In a groundbreaking development, Schaeffler, a leading innovator in industrial technology, has unveiled a revolutionary mechatronic rear axle steering system designed for electric SUVs. Although the renowned vehicle manufacturer that introduced this pioneering technology remains unnamed, the impact of Schaeffler’s innovation on urban mobility and driving dynamics is indisputable.
The newly introduced rear axle steering system redefines the driving experience in city traffic by enhancing maneuverability, bolstering stability during lane changes, and simplifying parking maneuvers. This transformative technology, based on Schaeffler’s proprietary planetary roller gear, represents an exceptional achievement in precision mechanical engineering, setting a new standard in the automotive sector.
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Central to this technological marvel is the ingenious planetary roller gear, a testament to Schaeffler’s prowess in in-house industrial technology operations. This world-first innovation boasts compactness, lightweight construction, and a remarkably quiet operation, making it an ideal fit for seamless integration into vehicles. By harnessing this innovation, Schaeffler has secured its position as a supplier of choice, garnering interest from various car manufacturers eager to adopt this game-changing steering system in their upcoming vehicle models.
Clément Feltz, Head of Chassis business division at Schaeffler, emphasized, “Thanks to its optimized inner design, our rear-wheel steering system is more compact and requires less installation space in the vehicle. As a result, automakers can save up to 15 per cent in weight compared to alternative systems.” This optimization not only contributes to weight reduction but also addresses the acoustic aspect, ensuring a quieter driving experience, particularly in the realm of electric vehicles known for their serene operation.
While rear-axle steering systems are not new to the electric vehicle landscape, as seen in models like the Mercedes EQE and EQS, Schaeffler’s innovation stands out due to its novel planetary screw drive architecture. This departure from the conventional trapezoidal screw drive is underpinned by the precision mechanics derived from Schaeffler’s own industrial technology, resulting in a compact, hushed, and lightweight system that seamlessly integrates into diverse vehicle models.
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The innovative rear axle steering system comprises two pivotal subsystems. At its core lies a meticulously engineered mechanical system featuring the groundbreaking planetary screw drive. Accompanying this is a robust power pack housing essential components such as electronics, electric motor, and software. This integrated approach to steering technology not only yields a reduced steering radius but also significantly improves maneuverability, a particularly beneficial trait for electric vehicles with underbody batteries and extended wheelbases.
Enthusiasm for Schaeffler’s rear axle steering innovation extends beyond its inaugural customer. Several automakers have expressed keen interest in integrating this advanced system into their upcoming vehicle offerings, promising a transformative impact on urban driving and the electric vehicle landscape. With further models featuring Schaeffler’s trailblazing technology set to hit production lines in 2023 and 2024, the automotive industry is poised for a new era of enhanced maneuverability, stability, and driving comfort.
