Flow Sharing in Hydraulic Transformers for Efficient Load Handling
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Summary
Problems
Hydraulic systems in heavy machinery face challenges in achieving high flow demands smoothly, particularly when lifting or moving loads against gravity, as hydraulic transformers may not be sufficient to supply the required flow, leading to inefficient fuel usage and operator discomfort due to dynamic responses.
Innovation solutions
A hydraulic system with a controller that implements flow sharing between a hydraulic transformer and pumps, using directional flow control valves and an accumulator to optimize flow distribution, ensuring that the hydraulic transformer can independently supply the desired flow or supplement it with additional sources to meet demand, thereby reducing dynamic responses and enhancing fuel efficiency.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the hydraulic transformer operates independently to supply flow, then the system structure is simplified, but the flow demand cannot be met during high flow services
Why choose this principle:
The patent combines the hydraulic transformer with a pump system to create a hybrid flow supply architecture. The controller integrates multiple flow sources (transformer and pump) into a unified system that can deliver combined flow capacity exceeding what either component could provide independently, thus resolving the contradiction between simplified structure and adequate flow supply.
Principle concept:
If the hydraulic transformer operates independently to supply flow, then the system structure is simplified, but the flow demand cannot be met during high flow services
Why choose this principle:
The hydraulic transformer is designed to perform multiple functions: it can operate independently for normal flow demands and work in conjunction with the pump system for high flow demands. This multi-functionality allows the same component to adapt to varying flow requirements without requiring entirely different system configurations.
Application Domain
Data Source
AI summary:
A hydraulic system with a controller that implements flow sharing between a hydraulic transformer and pumps, using directional flow control valves and an accumulator to optimize flow distribution, ensuring that the hydraulic transformer can independently supply the desired flow or supplement it with additional sources to meet demand, thereby reducing dynamic responses and enhancing fuel efficiency.
Abstract
To achieve flow demands for high flow services, a hydraulic system shares a flow between a hydraulic transformer and one or more hydraulic pumps. The hydraulic transformer is in selective fluid communication with the pumps and actuates a first load. A second load is driven by an actuator in selective fluid communication with the pumps and the hydraulic transformer. The hydraulic system includes a controller to reduce dynamic responses in the system by causing flow sharing between the hydraulic transformer and a directional flow control valve.