Motorcycle Muffler Protector with Vertical Stay and Venting
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Solution Overview
Problem
The existing muffler systems with protectors for small-sized vehicles, such as motorcycles, face issues with excessive bulging, which affects the external appearance, and inadequate temperature management, as hot air from the muffler directly reaches the protector, leading to increased temperature and potential heat insulation inefficiencies.
Innovation Solution
A muffler system with a dual-structure protector and plate-shaped stays that incline upward from front to back, featuring heat-resistant materials and strategically placed wind guiding ports to actively discharge heat and reduce the bulge, enhancing heat insulation and external appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the muffler protector is formed in a dual structure to lower the temperature of the surface, then the heat insulation effect is improved, but the muffler protector bulges out excessively around the muffler, spoiling the appearance
Solution Approach 1:
The patent introduces a protector stay that extends in the vertical dimension (upward from the muffler surface) to provide structural support and reduce bulging. This vertical dimension allows the muffler protector to be positioned closer to the muffler body without excessive outward bulge, while the dual structure maintains thermal insulation performance.
2Shape
If the muffler protector is positioned close to the muffler to reduce bulge, then the external appearance is improved, but hot air from the muffler directly reaches the protector, increasing its temperature
Solution Approach 1:
The patent segments the protective structure into multiple components: the muffler body, the dual-structure muffler protector (with outer and inner layers), and the protector stay. This segmentation creates thermal management zones where the outer protector layer faces hot air flow while the inner layer provides insulation, allowing close positioning without excessive temperature increase.
Solution Approach 2:
The muffler protector is constructed as a composite structure with an outer layer and an inner layer having different material properties. The outer layer is designed to withstand direct hot air exposure, while the inner layer provides thermal insulation, enabling the protector to be positioned close to the muffler without excessive temperature increase.
3Temperature
If the muffler protector is made larger to cover more of the muffler surface, then the heat insulation effect is improved, but the outward bulge increases, spoiling the appearance
Solution Approach 1:
The protector stay extends vertically upward from the muffler surface, providing structural support that allows the muffler protector to cover more surface area without proportionally increasing the outward bulge. This vertical dimension enables better heat insulation coverage while maintaining a sleek external appearance.
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 system effectively manages heat dissipation, reduces the muffler protector's temperature, and minimizes its outward bulge, improving both functionality and aesthetics while optimizing material usage and assembly ease.
Implementation Method 1
hot air between the muffler and the muffler protector, which are arranged in such a manner as to be inclined upward from front to back, is actively discharged to the rear of a vehicle through heat convection
Implementation Method 2
the muffler protector's intrinsic function of heat insulation is enhanced accordingly
Data Source
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AI summary
Object With regard to a muffler system with a protector for a motorcycle in which the upper surface of a muffler placed inclining upward from front to back in the vicinity of a seat for a rider is covered with a muffler protector, it is intended that diffusion of hot air toward a lateral side of the seat should be prevented by curbing a rise in the temperature of the muffler protector, that the muffler system with a protector should be constructed in a smaller size, and that the external appearance should be enhanced. Solving Means A muffler (M) placed near a seat for a rider, which is inclined upward from front to back in line with a front-rear direction of a vehicle body, is provided with a plate-shaped protector stay (PS1) for covering an outer surface of the muffler (M). Front and rear openings (35), (36) are formed between the outer surface of the muffler (M) and front and rear portions of the protector stay (PS1), and the protector stay (PS1) is provided with a muffler protector (MP) for covering the upper surface of the muffler (M).