Hydraulic Pressure Regulation for Fast Actuator Flow Control
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Solution Overview
Problem
Existing hydraulic systems for working machines, such as skid steer loaders and compact track loaders, face inefficiencies in controlling fluid flow rates and pressures, leading to suboptimal operability and momentum transfer in hydraulic actuators.
Innovation Solution
The hydraulic system incorporates differential pressure regulators and proportional valves to manage the differential pressure between hydraulic receivers, allowing for precise control of fluid flow rates and pressures, enabling quick movement of hydraulic actuators and improved machine operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hydraulic systems are used without differential pressure regulation, then the system structure is simple, but the fluid flow rate control is inefficient and momentum transfer is suboptimal
Solution Approach 1:
The hydraulic system is segmented into multiple independent pressure control zones using differential pressure regulators. Each regulator independently manages pressure differential across specific hydraulic receivers, allowing precise flow rate control without requiring complete system redesign. This segmentation enables targeted optimization of fluid flow control while maintaining overall system simplicity.
Solution Approach 2:
Differential pressure regulators are introduced as intermediary devices between the hydraulic pump and hydraulic receivers. These regulators act as mediators that precisely control the pressure differential across receivers, thereby optimizing fluid flow rate and momentum transfer without requiring direct complex control mechanisms in each receiver.
2Ease of operation
If differential pressure regulators are added to control fluid pressure, then operability and momentum transfer improve, but system complexity increases
Solution Approach 1:
The differential pressure regulators are designed as self-regulating devices that automatically maintain the required pressure differential across hydraulic receivers. The regulators inherently sense and adjust pressure without requiring external control systems or operator intervention, thereby improving machine operability while adding minimal complexity to the hydraulic system structure.
3Measurement precision
If precise pressure control is implemented, then fluid flow rate management improves, but the hydraulic system becomes more complex
Solution Approach 1:
The differential pressure regulators replace complex mechanical pressure control systems with streamlined pressure-regulating mechanisms. By using pressure differential-based regulation instead of complex mechanical linkages and control systems, the invention achieves precise pressure control while minimizing the addition of system complexity.
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 configuration enhances the operability of working machines by ensuring efficient fluid pressure management, allowing for rapid movement of hydraulic components and increased momentum transfer, thereby improving overall machine performance.
Implementation Method 1
a differential pressure regulator to supply the operation fluid to the first hydraulic receiver and the second hydraulic receiver, the differential pressure regulator being configured to regulate a differential pressure between a first pressure that is a pressure of the operation fluid applied to the first hydraulic receiver and a second pressure that is a pressure of the operation fluid applied to the second hydraulic receiver
Data Source
AI summary
A hydraulic system for a working machine, includes a hydraulic device to change a flow rate of an operation fluid. The hydraulic device includes a first hydraulic receiver to which the operation fluid is applied, a second hydraulic receiver to which the operation fluid is applied, and a movable portion to be moved by the operation fluid applied to any one of the first hydraulic receiver and the second hydraulic portion. A hydraulic system further includes a differential pressure regulator to supply the operation fluid to the first hydraulic receiver and the second hydraulic receiver, the differential pressure regulator being configured to regulate a differential pressure between a first pressure that is a pressure of the operation fluid applied to the first hydraulic receiver and a second pressure that is a pressure of the operation fluid applied to the second hydraulic receiver.