Injector Assembly Fuel Joint Angle Adjustment
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Solution Overview
Problem
Conventional injector assemblies have a fixed fuel joint configuration that limits their adaptability to vehicles with different specifications, making it difficult to use the same assembly across various vehicles due to a fixed drawing angle of the fuel hose.
Innovation Solution
The injector assembly includes a separate joint pressing member that restricts the displacement of the fuel joint, allowing the projecting direction of the connecting pipe portion to be changed by adjusting the relative angle of the fuel joint with respect to the joint pressing member, along with an assembling angle positioning mechanism for flexible positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the connecting pipe portion and the boss portion are integrally formed with the fuel joint, then the structure is simplified, but the position of the boss portion and the projecting direction of the connecting pipe portion are fixed, making it difficult to adapt to vehicles with different specifications
Solution Approach 1:
The fuel joint is divided into separate components: the connecting pipe portion and the boss portion are no longer integrally formed but are positioned relative to each other through the positioning protrusion and positioning groove mechanism. This segmentation allows independent adjustment of each component's orientation, enabling adaptation to different vehicle specifications while maintaining structural simplicity.
2Stability of the object's composition
If the fuel joint is fixed in position relative to the mounting member, then the connection is stable, but the drawing angle of the fuel hose is univocally decided, limiting versatility
Solution Approach 1:
The fuel joint's orientation becomes adjustable rather than fixed. The positioning protrusion can engage with different positioning grooves on the joint pressing member, allowing the fuel joint to be positioned at different angles. This dynamic positioning capability enables the same injector assembly to accommodate different fuel hose drawing angles while maintaining stable connection through the engagement mechanism.
3Volume of moving object
If the fuel joint projects significantly in the direction away from the injector, then the connecting pipe portion has sufficient space, but the fuel joint size increases
Solution Approach 1:
Instead of increasing the projection length of the connecting pipe portion in one dimension to provide sufficient space, the design uses the radial dimension by providing multiple positioning grooves at different angular positions. This allows the connecting pipe portion to be oriented in different directions without increasing overall fuel joint size, effectively utilizing spatial arrangement in multiple dimensions.
Data Source
AI summary
A distal end portion of an injector is fitted into a mounting member. A fuel joint having a connecting pipe portion is connected to a proximal portion of the injector. A joint pressing member which restricts the displacement of the fuel joint in the direction away from the mounting member is fixed by fastening to the mounting member. The injector is fixed to the mounting member by restricting the displacement of the fuel joint by the joint pressing member.