Alternative Fuel Module Support for Frame Torsion Control
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Solution Overview
Problem
Alternative fuel heavy vehicles face issues with vehicle stability and maneuverability due to the rigidity variation of the frame caused by the fixing of heavy and delicate powertrain components like batteries or fuel cell devices, which can be damaged by torsional moments and longitudinal accelerations.
Innovation Solution
A support system comprising first and second support elements connected to the frame and alternative fuel module via coupling portions, with the second support element connected to the side members via an elastic connection and the first support element connected to the cross member via a movable connection, such as a ball joint, to absorb forces and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the alternative fuel module is fixedly connected to the frame, then the module is securely supported, but the frame rigidity varies causing vehicle stability and maneuverability issues
Solution Approach 1:
The support system transitions from a static fixed connection to a dynamic semi-rigid connection that allows controlled movement. The semi-rigid coupling portions enable the alternative fuel module to move relative to the frame in response to torsional moments and longitudinal accelerations, thereby maintaining vehicle stability while still providing secure support.
Solution Approach 2:
The connection rigidity parameter is changed from fully rigid to semi-rigid. This parameter modification allows the support system to adapt its stiffness characteristics, providing firm support under normal conditions while accommodating frame deformations during dynamic events, thus resolving the contradiction between secure support and vehicle stability.
2Reliability
If the alternative fuel module is fixedly connected to the frame, then the module is securely supported, but torsional moments and longitudinal accelerations may damage the module
Solution Approach 1:
The semi-rigid coupling portions are designed in advance to absorb and mitigate the impact of torsional moments and longitudinal accelerations. By incorporating controlled flexibility into the connection, the system provides beforehand cushioning that protects the alternative fuel module from damage while maintaining secure support under normal operating conditions.
Solution Approach 2:
The support system employs dynamic semi-rigid connections that allow the alternative fuel module to move relative to the frame during dynamic events. This dynamic capability enables the system to accommodate torsional moments and longitudinal accelerations without transmitting excessive forces to the module, thereby preventing damage while maintaining reliable support.
3Stability of the object's composition
If fully rigid connections are used, then structural stability is improved, but adaptability to different vehicle dimensions and configurations is reduced
Solution Approach 1:
The semi-rigid coupling portions are designed as universal connection elements that can accommodate various vehicle dimensions and configurations. These multi-functional coupling portions provide both structural support and controlled flexibility, enabling the same support system design to be adapted across different vehicle platforms while maintaining structural stability.
Solution Approach 2:
The semi-rigid connection allows for parameter adjustments in connection stiffness and movement range, enabling the support system to be adapted to different vehicle dimensions and configurations. This parameter flexibility maintains structural stability while providing the versatility needed for different application scenarios.
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 support system effectively absorbs torque and acceleration, preventing damage to the alternative fuel module while allowing for movement and rotation, providing a cost-effective and versatile solution for different vehicle dimensions.
Implementation Method 1
The coupling portion of the second support element is connected via an elastic connection to the two side members
Implementation Method 2
The coupling portion of the first support element is connected to the cross member by a movable connection, and the movable connection comprises a ball joint
Data Source
AI summary
A vehicle provided with a frame (1) comprising two side members (2, 3) connected together at least by a cross member (4), an alternative fuel module (6) and a support system (5) connected to the frame (1) for supporting the alternative fuel module (6), the support system (5) comprising at least a first support element (7) and a second support element (8), both being configured to be fixedly connected to the alternative fuel module (6) via coupling portion (11, 9b′), the coupling portion (9b′) of the second support element (8) being connected to both the side members (2, 3) and the coupling portion (11) of the first support element (7) being connected to the cross member (4) via a movable connection.