Fuel Pump Suction Filter Holder Design
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Solution Overview
Problem
In fuel feed apparatuses without a sub-tank, the suction filter is prone to vibration and potential ablation against the fuel tank's inner surface due to lack of restriction, leading to inefficiencies and potential damage.
Innovation Solution
A fuel feed apparatus design that includes a holder engaging with the lateral portion of the suction filter, restricting its movement and preventing vibration against the fuel tank, thereby preventing ablation. The holder is biased by a spring to ensure consistent contact and reduce vibration transmission from the fuel pump.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the suction filter is provided to the bottom portion of the fuel tank without a sub-tank, then the structure is simplified, but the suction filter may cause ablation relative to the inner bottom surface of the fuel tank due to vibration
Solution Approach 1:
A holder is introduced as an intermediary component between the suction filter and the fuel tank. The holder engages with the lateral portion of the suction filter and restricts its movement, preventing direct contact and ablation against the fuel tank bottom surface while maintaining the simplified structure without sub-tank
2Object-affected harmful factors
If the suction filter is restricted from moving by the sidewall of the sub-tank, then ablation is prevented, but the device complexity increases due to the sub-tank structure
Solution Approach 1:
The holder serves as a simplified intermediary component that performs the restriction function without requiring a sub-tank structure. It engages with the lateral portion of the suction filter and prevents movement that would cause ablation, achieving the same protective effect with reduced structural complexity
3Object-affected harmful factors
If the holder engages with the lateral portion of the suction filter, then the suction filter is restricted from causing ablation, but the device complexity increases slightly
Solution Approach 1:
The holder is a simple intermediary component that engages with the lateral portion of the suction filter to restrict its movement. This minimal addition prevents ablation without significantly increasing device complexity, as the holder is a straightforward mechanical element rather than a complex structure
Solution Approach 2:
The holder is designed as a separate, modular component that can be independently manufactured and assembled. This segmentation allows for easy production and maintenance while providing the necessary restriction function with minimal impact on overall device complexity
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 effectively restricts the suction filter from causing ablation against the fuel tank, enhancing the apparatus's stability and preventing damage, while also absorbing vibrations to improve operational efficiency.
Implementation Method 1
The holder is biased by a spring to ensure consistent contact and reduce vibration transmission from the fuel pump
Data Source
AI summary
A fuel feed apparatus supplies fuel in a fuel tank to an outside of the fuel tank. The fuel feed apparatus includes a fuel pump that is accommodated in the fuel tank. The fuel pump pumps fuel in the fuel tank. The suction filter connects with an inlet of the fuel pump. The suction filter is arranged in a bottom portion of the fuel tank. The suction filter removes foreign matters contained in fuel drawn into the fuel pump. The holder engages with a lateral portion of the suction filter. The holder restricts the suction lifter from moving in a lateral direction of the suction filter.