Motorcycle Heat Shield Segmentation for Shape Freedom
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Solution Overview
Problem
Existing body cover systems for small vehicles restrict the degree of freedom in shape due to the need to cover exhaust systems, compromising the vehicle's appearance and shape flexibility.
Innovation Solution
A body cover system where a metal heat shield, mounted to the exhaust system via heat-tolerant and vibration-damping elastic members, is designed to be visually continuous with the body cover, allowing for enhanced shape flexibility and appearance quality without needing to extend into the vehicle's frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heat shield extends to the inside of the vehicle to reach the body frame for mounting, then the mounting stability is improved, but the degree of freedom in shape of the heat shield is restricted
Solution Approach 1:
The heat shield is divided into a first heat shield and a second heat shield that are separately mounted on the exhaust system. This segmentation allows each heat shield portion to be independently shaped and positioned, providing mounting stability through separate attachment points while maintaining design freedom for each segment's geometry and orientation.
Solution Approach 2:
Elastic members are introduced as intermediary elements between the heat shields and the exhaust system. These elastic members serve as flexible connectors that accommodate shape variations and positioning adjustments, enabling the heat shields to achieve stable mounting without being constrained by rigid attachment requirements to the body frame.
2Shape
If the body cover and heat shield are designed to cooperate and define an exterior surface, then the vehicle appearance quality is improved, but the degree of freedom in shape of both components is restricted due to shape alignment requirements
Solution Approach 1:
The heat shielding function is segmented into multiple heat shield portions that can be independently designed and positioned. This allows each portion to be optimized for its specific location and function while collectively achieving the desired exterior appearance, without requiring rigid shape alignment constraints across the entire assembly.
Solution Approach 2:
The elastic members provide dynamic adjustment capability, allowing the heat shields to be positioned and oriented to achieve visual continuity with the body cover while accommodating variations in exhaust system geometry. This dynamic positioning capability maintains appearance quality without imposing fixed shape alignment requirements.
3Strength
If the heat shield is mounted to the body frame, then the structural support is improved, but the exhaust system vibration is transmitted to the heat shield and body cover
Solution Approach 1:
Elastic members are used as intermediary mounting elements between the heat shields and the exhaust system. These elastic members act as vibration isolators, absorbing and dampening exhaust system vibrations while still providing adequate structural support for the heat shields. This prevents vibration transmission to the body cover and surrounding components.
Solution Approach 2:
The elastic members convert the potentially harmful vibration transmission into a beneficial vibration damping function. By allowing controlled flexibility and energy absorption at the mounting points, the system transforms the rigid connection that would transmit vibrations into a compliant connection that isolates and dissipates vibrational energy.
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 solution enhances the shape freedom of both the body cover and heat shields, ensuring a high-quality vehicle appearance while minimizing vibration transmission and resonance, and reduces the number of components needed by integrating the catalytic converter and sensor coverage.
Implementation Method 1
mounted to the exhaust system via a plurality of heat tolerant, vibration damping elastic members
Data Source
AI summary
A motorcycle is provided with vehicle frame, an internal combustion engine operatively attached to the vehicle frame, and an exhaust system for routing exhaust gas from the engine therethrough. The motorcycle also includes a body cover that covers at least a lateral side portion of the engine and constitutes an outer face of the vehicle, and a heat shield having a face closely adjacent and visually continuous to the body cover, the heat shield covering a lateral side portion of the exhaust system. The heat shield and the body cover cooperate to configure the external face of the vehicle, and the heat shield is mounted to the exhaust system. The body cover is formed of a plastic material, and the heat shield is made of metal. The body cover and heat shield cooperate to provide an improved vehicle appearance.