"Ferrari also can't sleep well, and the Chinese began to roll the magneto-rheological suspension. In September this year, after the batch delivery of the magnetorheological suspension of Mengari products under Chaoshang Technology, netizens ridiculed like this.
Why do netizens say this?This starts with the "black technology" of the automotive industry - magnetorheological technology.
Source: Chaoshang Technology.
Magnetorheological technology is a kind of black technology that uses the characteristics of magnetorheological liquids to achieve fast, accurate and energy-saving magneto-induced deformation control. With its extremely strong levitation stability and high yield strength, magnetorheological technology is widely used in various industries. For example, in the aerospace field, magnetorheological materials are mostly used in the buffer of the landing gear, the flaps of the wing, the servo of the tail and other components to improve the performance and safety of the aircraft.
In the automotive industry, magnetorheological technology is being applied to suspension devices to develop suspension systems with adaptive vibration damping on different road surfaces. In this system, magnetorheological fluids are used inside the shock absorbers instead of ordinary hydraulic fluids. When the control unit gives a command, the built-in solenoid coil generates a magnetic field and acts on the magnetic particles in the magnetorheological fluid. Under the action of the magnetic field, the magnetic particles can quickly change the arrangement mode to form a chain-like structure, so that the viscosity of the liquid increases rapidly in milliseconds, thereby changing the damping characteristics of the shock absorber and realizing the real-time adjustment of suspension performance.
In this way, the magnetorheological suspension system can adjust the handling and comfort of the vehicle in real time according to the road conditions and driving needs, and enjoy the silky driving experience of the whole process, which is also its irreplaceable highlight in the field of suspension. In addition, it is able to dampen the pitch, roll and vertical vibrations of the vehicle, control wheel runout, and reduce end-of-travel shocksIn the case of emergency braking, the tires can be controlled to stick to the road surface, improve braking efficiency, shorten the braking distance, and achieve excellent safety and comfort experience.
However, due to technical barriers, high cost and other factors, magnetorheological suspension is mainly assembled into Ferrari, Cadillac, Porsche and other high-end models at this stage, and the relevant patents have been monopolized by foreign countries for a long time. According to Transparency Market Research in 2019**, in the next 15-20 years (i.e., 2034-2039), nearly half of the world's automotive shock absorbers will use magnetorheological technology. Standing at the inflection point of in-depth transformation and innovation of automobiles, how to break through the technical barriers of magnetorheological suspension has become the proposition of the times for automobile people.
Advanced material formulations and powerful computing power systems create the ultimate stability of the suspension
As an advanced material, magnetorheological fluids are different from ordinary hydraulic fluids in that they have a large number of tiny magnetic particles suspended in them. How to ensure the durability of these particles?How to ensure that the liquid can still operate stably in the extreme environment of high and low temperatures?This requires innovative material formulations.
Source: Chaoshang Technology.
Chaoshang Technology insists on deeply cultivating the field of magnetorheological suspension, and proposes solutions to the above problems: the magnetorheological fluid independently developed by Chaoshang Technology's R&D team has millisecond-level deformation response and excellent high and low temperature stability, which can provide a comfortable driving experience even in the cold winter and heat, and can cover a variety of environments with a wide bandwidth, whether it is an urban road section or a desert terrain.
After testing by a third-party organization, in the full speed section of the upward magnetorheological shock absorber without magnetic field, the increase rate of the damping force at minus 30 degrees relative to the damping force at room temperature is between 31% and 233%, while the increase rate of the damping force is between 105% and 926% compared to other magnetorheological shock absorbersAt high current (3A), the increase rate of damping force at minus 30 degrees relative to the damping force at room temperature is between 16% and 34% in the full speed section of the upward magnetorheological damper, and the increase rate of damping force of 130%-180% is higher than that of other magnetorheological dampers. After 8 million double-action endurance tests, there is no leakage, and the performance of the shock absorber is only slightly attenuated: the damping force attenuation is less than 25% at high current, and the zero field damping force is slightly increasedThe maximum response time of magnetorheological shock absorbers does not exceed 5 milliseconds.
Source: Chaoshang Technology.
