Motorcycle Canister Nesting in Fuel Tank Cavity
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Solution Overview
Problem
Existing motorcycle designs often expose the canister to foreign matter, such as dust and dirt, due to its exposed placement, which can lead to contamination and reduced performance.
Innovation Solution
The canister is positioned between the inclined surface of the fuel tank and the seat front portion, with a cavity formed in the seat lower surface to house the canister, minimizing exposure to external debris and maintaining the fuel tank's capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the canister is placed in an exposed manner at a side surface of the vehicle body, then the canister is easily accessible for maintenance, but the canister is more likely to catch foreign matter such as dust and dirt
Solution Approach 1:
The canister is nested within a cavity formed in the vehicle body structure, specifically positioned between the fuel tank and the seat. The seat lower surface forms a cover that encloses the canister, creating a nested configuration where the canister is housed within the vehicle body's internal space rather than being exposed on the exterior surface.
2Object-affected harmful factors
If the canister is positioned between the fuel tank and seat, then the canister is shielded from foreign matter, but the fuel tank capacity may be reduced
Solution Approach 1:
The vehicle body structure utilizes three-dimensional space optimization by forming a cavity in the seat lower surface and positioning the canister within this cavity. The fuel tank is configured to extend into this cavity space, effectively using the vertical and lateral dimensions of the vehicle body to accommodate both the canister and fuel tank without simple linear placement, thereby maximizing fuel tank capacity while maintaining canister protection.
Data Source
AI summary
A motorcycle can include an engine, a fuel tank, a seat, and a canister. The fuel tank can have an upper surface and an inclined surface arranged to extend obliquely downward from a rear end of the upper surface toward a back of the motorcycle. The seat can include a seat front portion and a seat rear portion. The seat front portion can be provided on the inclined surface, and the seat rear portion can extend toward the back of the motorcycle. The canister can be arranged between the inclined surface and the seat front portion. The canister can store fuel gas generated in the fuel tank, and supply the fuel gas to the engine. At least one of the inclined surface and the lower surface can have a first cavity that stores the canister.