Proportional Relief Manifold Pressure Matching for Power Take-Offs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Tractor trailer operators often fail to adjust fluid power system components to match the varying fluid power requirements of different trailers, leading to inefficient operation of trailer subsystems such as dump systems and walking floors.
Innovation Solution
A proportional relief manifold system with a proportional relief solenoid valve and pressure transducer, controlled by controller circuitry, adjusts fluid pressure to match desired pressures for different trailers, and an electronic control system adjusts engine parameters to optimize fluid power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single fluid power system is used to serve multiple trailers with different pressure requirements, then the system must be highly adaptable, but the fluid pressure cannot simultaneously match the varying requirements of different trailers
Solution Approach 1:
The relief valve is transformed from a static fixed-pressure component to a dynamic adjustable-pressure component. The valve allows operators to change the relief pressure setting based on the specific trailer being served, enabling a single fluid power system to adapt to multiple different pressure requirements of various trailers
Solution Approach 2:
The system changes the pressure parameter of the fluid power system based on the trailer type. By adjusting the relief valve pressure setting according to the specific trailer's requirements, the system dynamically modifies the operating pressure parameter to match different trailers' needs
2Stress or pressure
If operators manually adjust fluid power system components for each trailer, then pressure requirements can be met, but operator intervention time and complexity increase
Solution Approach 1:
The system provides pre-configured relief pressure settings for different trailer types. Before connecting to a trailer, the operator can select the appropriate pressure setting from pre-established options, eliminating the need for complex real-time adjustments and reducing intervention time
3Ease of manufacture
If fixed relief pressure is used in the fluid power system, then the system is simple to manufacture and operate, but it cannot accommodate varying pressure requirements of different trailers
Solution Approach 1:
The relief valve incorporates an adjustable mechanism that allows pressure settings to be changed while maintaining a relatively simple overall system structure. This dynamic capability is integrated into the existing fixed-pressure framework with minimal added complexity
Solution Approach 2:
The relief valve serves multiple functions: it operates as a fixed-pressure relief valve for standard operations and as an adjustable-pressure valve when different trailer requirements need to be accommodated. This multi-functionality allows a single component to handle both simplicity and adaptability needs
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 system ensures efficient operation of trailer subsystems by automatically adjusting fluid pressure and engine parameters to meet specific trailer requirements, reducing operator intervention and enhancing system efficiency and safety.
Implementation Method 1
The pressure transducer is mechanically coupled to the proportional relief solenoid valve. The pressure transducer is configured to measure an actual fluid pressure on the upstream side of the spool.
Implementation Method 2
The proportional relief solenoid valve includes a spool and defines an inlet port and an outlet port. Both the inlet port and the outlet port are configured to be in fluid communication with a fluid power line.
Data Source
AI summary
A proportional relief manifold system for a power take-off device includes a proportional relief solenoid valve. A pressure transducer is mechanically coupled to the proportional relief solenoid valve and is configured to measure an actual fluid pressure. Controller circuitry is in electrical communication with the pressure transducer and the proportional relief solenoid valve. The controller circuitry receives a desired fluid pressure and receives from the pressure transducer the measured actual fluid pressure. The controller circuitry determines a pressure difference between the received actual fluid pressure and the received desired fluid pressure and determines a pressure operating parameter based on the determined pressure difference. The controller circuitry modulates the actual fluid pressure by outputting the pressure operating parameter to the proportional relief solenoid valve to modify the actual fluid pressure to match the desired fluid pressure.