Fuel Pressure Controller Ball Insertion Groove Design
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Solution Overview
Problem
Existing fuel pressure controllers in automobiles face issues with open-close ball separation during assembly, leading to noise and poor control performance due to lack of accurate seat surfaces and complex assembly processes, resulting in high costs and material usage.
Innovation Solution
A fuel pressure controller design featuring a valve pressing member with open-close ball insertion grooves and uniformly spaced opening parts in the circumferential and radial directions, ensuring linear movement of the open-close balls and reducing noise, while integrating components to simplify assembly and lower costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional valve pressing member without insertion grooves is used, then the structure is simpler, but the open-close ball separates during assembly and operation causing noise and poor control
Solution Approach 1:
The insertion groove acts as an intermediary structure between the open-close ball and the valve pressing member. It provides a dedicated seating surface that mediates the connection, preventing ball separation while maintaining structural simplicity. The groove geometry (width matching ball diameter, depth of 0.5-2mm) ensures reliable positioning without requiring complex assembly procedures.
2Manufacturing precision
If opening parts of varying widths are used in the valve pressing member, then the structure is simpler, but the open-close ball movement is nonlinear and control performance deteriorates
Solution Approach 1:
The valve pressing member features opening parts with uniform width specifically designed to match the open-close ball diameter. This local quality enhancement at critical interfaces ensures linear ball movement and precise pressure control, while other areas of the component can maintain simpler geometries for ease of manufacture.
3Device complexity
If multiple separate components are used in the fuel pressure controller, then assembly flexibility is higher, but the number of components increases leading to higher costs and complex assembly
Solution Approach 1:
The invention integrates the open-close ball, insertion groove, and valve pressing member into a more unified structure. The insertion groove is formed directly in the valve pressing member, eliminating the need for separate ball retention components. This merging reduces the total component count while simplifying the assembly process through fewer parts and interfaces.
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
The solution prevents open-close ball separation, enhances pressure control accuracy, reduces noise, and simplifies the assembly process, thereby lowering production costs and improving the overall performance of the fuel pressure controller.
Implementation Method 1
displacement by which an open-close ball moves linearly according to applied pressure of fuel
Implementation Method 2
a spring 50, and the like
Data Source
AI summary
A fuel pressure controller used in a fuel supply device of an automobile has an open-close ball insertion groove formed to be protruding from a side of a valve pressing member. The valve pressing member has a predetermined open area in a circumferential direction and in a radial direction to prevent separation of an open-close ball even at the time of an operation, such that pressure may be accurately controlled and noise may be reduced.