It's no exaggeration to say that 80% of people don't know what manipulation is.
Driven by the needs of the younger generation of car buyers, there are more and more sports attribute models on the market, from the design concept to the engine performance parameters, all of which are talking about the word "sport".
Whenever you talk about movement, you must talk about control; when you talk about control, you must talk about the type of suspension and the parameters of the engine. But is that really the only thing that gives the vehicle a "playable" soul?
Non also. Engine parameters, chassis suspension is only floating on the surface of the "control", the real core of the control lies in the matching and tuning of the entire chassis system, involving all aspects, even in the eyes of professional engineering, the vehicle dynamics closely related to chassis tuning can be regarded as a "metaphysics".
Therefore, the various brands and models on the market are very different in terms of chassis tuning. For example, some models that focus on sports are more just "visual" coupes, helpless to the disadvantages of the vehicle architecture and the mismatch of chassis tuning, and the driving texture and coupe attributes are not related.
Until the emergence of UNI-V, as the first car based on the Ark architecture, it has excellent handling performance, control quality, with advanced technical strength to perfectly grasp the chassis tuning of the "metaphysics", A+ class five-door hatchback coupe UNI-V broke the embarrassing situation of "external movement and internal moderation", and the Chinese sports coupe finally has a new benchmark.
Advanced genetic algorithms to select the optimal hard-point design scheme
The core of whether a car is moving lies in the quality of the control, and the key to the control lies in the strength of the chassis. Of course, the suspension plays an important role in this.
At present, most models are using multi-link independent suspension, and the design of multi-link is the core of the design of the suspension hard point (the spatial position of the connection point of each pole of the suspension), which is directly related to the driving texture of the whole vehicle, which is why many models obviously use multi-link suspension, and the actual driving experience is not as good as the key reason for the torque beam.
As the first sedan of the Ark architecture, as early as the beginning of development, the integration of people and vehicles was genetically integrated, which was the lowest personality given by the Ark to UNI-V. To find the best hard point design for the UNI-V suspension, the Ark team used advanced genetic algorithms.
The word goes: genetic algorithms are a way to search for the optimal solution by simulating the process of natural evolution. The algorithm uses computer simulation operations to transform the problem solving process into a process similar to the intersection and mutation of chromosomal genes in biological evolution.
In the process of optimization of the suspension hard point, Ark engineers selected the optimal hard point design scheme through the genetic algorithm after tens of millions of iterations, and obtained a hard point design scheme with both comfort and extreme motion potential, fundamentally optimizing the K&C characteristics of the suspension, giving UNI-V better body motion control and more sensitive dynamic response.
Topology optimization enhances lateral rigidity of the body, and DTV increases the quality of handling
Straight line acceleration is not bad, the essence of the control quality lies in the corner performance, and the core of the corner performance is the roll stiffness (refers to the suspension system's control of the body attitude under a certain body inclination angle).
Therefore, how to control the roll stiffness has become the key to the quality of the control. This depends on the design of the roll arm (the distance from the vehicle's center of gravity to the roll axis, the longer the distance, the more serious the roll, the shorter the distance, the better).
UNI-V equipped with the blue whale engine, the length is reduced, the crankshaft center is reduced, the inclination angle optimization of the power arrangement is optimized, and the R point optimization of the seat arrangement is combined, and the lower lying posture makes the center of gravity of the vehicle fall and adduction, so that the distance from the center of gravity of the vehicle to the roll axis is reduced, which can reach an excellent level of about 485mm.
Also thanks to the structural advantages of UNI-V based on the Ark frame integration of the previous generation of products, the body topology of the car body is carried out, the optimal transmission path of the body is identified, and the high stiffness body is obtained, and the high strength steel of the whole vehicle accounts for more than 70%, making the turning control of the whole vehicle more sensitive, the response faster and more direct, of which the steering delay is reduced by 17.4%, the response direct sense is increased by 21.4%, and the horizontal response lag time is shortened by 21.4%.
In addition, UNI-V is equipped with the DTV dynamic torque vector control system for the first time.
When driving in a more intense corner, the controller can intelligently distribute the torque difference between the inner and outer wheels through real-time control of the torque of the inner and outer wheels of the curve, so as to accurately control the driving trajectory according to the driver's intention, which creates the excellent cornering performance of UNI-V, and passes the IS0 3888-2 elk test at a speed of 76km/h, and the body posture is calm and stable.
Specially tuned blue whale power, X-pedal technology calibrated to play the limits of performance
If the design of the suspension hard point and the matching of the roll stiffness are the key to the Ark architecture to empower the UNI-V's handling quality, then the special blue whale power it carries is the core advantage of the UNI-V's handling performance.
What is a special tune? The X-Pedal calibration strategy is one of the specials!
In order to further ensure the linear output of power, UNI-V is different from the traditional torque-based approach, but uses the most direct acceleration as the power matching benchmark to maximize the power level of the engine.
According to the "Weber Fischner's law (the law indicating the relationship between psychological quantities and physical quantities)", X-pedal lean calibration designs the user to ensure that the vehicle can always be accelerated as the user wishes under 6 mainstream use scenarios and 17 different working conditions, so as to achieve the effect of human-vehicle integration. This is also an important aspect of the "human-vehicle integration" that the Ark architecture has given to UNI-V.
In terms of gearbox matching, UNI-V chose Changan to develop and verify the Blue Whale 7-speed wet dual-clutch transmission for 8 years. It is worth mentioning that the gearbox has innovatively developed "transient torque control technology" to improve the clutch control accuracy, eliminate low-speed gear shifting setbacks, and achieve a smooth and smooth acceleration.
At the same time, UNI-V's driving tuning also integrates an intelligent pre-downshift strategy, relying on massive driving behavior data to predict the user's acceleration intention, adapt torque in advance, and eliminate the frustration caused by the shift time difference. As a result, the UNI-V achieved zero-hundred-hundred-by-7.3s acceleration with 1.5T power.
Run fast, but also brake.
Based on the AMS test specifications, UNI-V in the professional Chongqing West Automobile Test Field, for the braking thermal performance of the rigorous test, through the rapid acceleration and deceleration in the case of the requirement of effective performance difference of not more than 4 meters, UNI-V braking distance and pedal travel without significant attenuation, to ensure excellent braking performance, 100-0km/ h braking distance of 35.6m.
Write at the end:
Some people say that the emergence of UNI-V, Chinese cars have a moat.
The evaluation is very high, but the author believes that UNI-V is worthy of the title of "Chinese car moat", the Ark architecture is the foundation of UNI-V, which gives UNI-V excellent mechanical quality and extreme sports potential, so that consumers can see the quality and strength of Chinese cars, give consumers the confidence to choose Chinese cars, and also let Chinese brands have a new breakthrough in the car market to attack joint venture brands.