Cast Aluminum Front Wall Module for Stiffness and Space Use
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Solution Overview
Problem
Existing front wall modules for motor vehicles lack optimal installation space utilization and accident behavior, particularly in terms of weight and structural stiffness.
Innovation Solution
A front wall module featuring a cast aluminum structural part with a planar carrier structure that integrates additional components, utilizing a diecast or foamed cast aluminum design with load path-compatible reinforcement and injection-molded plastics for reduced weight and enhanced functionality, allowing for improved structural depth and integration of functions like instrument panel support and bearing blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If shaped sheet metal parts are used for the front wall, then the vehicle body can be prefabricated in a liquid-tight manner with a stiff structure, but the specific weight is high
Solution Approach 1:
The patent changes the material parameter from steel sheet metal to aluminum cast parts, achieving a reduction in specific weight while maintaining structural stiffness through the inherent properties of aluminum and optimized casting geometry
Solution Approach 2:
The patent employs composite construction by integrating multiple functional shapes into a single cast aluminum carrier structure, combining different material properties and structural functions in one optimized component that reduces overall weight while maintaining stiffness
2Strength
If shaped sheet metal parts are used for the front wall, then a stiff structure is achieved, but installation space utilization is limited
Solution Approach 1:
The patent merges multiple separate functional components (instrument panel support, bearing blocks, reinforcement elements) into a single integrated cast aluminum carrier structure, enabling better utilization of installation space while maintaining structural stiffness through optimized geometry
Solution Approach 2:
The casting process enables three-dimensional structural optimization with varying wall thicknesses and integrated cavities, allowing the front wall to achieve stiffness requirements while creating available space for additional vehicle components
3Ease of manufacture
If shaped sheet metal parts are used for the front wall, then production is established, but flexibility in structural part shape is limited
Solution Approach 1:
The patent transitions from sheet metal forming parameters to casting parameters, enabling complex three-dimensional shapes, varying wall thicknesses, and integrated functional features that cannot be achieved with traditional sheet metal processes
4Volume of moving object
If additional functions are integrated into the front wall module, then installation space utilization improves, but structural complexity increases
Solution Approach 1:
The patent combines multiple functional requirements (structural support, mounting points, reinforcement, acoustic insulation) into a single integrated cast aluminum carrier structure, reducing the number of separate components and assembly steps while improving installation space utilization
Data Source
AI summary
A front wall module for delimiting a front of a passenger cell in a motor vehicle includes a planar carrier structure which forms a front wall portion where a functional shape for receiving a component is formed in the planar carrier structure and where the planar carrier structure is a cast aluminum structural part.