High-Pressure Pump Low-Pressure Fluid Diversion
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Solution Overview
Problem
Existing systems require costly auxiliary fluid supply systems for secondary uses in mechanical devices with high-pressure fluid pumps, as low-pressure fluid is often inaccessible and diverting fuel from high-pressure pumps reduces flow rate and pressure below specified ranges.
Innovation Solution
An apparatus and method that divert low-pressure fluid from a high-pressure fluid pump using a primary coupler and diverter fluid passage, allowing communication of low-pressure fluid to an auxiliary delivery system, reducing the need for a dedicated low-pressure supply system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If low-pressure fluid is diverted from the high-pressure fluid pump for auxiliary use, then the auxiliary fluid delivery system can be supplied without a dedicated low-pressure supply system, but the flow rate and fluid pressure may be reduced below specified ranges
Solution Approach 1:
The fluid delivery system is segmented into separate high-pressure and low-pressure fluid paths. The high-pressure pump maintains its primary function while a separate low-pressure pump provides auxiliary fluid. This segmentation allows independent control of each fluid path, ensuring that diverting low-pressure fluid for auxiliary use does not compromise the high-pressure fluid delivery to the fuel injection system.
Solution Approach 2:
A low-pressure pump acts as an intermediary device that creates a separate low-pressure fluid path. This intermediary allows the auxiliary fluid delivery system to be supplied without directly diverting from the high-pressure pump, thereby maintaining the specified flow rate and pressure ranges for the primary function while enabling the secondary auxiliary use.
2Reliability
If a dedicated low-pressure supply system is installed for auxiliary use, then reliable low-pressure fluid can be supplied, but the cost and space requirements increase
Solution Approach 1:
The low-pressure pump is designed to serve multiple functions: it supplies fluid to the auxiliary delivery system and can also supply fluid to the high-pressure pump if needed. This multi-functionality reduces the need for separate dedicated systems, thereby reducing cost and space requirements while maintaining reliable low-pressure fluid supply for auxiliary uses.
Solution Approach 2:
Instead of discarding the low-pressure fluid path as redundant when a dedicated system is installed, the system recovers and utilizes the low-pressure pump for auxiliary purposes. This approach allows the same infrastructure to serve multiple purposes, reducing overall system complexity and cost while ensuring reliable fluid supply when needed.
3Adaptability or versatility
If fuel is diverted from the high-pressure fluid pump for catalytic converter regeneration, then the secondary use function is achieved, but the flow rate and pressure fall below specified ranges
Solution Approach 1:
The fluid delivery system is divided into separate high-pressure and low-pressure pathways. The high-pressure pump maintains its primary function of delivering fuel within specified ranges to the fuel injection system, while the low-pressure pump handles auxiliary functions such as catalytic converter regeneration. This segmentation enables the system to perform multiple functions simultaneously without compromising the reliability of the primary fluid delivery.
Data Source
AI summary
A pump component is removed from a port of a suction-side fluid cavity of a high-pressure fluid pump. The pump component performs a pump function for the high-pressure fluid pump. A primary coupler connects to the port. The pump component connects to the primary coupler. A diverter fluid passage diverts a low-pressure fluid from the primary coupler to an auxiliary fluid delivery system. The primary coupler communicates the low-pressure fluid through the pump component and primary coupler to the port.