Integrated Canister and Control Valve Assembly for Work Vehicle Fuel Vapor Management
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Solution Overview
Problem
The assembly process of work vehicles is cumbersome due to the separate fitting of the canister, guide pipe, and control valve, which complicates the integration with the vehicle body frame.
Innovation Solution
The canister and control valve are integrally attached to a support member, which is then attached to the vehicle body fixing portion, allowing for a unified unit assembly that simplifies the fitting operation and improves efficiency, with the guide pipe also being pre-connected for streamlined attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the canister, guide pipe, and control valve are separately fitted to the vehicle body, then each component can be individually assembled and maintained, but the assembly process becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines the canister and control valve into a single integrated assembly that is mounted together on the vehicle body. The canister housing and control valve are positioned adjacent to each other and connected through internal passages, allowing both components to be installed as one unit rather than separately fitting multiple components to the vehicle body frame.
Solution Approach 2:
The integrated assembly serves multiple functions simultaneously: the canister stores and condenses fuel vapor, the control valve regulates vapor flow, and the unified structure provides a single mounting interface for the vehicle body. This multi-functional design reduces the number of separate fitting operations required during assembly.
2Adaptability or versatility
If multiple components are separately fitted to the vehicle body, then each component can be independently positioned, but the fitting operations become complex and burdensome
Solution Approach 1:
The canister and control valve are merged into a single integrated assembly with a unified mounting structure. This integration maintains the functional capabilities of both components while reducing assembly complexity by eliminating the need to separately position and secure multiple independent components to the vehicle body frame.
3Productivity
If the canister and control valve are integrally attached to the support member, then the fitting operation is simplified and efficiency is improved, but the integration of multiple functions into one structure increases manufacturing complexity
Solution Approach 1:
The canister and control valve are integrated into a single assembly unit that is mounted together on the vehicle body. This integration simplifies the fitting operation by reducing the number of separate assembly steps, while the internal design maintains functional independence of both components through carefully designed internal passages and mounting structures.
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 simplifies the assembly process by allowing the canister, control valve, and support member to be fitted as a unit, reducing the complexity and time required for installation while ensuring efficient fuel vapor management and discharge regardless of the fuel tank's inclination.
Implementation Method 1
a canister (37) to prevent evaporated fuel from being discharged to the outside from a fuel tank (35)
Data Source
AI summary
A fuel tank, an engine to which fuel is supplied from the fuel tank through a suction path, a canister for absorbing fuel vapor from the fuel tank, a guide pipe for supplying fuel vapor to the suction path, and a control valve for controlling a flowing state of fuel vapor in the guide pipe are provided. The canister and the control valve are integrally attached to the support member, and the support member is supported by a vehicle body fixing portion.