Off-Road Suspension Layout for Direct Torsion Bar Force Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing off-road vehicle designs suffer from instability due to indirect and delayed application of the reaction force generated by the front torsion bar, which affects the vehicle's stability and handling.
Innovation Solution
The off-road vehicle incorporates a revised suspension system with a torsion bar assembly that includes a front torsion bar rotatably mounted on the frame, connected to the upper rocker arms via links, and a rear torsion bar assembly located between the lower and upper rear rocker arms, enhancing the directness and speed of the reaction force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the front torsion bar is mounted in the existing position and layout, then the structure is simpler, but the reaction force is delivered indirectly and slowly, damaging vehicle stability
Solution Approach 1:
The front torsion bar is repositioned from a lateral/longitudinal mounting configuration to a vertical mounting configuration above the front upper rocker arms. This dimensional change allows the reaction force to be delivered more directly to the rocker arms, improving force transmission efficiency and vehicle stability without significantly increasing overall structural complexity
Solution Approach 2:
Links are introduced as intermediary components to connect the vertically mounted front torsion bar to the front upper rocker arms. These links serve as mediators that transmit the reaction force generated by the torsion bar directly to the rocker arms, ensuring efficient force delivery while maintaining structural flexibility
2Speed
If the front torsion bar reaction force is applied indirectly, then the suspension structure has more design flexibility, but the force delivery is delayed and stability is compromised
Solution Approach 1:
The front torsion bar is repositioned from a lateral/longitudinal mounting configuration to a vertical mounting configuration above the front upper rocker arms. This dimensional change allows the reaction force to be delivered more directly to the rocker arms, improving force transmission efficiency and vehicle stability without significantly increasing overall structural complexity
Solution Approach 2:
The front torsion bar is pre-positioned in a vertical orientation above the rocker arms, ready to generate and deliver reaction force immediately when the wheel encounters terrain irregularities. This preliminary positioning ensures that the force delivery mechanism is already in place and can respond instantly, improving both speed and steering response
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration improves the stability and handling of the off-road vehicle by ensuring a more direct and immediate application of the reaction force, reducing the likelihood of leaning and enhancing steering performance.
Implementation Method 1
The front torsion bar assembly is rotatably mounted on the front frame portion and at least partially located above the front upper rocker arms and movably connected by links to the front upper rocker arms
Data Source
AI summary
An off-road vehicle includes a frame; front and rear wheels; a front suspension assembly; a front torsion bar assembly, a rear suspension assembly and a rear torsion bar assembly. The front suspension assembly comprises a front lower rocker arm, a front upper rocker arm, and a front wheel shaft support assembly mounted between the front lower and the front upper rocker arms. The front torsion bar assembly is located above the front upper rocker arm, and is movably connected to the front upper rocker arm. The rear suspension assembly comprises a rear lower rocker arm, a rear upper rocker arm, a control arm assembly, and a rear wheel shaft support assembly mounted between the rear lower and rear upper rocker arms. The rear torsion bar assembly is located between the rear upper and lower rocker arms, and is movably connected to the rear upper rocker arm.