Straddle Vehicle Electrical Component Unit Central Positioning
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Solution Overview
Problem
Conventional straddle vehicle electrical component units are often positioned far from the center of gravity, leading to instability during travel due to heat and vibration influences, and are not easily accessible for maintenance or theft prevention.
Innovation Solution
The electrical component unit is arranged near the center of the vehicle, between the fuel tank and air cleaner box, with a configuration that includes the engine control unit, relay box, and magnetic switch, positioned more frontward than the fuel tank and rearward than the air cleaner box, and housed in a storage box with heat shielding properties to manage temperature and accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If electrical component unit is arranged in front portion and upper portion of straddle vehicle, then electrical components can be arranged in a place having relatively low temperature, but electrical components may be arranged in a position distant from the center of gravity
Solution Approach 1:
The patent transitions from arranging electrical components in the front-upper portion (conventional 2D arrangement) to positioning them in the central lower region between the fuel tank and air cleaner box. This spatial reconfiguration in multiple dimensions brings components closer to the center of gravity while maintaining thermal management, thereby improving vehicle stability without compromising temperature conditions.
Solution Approach 2:
The electrical component unit is nested within the space between the fuel tank and air cleaner box, utilizing the available volume efficiently. This nested arrangement allows components to be positioned centrally near the center of gravity while still being protected from excessive heat and vibration, resolving the contradiction between stability and temperature exposure.
2Stability of the object's composition
If electrical component unit is arranged near the center of gravity, then stability during traveling is improved, but components may be more exposed to heat and vibrations
Solution Approach 1:
The patent applies local quality by selecting a specific micro-environment within the vehicle's central region that has favorable thermal and vibrational characteristics. The space between the fuel tank and air cleaner box provides localized protection from excessive heat and vibration while maintaining proximity to the center of gravity, thus improving stability without exposing components to harmful factors.
Solution Approach 2:
The fuel tank and air cleaner box act as intermediary structures that shield the electrical component unit from heat and vibrations. By positioning components between these two elements, the patent uses them as protective barriers while maintaining central positioning for stability.
3Ease of operation
If electrical component unit is arranged in conventional position, then components are easily accessible for maintenance, but vehicle stability is reduced
Solution Approach 1:
The patent introduces a removable fuel tank design that enables dynamic accessibility to the electrical component unit. When maintenance is needed, the fuel tank can be removed to access the centrally positioned components, and then reinstalled. This dynamic approach resolves the contradiction by providing ease of operation only when needed, while maintaining optimal stability during normal vehicle operation.
Data Source
AI summary
A motorcycle includes a fuel tank, an engine, an air cleaner box, and an electrical component unit. The fuel tank stores a fuel. The engine is driven by the fuel stored in the fuel tank. The air cleaner box purifies air to be supplied to the engine. The electrical component unit includes two or more types of electrical components driven by electricity. The fuel tank and the engine are arranged vertically one above the other. At least part of the air cleaner box is positioned in a space between the fuel tank and the engine. The longitudinal position of at least part of the electrical component unit is more frontward than the rear end of the fuel tank and more rearward than the air cleaner box.