Injector Clip Elastic Support for Fuel Injection Rotation
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Solution Overview
Problem
Fuel injection devices in gasoline direct injection engines face instability and fatigue due to cyclic loading, leading to potential rotation and mechanical performance issues that existing fixing clips fail to adequately address.
Innovation Solution
An injector clip design featuring a lower plate, base plate, and spring arm that elastically supports the fuel injection portion, with the spring arm reinforcing the supporting force and preventing rotation by dispersing the impact of fuel injection, utilizing a configuration where the lower plate and base plate are bent to form a horseshoe-shaped aperture and semi-circular attachment recesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fixing clips are used to secure the fuel injection device, then the device can be held in place, but the clips fail to adequately attenuate cyclic loading and prevent rotation under fuel injection forces
Solution Approach 1:
The engagement support portion is designed as a spring structure that dynamically adapts to cyclic loading from fuel injection. The spring can elastically deform to absorb impact forces while maintaining continuous contact and support, transforming the static fixing approach into a dynamic response system that withstands fatigue without fracture.
Solution Approach 2:
The spring structure changes its mechanical parameters (stiffness, force) in response to loading conditions. Under normal conditions, it provides gentle support; under impact from fuel injection, it increases its supporting force to attenuate the load, thereby preventing fatigue fracture while maintaining stability.
2Stability of the object's composition
If the fuel injection device is securely fixed to prevent rotation, then stability is improved, but the device cannot adequately attenuate the reaction force from fuel injection
Solution Approach 1:
The spring structure provides dynamic support that allows controlled movement and force absorption. It prevents rotation by maintaining engagement while simultaneously absorbing the reaction force from fuel injection through elastic deformation, resolving the contradiction between stability and force attenuation.
Solution Approach 2:
The spring acts as an intermediary element between the fuel injection device and the mounting surface. It mediates the transmission of forces, allowing the device to remain stable while the spring absorbs and attenuates the reaction force, preventing direct transmission of impact loads.
3Stability of the object's composition
If a rigid fixing structure is used to prevent rotation, then stability is improved, but the structure cannot absorb impact and attenuate load from fuel injection
Solution Approach 1:
The spring structure transforms the rigid fixing approach into a dynamic system that can both stabilize the device and absorb impact. The spring's ability to elastically deform allows it to attenuate load from fuel injection while maintaining engagement stability, overcoming the limitations of rigid structures.
Solution Approach 2:
The spring structure is pre-configured to provide cushioning before impact occurs. It is designed with appropriate preload and stiffness characteristics to absorb the expected impact forces from fuel injection, protecting the device from sudden loads while maintaining stable engagement.
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 injector clip effectively reduces the impact of fuel injection, prevents rotation of the fuel injection device, and enhances durability by providing elastic support and a reinforced coupling force, thereby improving mechanical performance and preventing fatigue fractures.
Implementation Method 1
an engagement support portion that elastically supports the lower plate and the base plate to return a the fuel injection portion to an original position when the fuel injection portion is displaced
Implementation Method 2
a lower spring arm formed by extending from the lower plate and being bent in a direction toward the base plate to reinforce supporting force of the engagement support portion
Data Source
AI summary
An injector clip includes a lower plate formed to support a fuel injection portion of an injector, a base plate is formed to engage with and support a connection portion of the injector and an engagement support portion elastically supports the lower plate and the base plate to return the fuel injection portion to an original position after being displaced. A spring arm is formed by extending from the base plate to support a fuel inlet portion of the injector. Accordingly the load resulting from fuel injection of a fuel injector is attenuated and p a fuel injection device is prevented from rotating.