Electric Hydraulic Brake Valve for Remote Pressure Modulation
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Solution Overview
Problem
Emergency brake systems in vehicles, particularly aircraft, face challenges in efficiently and reliably engaging and disengaging brakes from a remote location with varying degrees of pressure, often relying on mechanical mechanisms that are prone to damage and lack precise control.
Innovation Solution
A hydraulic brake valve system with an electric motor actuator and a hydraulic brake valve system that uses a valve housing with a brake port, pressure port, and return port, controlled by an actuator shaft and valve shaft, allowing for precise modulation of hydraulic pressure to engage or disengage brakes electronically, with an accumulator for pressure storage and a mechanism for manual release without electric power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical mechanism is used to relay operator commands to the emergency brake, then the operator can engage the brake from a remote location, but the mechanism is prone to damage and lacks precise control
Solution Approach 1:
The patent replaces the mechanical cable-based actuation system with an electric motor actuator that uses electrical signals to control the brake. The motor actuator receives commands from the operator through electrical wiring instead of mechanical cables, eliminating the mechanical linkages that are prone to damage and providing more reliable remote operation.
Solution Approach 2:
The patent incorporates a hydraulic brake valve system where the electric motor actuator controls a valve that regulates hydraulic pressure to engage or disengage the brake. This hydraulic mechanism provides precise control over the brake engagement force and eliminates the need for direct mechanical force transmission from the operator to the brake.
2Ease of operation
If a mechanical mechanism is used to relay operator commands, then remote engagement is possible, but precise control of brake pressure is lacking
Solution Approach 1:
The electric motor actuator provides precise control over the brake engagement process by using electrical signals to control the hydraulic valve. The motor can be controlled to move to specific positions, allowing the operator to engage the brake with precise pressure control rather than relying on mechanical force transmission.
Solution Approach 2:
The hydraulic brake valve system enables precise pressure control by using hydraulic fluid to transmit force. The valve regulated by the electric motor can precisely modulate the hydraulic pressure applied to the brake, providing fine control over the engagement force that cannot be achieved with simple mechanical linkages.
3Reliability
If an electric motor actuator is used to control the hydraulic brake valve, then precise control and reliable engagement are achieved, but the system requires electric power
Solution Approach 1:
The system includes a spring-loaded mechanism that automatically engages the brake when electric power is unavailable. The spring is pre-loaded and ready to actuate the brake valve, providing a fail-safe mechanism that does not require electric power for emergency brake engagement.
Solution Approach 2:
The spring-loaded mechanism provides automatic brake engagement without requiring external power or control systems. When power is lost or the system needs to be reset, the spring automatically performs the brake engagement function, making the system self-sufficient for critical safety functions.
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
Enables precise control and reliable engagement/disengagement of brakes, reducing the risk of mechanical damage and providing easy operation without continuous electric power, allowing for safe and efficient emergency braking and parking operations.
Implementation Method 1
A hydraulic brake valve system with an electric motor actuator and a hydraulic brake valve system that uses a valve housing with a brake port, pressure port, and return port
Implementation Method 2
with an accumulator for pressure storage and a mechanism for manual release without electric power
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A hydraulic brake valve system (300) may comprise a valve housing (310) comprising a brake port (312), a pressure port (314), a return port (316), and a valve actuation end (318); a valve shaft (322) coupled to the valve actuation end (318), wherein the valve shaft (322) may be comprised at least partially within the valve housing (310); and an electric actuator (350) coupled to the valve shaft (322), wherein the electric actuator (350) may be configured to move the valve shaft (322) between a shaft on position and a shaft off position. The hydraulic brake valve system (300) may be configured to pass hydraulic pressure through at least one of the brake port (312), the pressure port (314), or the return port (316) in response to a position of the valve shaft (322).