor information is passively obtained after driving? Even if the central control unit can output the adjustment strategy very quickly, it is still passive. Therefore, at this time, Yunqi -A is still considered as a semi-active suspension.
However, BYD will certainly not stop there, and "cloud preview" has appeared. Cloud preview is not exclusive to A, it belongs to all four suspension technologies mentioned above, and we can understand it as the PRO version of each suspension version (let’s call it PRO version for the time being), which is mainly viewed in combination with the vehicle model. For example, the version of Tengshi N7 with laser radar can upgrade the cloud preview. Its function is to identify the road characteristics in advance. It will scan the road information through the camera module and the laser radar, calculate the drop of 5-150m, and adjust the suspension in linkage.
At present, Tengshi N7 has not been upgraded to this function, but in the communication, engineers also revealed that they will release this PRO version of Yunbi -A when Tengshi N7 Intelligent Driving Edition is launched, so we have reason to believe that this active suspension will also be linked with intelligent driving, such as high-speed NOA, which can predict the curvature of the front curve in advance through navigation to adjust the suspension hardness.
● Overdeceleration brings surprises, and the low-frequency resonance needs to be improved.
Then, let’s talk about the actual feeling of Yunqi -A Standard Edition in the test scenario.
More exciting videos are all on the car home video platform.
Of course, there are advantages and disadvantages. I think it is mainly reflected in the following aspects.
First of all, the sports mode is not enough. When entering the sports mode, the air suspension of the vehicle is not linked, but the damping of the shock absorber is increased.
The second is that when passing through the washboard road, the back row occasionally resonates, and sitting in the back row will make you feel uncomfortable.
Write at the end:
The above is all my experience and content sharing of Yunqi -A this time. Let’s make a simple review and summary. N7′ s Cloud Web -A has a set of self-developed complete system architecture: it is composed of Cloud Web perception architecture, central processing unit, intelligent control technology and key components, and builds a complete architecture of perception, decision-making and execution. Among them, the central processing unit is the "central nerve" of Yunnian -A system, which can retrieve the signal data of all the sensing layers of the vehicle, actively perform high-speed calculation on the body posture and wheel load through the self-developed algorithm, and output the control strategy in real time.
Secondly, the function of Cloud -A of N7 does not include preview function when there is no optional high-level intelligent driving exclusive package, but it does not affect the realization and experience of the above functions such as height adjustment and damping adjustment of Cloud-A..
Third, Tengshi’s engineer said that the model I experienced this time is still a trial installation, so the second deficiency mentioned above will be improved. As for the first sport mode, they are already developing and updating, and will make comfort mode and sport mode more differentiated in the future. At the same time, they will also listen to the suggestions of car owners, and finally improve the quality of suspension and chassis through OTA. Let’s look forward to the future Tengshi N7! (Photo/Text car home Leng Xiaoyang)