Parallel-Displaced Valve Axis Compact High Pressure Pump
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Solution Overview
Problem
Conventional high pressure pumps with plungers are often elongated in both axial and radial directions due to the arrangement of components, leading to increased size and potential interference with other components during mounting, making them difficult to mount and integrate with engines.
Innovation Solution
The design features a high pressure pump with a plunger and valve member where the movable axis of the valve member is displaced in parallel to the plunger's axis, allowing for a more compact structure by offsetting the coil portion and other components, reducing the pump's dimensions in both axial and radial directions, and efficiently arranging the coil portion within the pump's housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the movable axis of the valve member is substantially coaxial with respect to the movable axis of the plunger, then the high pressure pump can be compact in the radial direction, but the high pressure pump becomes elongated in the axial direction
Solution Approach 1:
The patent transitions from a coaxial arrangement (one-dimensional alignment) to a parallel-displaced arrangement where the valve member axis is offset from the plunger axis. This dimensional change allows components to be distributed more efficiently in three-dimensional space, reducing axial length while maintaining radial compactness
2Length of moving object
If the movable axis of the valve member is substantially perpendicular to the movable axis of the plunger, then the high pressure pump can be compact in the axial direction, but the high pressure pump becomes elongated in the radial direction
Solution Approach 1:
The patent avoids the perpendicular arrangement that would increase radial footprint by instead using a parallel-displaced configuration. This allows the valve member to be positioned offset from the plunger axis without extending the radial dimensions, effectively utilizing the axial-direction offset to achieve compactness in both directions
3Adaptability or versatility
If various components are assembled to the pump housing, then the high pressure pump can be functionally complete, but the high pressure pump becomes jumboized and difficult to mount
Solution Approach 1:
The patent integrates the coil portion, fuel passage, and other components into a unified assembly where the coil portion is positioned in the axial direction of the valve member rather than radially outward. This merging of components into a compact, multi-functional assembly reduces the overall pump size while maintaining all necessary functions
Solution Approach 2:
The patent repositions components from radial arrangement to axial arrangement, particularly placing the coil portion in the axial direction of the valve member. This dimensional reorganization allows functional completeness without radial elongation, reducing the pump's overall volume and improving mountability
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 results in a smaller, more compact high pressure pump that reduces interference with other components during mounting and allows for efficient integration with engines, while maintaining effective fuel pressurization and control.
Implementation Method 1
a coil portion, which moves the valve member
Implementation Method 2
The plunger is movable substantially along a movable axis in a substantially axial direction of the plunger. The plunger is capable of pressurizing fuel in the pump chamber
Data Source
AI summary
A high pressure pump has a fuel passage and a pump chamber. Fuel flows into the pump chamber through the fuel passage. The high pressure pump includes a valve member and a plunger. The valve member is movable along a movable axis in a substantially axial direction of the valve member for controlling an amount of fuel flowing into the pump chamber through the fuel passage. The plunger is movable substantially along a movable axis in a substantially axial direction of the plunger. The plunger is capable of pressurizing fuel in the pump chamber to discharge fuel in the pump chamber. The movable axis of the valve member is displaced from the movable axis of the plunger substantially in parallel with each other.