Motorcycle Canister Placement Within Frame Triangular Region
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing configuration of a motorcycle's canister, which stores evaporated fuel, is difficult to protect and efficiently place due to its location outside the bridge frame and limited space, making it vulnerable to external forces and requiring inefficient tube arrangements.
Innovation Solution
The canister is positioned close to the fuel tank, surrounded by the vehicle body frame parts, with inlet and drain tubes routed to avoid frame components, allowing for efficient placement and protection while maintaining air-cooling efficiency and preventing tube bending or interference with the engine's air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the canister is mounted on a stay attached to the bridge frame (external location), then the canister can be installed, but it becomes difficult to protect the canister from external forces and inefficient space utilization occurs
Solution Approach 1:
The canister is nested within the triangular region formed by the vehicle body frame components (one of the pair of right and left main frame parts, the down frame part, and the bridge frame part). This nesting arrangement allows the canister to be protected by the frame structure while efficiently utilizing the limited space within the motorcycle's component arrangement area.
2Ease of manufacture
If the canister is disposed outward of the bridge frame, then installation is possible, but the inlet tube length increases and space utilization decreases
Solution Approach 1:
The canister is positioned in a three-dimensional space defined by the triangular region formed by the frame parts, utilizing the vertical and lateral dimensions created by the frame structure. This spatial arrangement shortens the inlet tube length by placing the canister closer to the fuel tank while maintaining ease of installation through the structured framework.
3Volume of moving object
If space for component arrangement is limited, then compact design is achieved, but efficient placement of the canister becomes difficult
Solution Approach 1:
The invention identifies and utilizes a specific local space - the triangular region formed by the intersection of the main frame part, down frame part, and bridge frame part - for canister placement. This localized space utilization allows efficient component placement within the limited overall volume of the motorcycle frame structure.
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 configuration effectively protects the canister, optimizes component placement, maintains air-cooling efficiency, and prevents tube damage or interference with the engine's air flow, enhancing the motorcycle's design and functionality.
Implementation Method 1
the air flowing from the front directly contacts the canister. Even in a case where the temperature of the canister is increased by the heat radiated from the engine, the canister can be naturally cooled by the air
Data Source
AI summary
A motorcycle comprises a vehicle body frame including a head pipe part, a pair of right and left main frame parts extending rearward from the head pipe part while being inclined in a downward direction, a down frame part extending downward from the head pipe part to a location that is below the main frame parts, and a bridge frame part coupling the main frame parts to the down frame part; a fuel tank supported by the main frame parts; and a canister connected to the fuel tank via an inlet tube and configured to store therein evaporated fuel generated in the fuel tank. The canister is disposed on a first side in a vehicle width direction. In a side view, the canister is disposed in a region surrounded by the main frame part, the down frame part, and the bridge frame part.