Straddle Vehicle Automatic Engine Start Circuit Control
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Solution Overview
Problem
Straddle type vehicles without a main switch require special operations to start the engine, which is inconvenient for general use, and there is a risk of battery power being supplied unnecessarily when the engine is not in operation.
Innovation Solution
A straddle type vehicle with an engine-start detector and connection controller that automatically connects and disconnects the engine-related electrical components and battery, allowing engine start without a main switch by detecting the engine's start preparation state, such as through crankshaft rotation or electrical power output from a generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a main switch is omitted from the straddle type vehicle, then the device complexity is reduced and weight is decreased, but the ease of operation deteriorates due to requiring special starting procedures
Solution Approach 1:
The system automatically detects engine start conditions through the engine-start detector and autonomously controls battery power supply through the connection controller, eliminating the need for manual main switch operation and special starting procedures while maintaining simplified device structure
2Ease of operation
If battery power is continuously supplied to engine-related electrical components, then the ease of operation is improved, but the loss of energy increases due to unnecessary battery drain when engine is not operating
Solution Approach 1:
The engine-start detector continuously monitors engine operation status and provides feedback signals to the connection controller, which automatically adjusts battery power supply to engine-related electrical components based on actual engine state, preventing energy waste while ensuring power availability when needed
3Reliability
If the main switch is omitted to prevent accidental operation, then the reliability is improved, but the ease of operation deteriorates due to lack of manual control
Solution Approach 1:
The automated detection and control system eliminates manual main switch operation, preventing accidental activation while maintaining operational convenience through automatic response to genuine engine start conditions detected by the engine-start detector
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
Enables the engine to be started without a main switch, ensuring battery power is only supplied when needed, thus preventing unnecessary battery drain and simplifying the starting process.
Implementation Method 1
the engine-start detector is adapted to detect electrical power output from the generator
Implementation Method 2
the vehicle further comprises a generator driven by the engine
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
A straddle type vehicle (1) comprises and engine (6) and an electrical circuit (C1 to C4) including engine-related electrical components (10, 30, 40), such as an ignition coil (10), and a battery (240). The vehicle (1) further includes a connection controller (100) for selectively reconfiguring the electric circuit (C1 to C4) between a connected state in which the engine-related components (10, 30, 40) and the battery (240) are connected and a disconnected state in which the engine-related components (10, 30, 40) and the battery (240) are disconnected. Furthermore, the vehicle (1) includes an engine-start detector (220) for detecting a start preparation state of the engine (6). In use, the connection controller (100) reconfigures the electrical circuit (C1 to C4) from a disconnected state to a connected state according to a detection of the start preparation state by the engine-start detector (220). The straddle type vehicle (1) does not include a main switch and permits the engine (6) of the vehicle (1) to be started without any special operation.