Jeep Cherokee FRAME, SUSPENSION AND STEERING
World-class architecture
The Compact U.S. Wide (CUS-wide) platform is the basis for the underpinnings of the new Jeep Cherokee. This platform’s proven modular architecture means many models can be built using the same basic underpinnings. The result is better quality and reliability as well as lower costs, less development time and tooling. The architecture Cherokee is built on is comprised of common, modular and interchangeable components and allows for modularity of the wheelbase, front track, rear track, front overhang, length and width across vehicle lines.
The new Jeep Cherokee’s body structure has a high-strength steel content of roughly 65 %. Hot stamped-, high-strength- and ultra-high-strength steel are used to construct strong, lightweight, solid vehicle architecture.
New on-road performance
The new Jeep Cherokee’s premium on-road manners are a result of a number of efforts by Jeep engineers. The front independent suspension with MacPherson struts provides 170 mm of travel while the rear independent multi-link suspension provides up to 198 mm of travel for better articulation. The isolated rear cradle, aluminum front cross member and superior torsional rigidity deliver customers a quieter and smoother ride with improved handling characteristics.
The electronic power steering system (EPS) improves fuel efficiency and contributes to the Cherokee’s nimbleness with a turn circle radius of approximately 11 m in 4×2 models, 11.6 m in 4×4 models and 12 m for the Trailhawk trim level, the most capable off-road model in the new Cherokee lineup.
With EPS all of the power assist is provided via an electric motor system rather than a traditional hydraulic system. Because the system is fully electronic, the driver experiences optimal steering effort at all vehicle speeds, and there is less noise and better fuel efficiency since there is no parasitic loss from a power steering pump.
The boost, or assist, is variable and speed sensitive, responding to sensors monitoring steering torque, steering wheel speed and angle and vehicle speed. The steering system is fully integrated with the vehicle’s ESC system and helps to compensate in split-traction, torque steer and road camber situations.