Although magnetorheological variants are very advanced materials in their own right, they can only be used in conjunction with the rest of the system for the ultimate driving experience. "Materials, structure, control algorithms, and a range of systematic designs are all factors that affect suspension performance. Li Yancheng, chief scientist of Chaoshang Technology, said frankly.
The research and development of magnetorheological suspension is usually based on the performance requirements of the vehicle, that is, it depends on the specific application of the magnetorheological suspension to which scenarios and road conditions are used to design the suitable change range of the magnetorheological shock absorber. In this link, Chaoshang Technology has a rather rigorous calculation algorithm as a support. In addition, is there any abnormal sound when switching large currents?How to design the power consumption, capacity, and performance of the ECU?What is the overall performance of the suspension system in different road conditions?In the process of designing the magnetorheological suspension, the R&D team of Chaoshang Technology has carried out a comprehensive consideration of technology, systematization and engineering.
For the tuning market as well as off-road enthusiasts, magnetorheological suspension is a more perfect choice. ”
Going deep into the off-road modification market, the R&D team of Chaoshang Technology has developed an autonomous road recognition system. It is equivalent to a smart "brain", which can monitor the road surface conditions in real time, and conduct independent analysis and road surface judgment according to the body status and unsprung excitation signal, so as to intelligently switch to the algorithm suitable for the road surface. The offline of this system breaks the situation that off-road vehicles need to manually switch driving modes, and enters a new stage of all-terrain adaptation, which meets the dual needs of urban road running and off-road challenges. A more stable, more accurate and more comfortable driving environment enables off-road novices to be fearless of complex road conditions, boldly get on the car, and drive easily.
Source: Chaoshang Technology.
The self-developed magnetorheological suspension can keenly monitor the attitude of the body, adjust the suspension damping coefficient in real time, independently control the softness and hardness of the four-wheel suspension, and well inhibit the forward and backward lean and turning roll of the body, providing higher ultimate performance for the vehicle chassis system, and taking a key step for the local brand to break through the technical barriers. In May this year, Chaoshang Technology built the first production line of magnetorheological shock absorbers in China to achieve a product breakthrough and deliver the first set of magnetorheological off-road vehicle suspension products.
Focus on the mass production and delivery of modified off-road, and expand the product matrix at multiple points to release scientific and technological innovation
In recent years, the tourism market has continued to heat up, according to data from the China Tourism Academy, this summer (June to August), most destinations received the highest number of tourists in history, and the number of domestic tourists reached 183.9 billion passengers, tourism revenue reached 121 trillion yuan, the tourism market has seen the phenomenon of "business format to the downstream of the industrial chain, space to remote destinations" at the same time. In the face of the increasingly hot self-driving travel market, the market demand for modified off-road vehicles is huge.
At the same time, favorable policies for the modified car market have been introduced. In October this year, the Ministry of Commerce, the Ministry of Industry and Information Technology, the Ministry of Communications, the Ministry of Culture and Tourism and other nine ministries and commissions jointly issued the "Guiding Opinions on Promoting the High-quality Development of the Automotive Aftermarket", which clarified the overall goals and main tasks of the development of the automotive aftermarket, systematically deployed to promote the high-quality development of the automotive aftermarket, optimize the circulation environment of auto parts, and promote the steady growth of the automotive aftermarket.
Based on this background, Chaoshang Technology focuses on the off-road vehicle modification market, created a branch of Mangari in August this year, launched the Ultra Magrheo brand, and signed a modification order contract of hundreds of millions of yuan with Aix in September this yearIn October of this year, two magnetorheological modification kits for the tank 300 off-road vehicle were delivered: the universal version and the desert version. Among them, the universal version is aimed at light off-road enthusiasts, taking into account the comfort of paved roads and the stability of mountain off-road handlingThe desert version is aimed at off-road players, focusing on desert off-road control and comfort.
Li Yancheng said that the company has built a mass production workshop and quality inspection laboratory with IATF16949 preliminary examination qualification, and has become the first domestic enterprise that can design and produce magnetorheological suspension systems from materials, devices to control algorithms. In the future, the company will launch more application scenarios in terms of full-driving operations, and provide more scientific and technological intelligence support for high-end manufacturing.
Source: Chaoshang Technology.
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