Shulou(Shulou.com)11/24 Report--

CTOnews.com October 25 news, according to FAW Hongqi official news, transfer case four-wheel drive control technology is one of the key technologies to improve the traction and stability performance of the whole vehicle, this technology has been monopolized by foreign enterprises for a long time, restricting the high-end development of independent brands.

The System Integration Development Department of the New Energy Development Institute of FAW R & D Headquarters has completed the independent development and verification of the intelligent four-wheel drive control technology of the transfer case for 2 years, breaking the monopoly of foreign technology, realizing the self-reliance of high-level science and technology, and assisting the application of Hongqi independent transfer case products.

▲ According to the introduction of FAW Hongqi, FAW independent transfer intelligent four-wheel drive control technology observes the longitudinal and lateral stability state of the vehicle in real time, realizes the dynamic distribution of driving torque between the whole vehicle shafts through transfer torque control, completes the three innovative functions of four-wheel traction, lateral stability and intelligent sliding, and significantly improves the traction and stability performance of the vehicle. This technology will be equipped with many models of Hongqi in the future.

CTOnews.com learned that FAW uses preload control based on road condition recognition and feedback control based on tire longitudinal slip to realize the four-wheel drive traction control function under full working conditions. Under the premise of avoiding steering braking, NVH and high energy consumption, FAW exerts the strongest traction performance of four-wheel drive, with the utilization rate of adhesion coefficient of low attached road surface above 90%, and the docking stable acceleration of 5.4m / s2 (31.7% better than the benchmark model).

Limit 4WD lateral stability control function: quickly adjust 4WD torque distribution according to vehicle steering sideslip state, improve vehicle steering push or tail swing phenomenon, improve vehicle limit handling performance, accelerate steering neutral on snow surface, increase hunting speed by 6.03%, and reduce steering correction amount of snow ring Tip-out driver by 60%;

Intelligent four-wheel drive sliding control function: realize dynamic distribution of engine drag torque through active control of four-wheel drive transfer case, avoid single-axis locking, improve vehicle low-attached sliding stability, realize stable deceleration of 0.7m / s2 on ice sliding (40% better than benchmark model), and peak yaw rate is less than 0.5 (°)/s.

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