High Pressure Fuel Pump Fluid Collector Block Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing high pressure fuel pump assemblies for internal combustion piston engines face challenges in preventing the mixing of fuel and lubrication medium, leading to inefficiencies and potential leakage, which are not adequately addressed by prior art solutions.
Innovation Solution
A high pressure fuel pump assembly with a fluid collector block containing separate conduits for lubricant, leak fuel, and fuel mist, arranged to facilitate a continuous sloping flow passage and sealed fluid communication, effectively collecting and draining these fluids using gravity, thereby preventing mixing and enhancing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate collection systems for lubricant and fuel are implemented, then mixing prevention is improved, but device complexity increases
Solution Approach 1:
The invention divides the collection system into three separate collector conduits: a first collector conduit for lubricant, a second collector conduit for leak fuel, and a third collector conduit for fuel mist. This segmentation prevents mixing of different fluids while providing dedicated collection paths for each substance, directly resolving the contradiction between mixing prevention and system complexity.
Solution Approach 2:
The fluid collector block serves multiple functions simultaneously: it collects lubricant from both the drive shaft lubrication system and pump unit lubrication system, collects leak fuel from piston pump units, and collects fuel mist from piston pump units. This multi-functionality consolidates what would otherwise require multiple separate components into a single integrated block, reducing overall device complexity while maintaining reliable separation.
2Productivity
If multiple collector conduits are integrated in a fluid collector block, then fluid communication efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The invention merges three separate collection functions into a single fluid collector block that houses all three collector conduits (first for lubricant, second for leak fuel, third for fuel mist). This consolidation improves fluid communication efficiency by providing integrated collection points close to the pump units, while the block can be manufactured as a single piece or pre-assembled unit, managing manufacturing complexity through modular design.
3Productivity
If sloping flow passages are arranged for continuous drainage, then fluid drainage efficiency is improved, but pump unit design complexity increases
Solution Approach 1:
The invention arranges the first, second, and third collector conduits at horizontally lower positions relative to the pump units, creating continuous sloping flow passages that allow fluids to drain by gravity alone. This equipotential arrangement eliminates the need for additional pumping or pressurization systems for drainage, improving drainage efficiency while keeping the structural complexity manageable through straightforward geometric design.
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 improves the performance of high pressure fuel pump assemblies by ensuring efficient collection and drainage of lubricant and fuel, preventing undesired mixing and enhancing the overall efficiency of the fuel injection system, particularly in common rail fuel systems.
Implementation Method 1
arranged to facilitate a continuous sloping flow passage and sealed fluid communication, effectively collecting and draining these fluids using gravity
Data Source
Figure 1
Figure 2
AI summary
Invention relates to a high pressure fuel pump assembly (100) comprising a number of piston pump units (10) driven by a drive shaft (110) of the pump assembly (100), a drive shaft lubrication system (114) and pump unit lubrication system (116), and at least one inlet (115) for pressurized lubricant, where the pump assembly (100) is provided with a first collector conduit (120) configured to receive lubricant from the pump unit lubrication system (116) and a second collector conduit (122) configured to receive leak fuel from the piston pump units, and a third collector conduit configured to receive fuel mist from the piston pump units.