As early as April this year, BYD released the world's first new energy exclusive intelligent body control system - Yun Yuan (nian), at the publicity meeting to introduce this set of technology is very "mysterious", it is not a single technology, but BYD's completely independent development of the new energy platform body control system synthesis. According to different hardware bases and product positioning, it is also divided into various forms such as Yunnan-C, YUNLIN-A, YUNLIN-P, YUNLIN-X, etc., to improve the driving experience of consumers from many aspects such as comfort, handling, safety, and off-roading, which makes people who have not driven it itch in their hearts.
No, BYD organized a test drive party for the whole family of Yunran, which made many people, including me, addicted!I will start from the experience of each cloud system and introduce it to you separately.
From luxury to frugality, let's first introduce the most popular Yunlin-C, which is the full name of intelligent damping body control system, which is equipped on models with electromagnetic suspension, such as BYD Song L, BYD Han, BYD Tang, Denza D9, and Denza N8. It is to adjust the damping by controlling the shock absorber solenoid valve to realize the stepless adaptive adjustment of the damping. Compared with the traditional passive suspension, the Yunnan-C has achieved a "qualitative" improvement in driving comfort. While satisfying the ultimate comfort, the cloud-c also takes into account the handling of the vehicle, breaking the limitation of the traditional passive suspension tuning and achieving the perfect combination of comfort and handling.
At present, some BYD Han models on the market can already upgrade the Yunnan-C system through OTA, but there needs to be a hardware as a support, that is, DISUS-C. I have driven a BYD Han with DISUS-C before, and in terms of experience, the Yunlin-C system has obviously been optimized, and it feels more eye-catching.
In this experience, the most obvious thing is that the phenomenon of looking up and nodding is much better, whether it is braking or throttle acceleration, there will be more or less certain body dynamics in the past, and the feeling of tires dragging the vehicle forward is obvious, and with Yunlin-C, at this moment, through the microsecond computing system response, the rapid adjustment of shock absorber damping is realized, and the body attitude is forcibly controlled.
When we drive through a section of slate bridge, the road surface is full of potholes, and when the Yunnan-C system recognizes that the vehicle passes through the bumpy road, it will automatically adopt the comfort control strategy of high-frequency and small damping, and obviously feel that the chassis becomes "soft", buffer the road surface excitation, and inhibit the vertical movement of the body.
We also walked a mountain road, to be honest, if there is no confidence in the car, high-speed cornering is still easy to make up for the brakes, and the use of Yunnan-C system BYD Han, the system can also automatically identify the vehicle in a fast corner, will automatically use the low-frequency large damping control strategy, so that the chassis becomes "hard", obviously feel that the outside of the chassis can hold, suppress the body roll, to ensure the stability of vehicle handling, very interesting.
The Yunnan-A can be understood as an intelligent air body control system, which is equipped on models with air suspension, and is currently used in the Denza N7 in the BYD series. Compared with the Yunlin-C, the structure of the Yunlin-A is much more complex, through the precise perception technology of the Yunlin, the Yunlin intelligent computing center makes quick decisions, outputs precise control strategies, controls the air spring intake and exhaust, stiffness conversion valve, shock absorber solenoid valve and other adjustment height, stiffness, damping, etc., realizes the dynamic adjustment of the body control, and makes the vehicle have the ultimate comfort, stability, support and passability. The Yunnan-A can achieve height adjustment, stiffness adjustment, damping adjustment and intelligent active adjustment of the side seats.
I also had the pleasure of following the team to experience the Denza N7 of the Yunlin-A system, and to be honest, I think the Yunlin-A has a more advanced sense compared to the Yunnan-C. The most prominent is to deal with bumpy roads, such as speed bumps, continuous potholes, the adaptability of Yunlin-A is very good, the damping adjustment of Yunlin-A realizes stepless adaptive adjustment of damping through electronically controlled shock absorbers, and in comfort mode, the system responds to impulse road surface, random road surface and other road conditions with high-frequency and small damping, so as to improve the overall smoothness of the vehicle. In Sport mode, the system responds to emergency braking, full-throttle acceleration, high-speed cornering and other working conditions with low frequency and high damping, improving vehicle handling. Moreover, it can improve the pitch of the vehicle, and there will be no feeling of motion sickness when braking frequently on congested roads.
