Fuel Filter Separation in Fuel Delivery Module
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Solution Overview
Problem
Larger fuel filters in fuel tanks restrict packaging space and can interfere with fuel level sensors, particularly in tanks with varied bottom surfaces, limiting their operational range.
Innovation Solution
A fuel delivery module with a fuel filter housed separately from the surge chamber, connected via corrugated pipe conduits and L-shaped connecting rods, allowing for larger filter volumes without compromising space for other components like fuel level sensors, and enabling installation in shallow containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If larger fuel filters are used in the fuel tank, then fuel filtration effectiveness is improved, but packaging space for other components is reduced
Solution Approach 1:
The fuel delivery system is divided into separate functional modules: the surge chamber and the fuel filter are positioned as distinct components rather than integrated within the same space. This segmentation allows each component to be optimized independently, enabling larger filter capacity without encroaching on the surge chamber volume.
Solution Approach 2:
The fuel filter is positioned outside the surge chamber in a different spatial arrangement, utilizing available space in the fuel tank that would otherwise be unused. This dimensional reorganization allows both the surge chamber and fuel filter to coexist with adequate volumes for their respective functions.
2Reliability
If larger fuel filters are installed in the fuel tank, then fuel filtration capacity is improved, but fuel level sensor operating range is limited
Solution Approach 1:
The fuel filter is extracted from the surge chamber and positioned separately, removing the spatial conflict between the filter and fuel level sensor. This allows the fuel level sensor to operate through the full range of the surge chamber without obstruction from the filter, while the filter maintains its filtration capacity.
3Volume of moving object
If fuel filters are positioned within the surge chamber, then space utilization is improved, but filter protection from sloshing movements is reduced
Solution Approach 1:
The fuel filter is positioned outside the surge chamber, using the surge chamber as an intermediary component for fuel delivery rather than housing the filter within it. This spatial separation protects the filter from direct exposure to sloshing movements while maintaining efficient fuel delivery through the surge chamber.
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
Enables the use of larger fuel filters without restricting packaging space, allowing for effective fuel delivery and accurate fuel level sensing even in containers with limited height, while minimizing volume loss and protecting the filter from sloshing movements.
Implementation Method 1
a fuel pump for conveying the fuel from the surge chamber to a fuel consumer
Implementation Method 2
a fuel filter through which the fuel flows
Data Source
AI summary
A vehicle fuel delivery apparatus, having: a surge chamber configured to store fuel; a fuel filter distally positioned with respect to and connected to the chamber; and a fuel level sender positioned between the filter and surge chamber.