Distributed Drive Axle with IESS Delivers Outstanding Stability on Snow and Variable-Adhesion Pavement

Modern commercial electric vehicles require reliable chassis stability control when traveling on icy, snowy or uneven-adhesion roads. Our distributed drive axle equipped with proprietary IESS electronic stability system has completed comprehensive real-vehicle verification under multiple harsh working conditions to upgrade the safety performance of electric drive axle, electric truck axle and electric bus axle based e axle systems.

A full set of road verification was finished covering snow terrain and special split-adhesion pavement:

Snow single lane change: stable passing speed up to 90km/h

Snow double lane change: stable passing speed up to 70km/h

Snow S-type slalom test: stable passing speed up to 60km/h

J-shaped corner test: stable passing speed up to 65km/h

Joint pavement, μ-split road and checkerboard adhesion pavement: steady running at 60km/h

The IESS system dynamically adjusts wheel torque in real time via the distributed axle's independent wheel drive capability, effectively suppressing vehicle sideslip and oversteer on low-friction surfaces. This core optimization greatly enhances driving safety for heavy-duty trucks and large passenger buses running in cold and complicated road areas.

For OEMs looking for mature e axle systems, the IESS-equipped distributed drive axle shortens vehicle development cycles and improves whole-car passive and active safety, realizing the goal of simpler vehicle development and production.