Fuel Distributor With Thin-Walled Insert Element
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fuel distribution rails for internal combustion engines have complex manufacturing processes and are limited to radial fuel inflow, restricting their application range and efficiency.
Innovation Solution
A redesigned fuel distributor with a thin-walled insert element subdivides the interior into an inflow and damping area, allowing for direct water injection and improved damping of pressure pulsations, featuring a tubular base body for axial or radial connections and cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thick-walled tube with grooves is used as an insert element, then damping capacity is improved, but manufacturing complexity increases
Solution Approach 1:
The insert element is segmented into a thin-walled tubular structure with axial grooves rather than a solid thick-walled tube, reducing manufacturing complexity while maintaining damping functionality through the groove geometry
Solution Approach 2:
The wall thickness parameter is changed from thick-walled to thin-walled, and the damping mechanism is shifted from material-based (thick walls) to geometry-based (axial grooves), simplifying manufacturing while preserving damping capacity
2Reliability
If a large hydraulic volume is used in the fuel distributor, then damping of pressure pulsations is improved, but the delay period between water addition and injection increases
Solution Approach 1:
The hydraulic volume is segmented into distinct functional zones (inflow area and damping area) separated by the insert element, allowing independent optimization of each zone's volume and function
Solution Approach 2:
Different regions of the fuel distributor are assigned different qualities: the inflow area has small volume for rapid response, while the damping area has larger volume for pressure pulsation damping, achieved through the insert element's strategic placement and groove geometry
3Device complexity
If a radial fuel inflow configuration is used, then the design is simple, but the range of applications is limited
Solution Approach 1:
The base body is designed as a tubular structure that can accommodate both radial and axial connections, making the fuel distributor universally applicable to different engine configurations and injection system layouts
Solution Approach 2:
The connection configuration is extended from purely radial to include axial dimensions, allowing the fuel distributor to adapt to various mounting orientations and system architectures without redesign
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
This design reduces manufacturing costs, enhances damping behavior, and enables flexible water injection control, improving fuel distribution efficiency and adaptability to different engine conditions.
Implementation Method 1
at least one high-pressure outlet (24, 25, 26) for fuel injectors (9, 10, 11), in particular for direct injection fuel injectors. The interior (23) of the fuel distributor (2) is divided into an inflow area (28) and a damping area (29)
Data Source
AI summary
A fuel distributor, which is in particular used as a fuel distribution rail for mixture-compressing, spark-ignited internal combustion engines, including a base body, at which at least one high-pressure inlet and multiple high-pressure outlets are provided. An insert element is furthermore provided that is situated in an interior of the base body. In the interior, the insert element separates an inflow area, which extends from the high-pressure inlet to the high-pressure outlets, at least essentially from a damping area. The insert element is designed as a thin-walled insert element that forms a divider extending through the interior at least from the high-pressure inlet to the high-pressure outlets.