Purge Valve Integrated Intake Pipe Assembly for Straddle Vehicles
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Solution Overview
Problem
The assembly of fuel vapor processing devices in straddle-type vehicles is inefficient due to the need to connect hoses in narrow spaces, leading to potential hose crushing and reduced functionality.
Innovation Solution
A fuel vapor processing device configuration where the purge valve is attached to the intake system component, allowing for sub-assembly of the intake system component, purge valve, and second hose before assembly to the engine, thereby avoiding the need for connections in narrow spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the canister and purge valve are separately attached to the vehicle frame and connected via hoses, then the fuel vapor processing functionality is achieved, but the assembly work efficiency is reduced and hose crushing risk increases due to narrow connection space
Solution Approach 1:
The patent merges the purge valve with the intake system component by integrating the purge valve into the intake pipe structure. This combination eliminates the need for separate hose connections between the purge valve and intake system, thereby simplifying assembly work and avoiding hose crushing issues in narrow spaces while maintaining the fuel vapor processing functionality
2Reliability
If hoses are connected in narrow spaces during assembly, then the fuel vapor processing device can be assembled, but assembly errors such as hose crushing occur and functionality is compromised
Solution Approach 1:
By integrating the purge valve into the intake pipe structure, the patent eliminates separate hose connections in narrow spaces, thereby preventing hose crushing and assembly errors while maintaining reliable fuel vapor processing functionality
Solution Approach 2:
The patent performs preliminary integration of the purge valve with the intake system component during the manufacturing stage, so that the combined unit can be installed as a single assembly without requiring delicate hose connections in narrow spaces during vehicle assembly, thereby preventing assembly errors
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 improves the ease of assembly of the second hose between the purge valve and the intake system component, reduces assembly errors such as crushing, and enhances overall functionality.
Implementation Method 1
a canister configured to adsorb fuel vapor generated in the fuel tank
Data Source
AI summary
A fuel vapor processing device for a straddle-type vehicle equipped with an engine and a fuel tank. The fuel vapor processing device includes: a canister configured to adsorb fuel vapor generated in the fuel tank; an intake system component configured to form a part of an intake passage of the engine; a purge valve configured to release the fuel vapor toward the intake passage; a first hose configured to connect the canister and the purge valve; and a second hose configured to connect the purge valve and the intake system component. The purge valve is attached to the intake system component.