H-Frame Suspension Layout for Roll Stiffness and Lateral Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional commercial vehicle suspension systems face challenges in achieving optimal roll stiffness and lateral stability due to increased complexity, weight, and cost associated with conventional lower torque rods and anti-roll devices.
Innovation Solution
The implementation of H-frame devices and systems, which eliminate the need for conventional lower torque rods and anti-roll devices, providing a simplified suspension system that combines wheel/axle movement control and roll control, while allowing for adjustable roll stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lower torque rods and anti-roll devices are used, then wheel/axle movement control and roll control are achieved, but device complexity increases
Solution Approach 1:
The H-frame device merges the functions of lower torque rods and anti-roll devices into a single integrated component. The H-frame's horizontal member connects left and right suspension assemblies while its vertical members provide structural support, simultaneously achieving wheel/axle movement control and roll control without requiring separate devices.
Solution Approach 2:
The H-frame device serves multiple functions: it acts as a structural support element, provides lateral linkage for wheel/axle movement control, and functions as an anti-roll device. This multi-functionality eliminates the need for separate conventional components while maintaining all required control functions.
2Reliability
If conventional lower torque rods and anti-roll devices are used, then wheel/axle movement control and roll control are achieved, but system weight increases
Solution Approach 1:
By combining multiple functional components into the single H-frame device, the total material required is reduced. Instead of manufacturing separate lower torque rods and anti-roll devices, the H-frame uses integrated structural members that accomplish all functions with less overall material, thereby reducing system weight.
3Reliability
If conventional lower torque rods and anti-roll devices are used, then wheel/axle movement control and roll control are achieved, but manufacturing cost increases
Solution Approach 1:
The integration of multiple functions into the H-frame device reduces the total number of parts that need to be manufactured, assembled, and quality-checked. This simplification of the bill of materials and assembly process directly reduces manufacturing costs while maintaining all required control functions.
Solution Approach 2:
The H-frame device's multi-functionality means that a single component performs the work of multiple conventional parts. This reduces inventory requirements, simplifies supply chain management, and lowers overall system cost while achieving the same reliability in wheel/axle movement control and roll control.
4Adaptability or versatility
If adjustable roll stiffness is implemented, then roll control is optimized for different vehicle characteristics, but device complexity increases
Solution Approach 1:
The H-frame device incorporates adjustable features that allow roll stiffness to be modified based on vehicle characteristics and usage conditions. This adjustability is integrated into the H-frame's structure rather than requiring separate adjustment mechanisms, maintaining simplicity while providing adaptability.
Data Source
AI summary
Vehicle suspensions and methods involving the same may implement an H-frame device. An H-frame device may include a first sideleaf, a second sideleaf, and a crossleaf. The crossleaf may extend between the first sideleaf and the second sideleaf. The sideleaves may be configured to attach to frame hangers and axle brackets of a vehicle's suspension/wheel assembly. H-frame devices may provide both wheel/axle movement control and anti-roll functionality for a vehicle's suspension system.