On April 23, 2025, IM motors unveiled its "digital chassis-by-wire technology" at the Shanghai Auto Show, which is undoubtedly a major innovation in the field of smart cars. This technology breaks through the limitations of traditional mechanical architecture, not only brings a qualitative leap in vehicle handling performance, but also shows great potential in the integration of safety and intelligent driving, opening up a new path for the development of intelligent vehicles and leading the industry into a new era of "embodied intelligence".
Figure: IM Motors Automotive Drive-by-Wire Digital Chassis Technology Conference
Ⅰ Technological breakthroughs and performance improvements
IM Motors drive-by-wire digital chassis technology takes the X, Y, and Z three-way and six-degree-of-freedom digital fusion control of the vehicle as the core, realizing the leapfrog upgrade of vehicle motion performance. For a body that is nearly 5 meters long, the extreme turning radius of 4.69 meters is impressive, which is far more than any other car in its class. This is due to its breakthrough from the shackles of the traditional mechanical chassis, through the precise change of steering ratio, the steering wheel can be turned at a small angle at low speed to achieve large steering, making turning and parking more labor-saving; At high speeds, it adaptively reduces steering sensitivity, improving the safety of novices in high-speed driving. In addition, the "big and small brain deep fusion" architecture enables the vehicle to adjust the motion control in real time according to the environmental perception, whether it is sand, gravel and mud, steep slopes and sharp bends, or complex terrain such as road teeth, the vehicle can easily cope with it, realizing the freedom of all-terrain driving, and greatly expanding the vehicle's use scenarios and handling performance.
Ⅱ An all-round leap in safety
In terms of safety performance, IM Motors digital chassis technology is equipped with a full set of dual-redundant dry brake-by-wire systems, which makes the vehicle's braking response speed 2-3 times faster than that of traditional hydraulic systems, and the braking distance is shortened by 6%-8%. This significant improvement significantly reduces the risk of collision and provides a stronger guarantee for driving safety. What's more worth mentioning is the Grey Lizard Flat Stability Control System, which can accurately control the body attitude and ensure the stability of the vehicle even in extreme situations such as four-wheel puncture and high-speed corner puncture through multi-degree of freedom collaborative control of wire-controlled single-point braking, rear-wheel steering and digital drive. In addition, the wire-controlled digital chassis also has the function of isolating human misoperation, relevant statistics show that traffic accidents caused by driver misoperation account for up to 10%-15% every year, and this function of IM Motors effectively isolates such risks, and in the face of emergencies, it can also provide the ultimate guarantee for driving safety through the active safety emergency obstacle avoidance system.
Figure: The internal structure of IM Motors Automotive's drive-by-wire digital chassis technology
Ⅲ The ideal technical base for high-end intelligent driving
IM Motors's wire-controlled digital chassis technology has become the ideal motion control technology base for L3 and L4 high-end intelligent driving. It opens the degree of freedom control of the whole vehicle to the intelligent driving model, and through the human-machine decoupling design, it significantly improves the response speed and accuracy of the vehicle control, and the response speed of the vehicle control is increased by 30%-50% compared with the traditional chassis, and the instructions issued by the intelligent driving model can be more accurately executed. In scenarios such as automatic lane changes and following the car, the vehicle's movements are smoother and more natural, with almost no delay being felt. At the same time, the safety redundancy design of dual power supplies and dual ECUs fully meets the regulatory requirements of high-end intelligent driving, which greatly reduces the probability of intelligent driving accidents caused by electronic system failures. Through the deep integration with the intelligent driving model, the vehicle not only has the ability to think and make decisions, but also has the ability to act agilely, truly realizing "embodied intelligence" and creating a more intelligent and safe travel experience for users. In the actual road test, the vehicle equipped with the IM Motors wire-controlled digital chassis and the intelligent driving model has improved the traffic efficiency by 25%-30% compared with ordinary vehicles in complex road conditions, and the accuracy rate of actively avoiding pedestrians and non-motorized vehicles is also as high as 99%.
Ⅳ Technology implementation and market prospects
Relying on SAIC's more than 10 years of chassis technology research and development accumulation, IM Motors Automobile has formulated a clear "four-step" policy Strategically promote the implementation of wire-controlled chassis technology. In 2024, the first-generation technology will achieve 6 degrees of freedom fusion control and mass production of the whole vehicle on the IM Motors L6; In 2025, the second-generation technology will realize single-wheel braking by wire and rear-wheel steering with large corners, and will be mass-produced on the all-new IM Motors L6. In the fourth quarter of 2025, the third-generation technology equipped with front and rear pure steer-by-wire technology will be unveiled on the new flagship model of IM Motors, and IM Motors will also become the first brand to achieve mass production of pure steer-by-wire technology in the second half of this year. In 2026, the fourth-generation technology will be equipped with a trunk brake-by-wire system to realize the full-stack wire-control of the Lizard digital chassis, and combine it with the AI model to achieve predictive motion control, promoting IM Motors Auto to enter a new stage of "embodied intelligence".
The release and mass production of IM Motors digital chassis technology not only demonstrates the strong strength of IM Motors Auto in technological innovation, but also brings consumers a more futuristic, safer and smarter travel choice. With the continuous popularization and application of this technology, it is expected to promote the technological upgrading and development of the entire intelligent automotive industry, leading intelligent vehicles into a new era of "embodied intelligence", and its market prospect is worth looking forward to.
Overall, IM Motors Auto's digital-by-wire chassis technology is an epoch-making innovation, which shows excellent advantages and great potential in terms of handling performance, safety performance, and integration with high-end intelligent driving, setting a new benchmark for the development of smart cars and bringing revolutionary changes to the user's travel experience.