At first, I thought it was just the effect of Yunlin-A, but then I listened to the narrator's introduction, and it turned out to be Yunlin-A + ICVC intelligent vector control.
This system is very interesting, the introduction of feedforward control and feedback control, through the call of the drive system, braking system and suspension system, can realize the change of the vehicle's driving style, and real-time monitoring and adjustment of the vehicle's yaw response, so that the vehicle dynamics are in the best state.
Of course, the Yunnan-A also has height adjustment and stiffness adjustment. The height adjustment can be adapted to different vehicle categories, with a suspension adjustment stroke of up to 150mm, and more than 10 functional modes are provided for active adjustment. Stiffness adjustment can provide different stiffness schemes according to the needs of the vehicle model. I didn't experience much of this, so I skipped it.
As mentioned above, it is difficult to make a difference from luxury to frugality, because after experiencing the Yunlin-P, all the chassis control and suspension control systems seem lackluster. The Yunnan-P is a top-of-the-line body control system built specifically for flagship and off-road models, and is currently available on the Yangwang U8 and Formula Leopard 5.
This system is quickly decided by the Yunyuan Accurate Perception and Intelligent Computing Center, and the control strategy is output, and the dynamic adjustment of the body control is realized by controlling the oil intake of the shock absorber, the damping control valve, and the stiffness control valve. Yunlin-P is the world's first intelligent hydraulic body control system that integrates the three core technologies of mechanical, hydraulic and electronic control. It also has innovative functions of four-wheel linkage and camping adjustment to meet the ultimate off-road needs of users.
With the test drive team, we drove the Yangwang U8 to cross obstacles in the wild, and it is no exaggeration to say that the Yangwang U8 with the blessing of this system can "take the road that others can't walk, and pass the hurdles that others can't pass".
The most exaggerated aspect of the Yunnan-P is the height adjustment, the suspension adjustment stroke can reach 200mm, which can not only realize the synchronous lifting capacity of four wheels, but also realize the independent lifting of a single wheel. The lifting force of the system reaches 5 tons, which meets the needs of high-intensity off-road continuous lifting. The Yunnan-P also provides users with multi-level height adjustment to achieve a variety of functions such as speed adjustment, convenient pick-up, and intelligent welcome.
Like the Yunnan-A, the Yunnan-P also has a stiffness adjustment module, but it has multi-level stiffness control in terms of function, which can realize the highest stiffness adjustment. In daily driving, the Yunnan-P is at the first level of stiffness, bringing users a comfortable driving experienceWhen the vehicle is in intense driving conditions such as rapid acceleration and deceleration, high-speed cornering, etc., the second-level stiffness is triggered, and the stiffness can be increased by 200% instantaneously, which further improves the support of the vehicle and achieves better handling performanceWhen the vehicle is in an emergency such as high-intensity off-road or encountering a flying slope fall, the ** stiffness can be triggered in an emergency, effectively reducing the impact load by 50% and ensuring the safety and stability of the system.
Yunlin-p realizes refined output damping control under different working conditions through the continuous damping control module. While ensuring the vehicle's super off-road performance, it can calmly cope with non-paved roads such as washboard roads, gravel roads, pothole roads, mountains, and mud roads, greatly improving comfort.
At the same time, as a flagship-level system, the Yunnan-P also has a four-wheel linkage function, which is specially designed to deal with the suspended semi-unbalanced state of single wheel and diagonal wheel under extreme off-road conditions. The four-wheel linkage function can deliver oil to the suspension wheel shock absorber, lengthen the suspension stroke, improve the wheel stickiness and the sense of balance of the vehicle, and ensure the effective output of four-wheel power. The four-wheel linkage function of Yunlin-P can make the wheel difference of the vehicle reach a maximum of 620mm, and the tracking index RTI value of the whole vehicle can reach more than 600, which has the ultimate off-road performance. There is also an interesting function of camping leveling, real-time monitoring of the body attitude, in the stationary state can be adjusted by the height of a single wheel, so that the plane of the body and the direction of gravity is always vertical, so as to achieve the level in the car, which can meet the normal rest and entertainment in the car when the user is camping in the wild, without the interference of the terrain.
This Yun Ran family experience, really opened our eyes, some friends said, in addition to improving comfort and control, what other role does Yun Ran have?I think the premise of comfort and handling is safety, because the cloud technology brings the safety ability of the whole vehicle to the upgrade, so on this basis, we can achieve better comfort and handling!