Compact Pulsation Damper Support Structure for Fuel Pump Downsizing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Downsizing fuel pumps to reduce weight and size in vehicles poses a challenge for pulsation dampers, as reducing the fuel chamber size leads to insufficient elastic force due to shortened claw parts.
Innovation Solution
A pulsation damper design featuring a support member with an annular holding part, a base part, elastically deformable beam parts, and claw parts that extend outward from the base between adjacent beam parts, allowing for a compact size while maintaining sufficient elastic force through adjustable beam and claw configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the fuel chamber is downsized to reduce the size of the fuel pump, then the size of the pulsation damper is reduced, but the length of the claw parts is shortened resulting in insufficient elastic force
Solution Approach 1:
The support member is divided into multiple functional segments: holding part for securing the diaphragm damper, beam parts for providing elastic support, and claw parts for engaging with the case. This segmentation allows each part to be optimized independently, enabling the claw parts to maintain sufficient length and elastic force even when the overall damper size is reduced.
Solution Approach 2:
The support member utilizes three-dimensional spatial arrangement by extending beam parts radially outward from the holding part and positioning claw parts at the distal ends of these beam parts. This dimensional configuration maximizes the use of available space within the compact fuel chamber while maintaining the necessary claw part length for adequate elastic force.
2Volume of moving object
If the diameter of the support member is reduced to accommodate downsizing, then the size of the pulsation damper is reduced, but the length of the claw parts must be shortened resulting in insufficient elastic force
Solution Approach 1:
The support member is designed with inherent elasticity through the beam parts that can dynamically deform under load. The claw parts are configured to flexibly engage with the case, allowing the support member to adapt its shape and distribute forces effectively within the compact structure, ensuring reliable supporting force despite reduced dimensions.
Solution Approach 2:
The support member is formed from elastic material that combines structural integrity with flexibility. This composite approach allows the creation of a compact support structure that maintains sufficient elastic force through the material's inherent properties, enabling reliable diaphragm damper support within a reduced-size configuration.
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 design achieves a small-sized pulsation damper with appropriate supporting force for the diaphragm damper, ensuring effective pulsation reduction in fuel pumps while accommodating size reduction demands.
Implementation Method 1
a plurality of elastically deformable beam parts that are defined by a plurality of opening portions formed in an annularly aligned manner around the base part between the holding part and the base part
Implementation Method 2
a plurality of claw parts that abut on the case in an elastically deformable manner, each of the plurality of claw parts provided to extend outward from the base part between two adjacent beam parts
Data Source
AI summary
A pulsation damper is small in size and can achieve an appropriate supporting force for a diaphragm damper. A pulsation damper accommodated in a case includes a diaphragm damper having a gas sealed therein, and a first support member and a second support member that are disposed between the case and the diaphragm damper and that hold the diaphragm damper.