Hydraulic Non-Return Valve for Adherence on Steep Slopes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hydraulic systems for vehicles face challenges in managing flow rates and adherence issues, particularly on steep slopes, requiring complex valve configurations and fine control to balance power distribution between axles, which increases costs and complexity.
Innovation Solution
A hydraulic transmission device with a non-return valve connecting the supply circuits of two pumps, allowing permanent fluidic communication between return circuits, simplifying the circuit and reducing pressure drops, and eliminating the need for intercommunication valves and their control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intercommunication valves and control systems are added to balance power distribution between axles, then adherence and performance on steep slopes are improved, but device complexity and cost increase
Solution Approach 1:
The patent removes the intercommunication valves and their control systems from the hydraulic circuit, simplifying the device while maintaining the ability to balance power distribution between axles through the non-return valve mechanism integrated into the pump outlets
Solution Approach 2:
The non-return valves at the pump outlets automatically regulate flow distribution to each axle based on their respective hydraulic demands, eliminating the need for external control systems or valves to manage power balance between axles
2Reliability
If flow rate dividers or limiters are added at pump outlets to prevent loss of adherence, then vehicle performance on difficult terrain is improved, but manufacturing cost and handling complexity increase
Solution Approach 1:
The patent eliminates flow rate dividers and limiters by integrating non-return valve functionality directly at the pump outlets, preventing adherence loss through a simpler, more manufacturable configuration
Solution Approach 2:
The non-return valves serve multiple functions simultaneously: preventing backflow, regulating flow distribution, and maintaining pressure balance, replacing what would otherwise require separate flow rate control components
3Ease of operation
If precise control of pump flow rates is implemented to balance motor operation on each axle, then motor coordination is improved, but device complexity and control system requirements increase
Solution Approach 1:
The non-return valves automatically balance the hydraulic flow to each axle based on the actual demands of the motors and hydraulic apparatus, eliminating the need for precise electronic or mechanical control of pump flow rates while maintaining optimal motor coordination
Solution Approach 2:
The non-return valve mechanism provides automatic feedback-based flow regulation, where the valve positioning responds to pressure and flow conditions in each circuit, naturally balancing power distribution without requiring external control systems
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 simplifies the hydraulic circuit, reduces costs, and maintains performance without the need for precise pump control, allowing for adaptable operation across various terrains and wheel configurations.
Implementation Method 1
a non-return valve between the supply circuits, the valve having a passage direction from the first to the second supply circuit
Data Source
AI summary
The invention relates to a hydraulic transmission device for a vehicle, said device comprising a first pump and a second pump, a first hydraulic apparatus and a second hydraulic apparatus, a first supply circuit connecting the first pump to the first apparatus, and a second supply circuit connecting the second pump to the second apparatus and wherein a non-return valve between the supply circuits, the valve having a direction for passing from the first to the second supply circuit, a first return circuit connecting the first apparatus to said pumps, a second return circuit the second apparatus to the admissions to said pumps so that the return circuits are in permanent fluidic communication with each other through a junction.