Displacement Pump Regulating Piston Counterweight Control
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Solution Overview
Problem
Existing displacement pump regulating apparatuses can only maintain a constant delivery volume at high motor speeds, limiting variability and resulting in inefficient energy consumption.
Innovation Solution
Applying a force to the regulating piston against the spring element allows for active adjustment of the delivery volume, using means such as a solenoid valve, pneumatic valve, hydraulic valve, electric motor, or second spring element to influence the piston's position and control the pump's output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a spring element acts on the regulating piston to control delivery volume, then the pump can maintain a set delivery volume, but the delivery volume cannot be actively reduced below the assigned volume at high speeds
Solution Approach 1:
The invention introduces a counteracting force mechanism (solenoid valve, pneumatic valve, hydraulic valve, or second spring element) that applies force against the primary spring element's effective direction. This counter force enables the regulating piston to be positioned beyond what the primary spring alone would allow, actively reducing delivery volume below the assigned volume at high speeds and increasing variability while maintaining controllability.
2Reliability
If the delivery volume is maintained at the assigned volume at high speeds, then the pump operates reliably, but energy consumption increases due to constant delivery volume
Solution Approach 1:
The invention transforms the static delivery volume control into a dynamic system where the regulating piston can be actively repositioned using the counteracting force mechanism. This allows real-time adjustment of delivery volume based on actual system needs, enabling the pump to reduce delivery volume when full capacity is not required, thereby lowering internal resistance and energy consumption while maintaining operational reliability.
3Use of energy by moving object
If the delivery volume is actively reduced, then energy consumption decreases, but the device complexity increases due to additional force application means
Solution Approach 1:
The invention uses intermediary components (solenoid valve, pneumatic valve, or hydraulic valve) that connect to the regulating piston to apply counteracting force. These intermediaries translate control signals into mechanical force, enabling delivery volume reduction without requiring direct complex mechanical linkages. The valve-based approach maintains relatively simple integration with existing pumps while achieving active delivery volume control.
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 solution enables variable delivery volume adjustment, reducing energy consumption by lowering internal resistance and allowing for energy savings, particularly in motor vehicles, with low retrofitting costs and simple integration with existing pumps.
Implementation Method 1
a spring element acting on the regulating piston in the direction of displacement thereof
Implementation Method 2
the means for applying a force to the regulating piston comprises a solenoid valve
Implementation Method 3
the means for applying a force to the regulating piston comprises a pneumatic valve
Implementation Method 4
the means for applying a force to the regulating piston comprises a hydraulic valve
Implementation Method 5
the means for applying a force to the regulating piston comprises an electric motor
Implementation Method 6
the apparatus has a regulating piston which is displaced in its position via a differential pressure in a control pressure chamber
Data Source
AI summary
Apparatus for regulating delivery volume of a displacement pump comprises a displaceable regulating piston and a spring element acting on the regulating piston in a displacement direction (x) thereof. The apparatus further comprises a means for applying a force to the regulating piston against an effective direction (a) of the spring element.