Hydraulic Damping Reinforcement Device for Vehicle Lateral Stiffness
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Solution Overview
Problem
Existing vehicle reinforcement devices, such as strut tower bars, face challenges in space constraints within the engine compartment, making installation and maintenance difficult, and can reduce legroom when positioned in the passenger compartment, while also transferring vibrations to the chassis.
Innovation Solution
A vibration-damping reinforcement device with an elongated profile and a hydraulic damping force generation component between its ends, allowing for removable mounting to the vehicle's underside or bumper reinforcement, positioned outside the engine and passenger compartments to enhance vehicle handling without altering the body structure or reducing serviceability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the reinforcement device is mounted within the engine compartment, then lateral stiffness is improved, but engine serviceability deteriorates
Solution Approach 1:
The reinforcement device is repositioned from the engine compartment to the passenger compartment, utilizing the longitudinal space beneath the floor pan. This dimensional relocation allows the reinforcement function to be maintained while eliminating interference with engine maintenance activities.
2Strength
If the reinforcement device extends across the upper portion of the engine compartment, then lateral stiffness is improved, but serviceability of engine equipment deteriorates
Solution Approach 1:
The reinforcement device is extracted from the engine compartment environment and relocated to the passenger compartment. This separation removes the conflicting spatial requirements, allowing engine equipment to be serviced without obstruction from the reinforcement structure.
3Strength
If the reinforcement device is positioned in the passenger compartment, then lateral stiffness is improved, but leg room deteriorates
Solution Approach 1:
The reinforcement device utilizes the longitudinal dimension beneath the floor pan rather than occupying transverse space within the passenger compartment. This strategic use of available three-dimensional space provides structural reinforcement without encroaching on passenger leg room.
4Strength
If the strut tower bar couples directly to the strut towers, then lateral stiffness is improved, but vibration transmission to chassis increases
Solution Approach 1:
A vibration isolation component is introduced as an intermediary between the reinforcement device and the vehicle frame. This mediator absorbs and dampens vibration energy, preventing its direct transmission to the chassis while maintaining the lateral stiffness function of the reinforcement structure.
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
The solution effectively improves vehicle handling by providing lateral stiffness while maintaining engine accessibility and passenger legroom, and effectively dampens vibrations without transferring them to the chassis.
Implementation Method 1
A hydraulic damping force generation component is positioned between the first end and the second end. The hydraulic damping force generation component resists movement tending to separate or to bring together the first and second ends.
Data Source
AI summary
A reinforcement device for a vehicle is formed in a slender shape and comprises a medial region with a hydraulic damper. The damper generates a damping force against deformation in the longitudinal direction. The longitudinal direction is defined as a lateral direction of the associated vehicle body. The reinforcement device is removably mounted at both ends to a frame of the vehicle.