High Pressure Pump Integrated Volume Flow Control Valve
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Solution Overview
Problem
High-pressure pumps used in accumulator injection systems for internal combustion engines face challenges in withstanding high mechanical loads and pressures, leading to potential wear and high production costs, while existing solutions do not adequately ensure reliable and precise operation at high pressures.
Innovation Solution
A high-pressure pump design featuring a rotatable drive shaft, a pump unit with a cylinder housing and a high-pressure chamber, an axially movable piston, and an integrated volume flow control valve within the fluid inlet chamber, allowing for direct hydraulic connection and a compact, cost-effective structure with a snap connection and plastic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a volume flow control valve is integrated directly into the fluid inlet chamber, then device complexity is reduced and manufacturing cost decreases, but ensuring reliable operation at high pressures becomes more challenging
Solution Approach 1:
The volume flow control valve is integrated directly into the fluid inlet chamber, merging two previously separate components into one unified structure. This eliminates the need for external connecting lines and reduces the overall number of parts, thereby reducing device complexity and manufacturing cost while maintaining reliable operation through the unified design.
Solution Approach 2:
A seat structure is provided in the fluid inlet chamber that serves as an intermediary component for mounting the volume flow control valve. This seat structure facilitates the integration by providing a dedicated mounting interface, ensuring proper positioning and sealing, thereby enabling reliable high-pressure operation while maintaining the integrated compact design.
2Stress or pressure
If high-pressure pumps are designed to withstand pressures up to 2000 bar, then they can meet the requirements of accumulator injection systems, but material demands and production costs increase significantly
Solution Approach 1:
By integrating the volume flow control valve directly into the fluid inlet chamber, the patent reduces the total number of high-pressure components that need to be manufactured and assembled. This integration simplifies the manufacturing process and reduces production costs while still enabling the pump to withstand pressures up to 2000 bar through the unified structural design.
Solution Approach 2:
The fluid inlet chamber is designed to serve multiple functions: it acts as both the high-pressure fluid inlet chamber and the housing for the volume flow control valve. This multi-functionality reduces the need for separate components, thereby lowering production costs while maintaining the capability to withstand high pressures.
3Volume of moving object
If a compact design with integrated volume flow control valve is implemented, then device size is reduced, but ensuring precise operation at high pressures becomes more difficult
Solution Approach 1:
The integration of the volume flow control valve into the fluid inlet chamber creates a compact unified structure, reducing the overall pump size. The direct integration ensures precise operation by eliminating potential leakage points and reducing the number of moving parts, thereby maintaining manufacturing precision despite the compact design.
Solution Approach 2:
The seat structure serves as an intermediary that enables precise mounting of the volume flow control valve within the compact fluid inlet chamber. This intermediary component ensures accurate positioning and proper sealing, maintaining operation precision despite the reduced size of the integrated 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 design enables reliable and precise operation at high pressures with reduced wear and lower production costs, achieving a compact and efficient fluid delivery system capable of handling pressures up to 2000 bar without the need for additional connecting lines.
Implementation Method 1
an axially movable, with the drive shaft operatively connected high-pressure piston is arranged and which can be acted upon by high pressure
Implementation Method 2
a volume flow control valve which is designed to adjust the fluid inflow into the high-pressure pump
Implementation Method 3
the hollow-cylindrical base body with an inner wall that is in fluid-tight contact with the outer wall of the hollow-cylindrical section
Data Source
AI summary
The invention relates to a high pressure pump (10) for delivering a fluid, having a rotatable drive shaft (16), a pump unit (12) which can be driven by said drive shaft (16) and comprises a cylinder housing (14) having a fluid inlet chamber (30) and a high pressure chamber (21) which can be hydraulically coupled to the fluid inlet chamber (30) and in which an axially movable high pressure piston (20) is arranged that is operatively connected to the drive shaft (16) and can be subjected to high pressure, and a volume flow control valve (40). The volume flow control valve (40) is designed to set the fluid flow into the high pressure pump (10) and is at least partially arranged in the fluid inlet chamber (30).