Auxiliary Brake Hydraulics With Fewer Lines for Fail-Safe Control
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Solution Overview
Problem
Conventional electro-hydraulic braking systems for autonomous vehicles require complex and costly assembly due to the need for multiple pipelines, increasing weight and manufacturing complexity.
Innovation Solution
An electro-hydraulic braking system with an auxiliary braking system capable of performing 2-channel compression/decompression and 1-channel decompression control, utilizing a reduced number of inlet and outlet lines with pumps and valves to simplify the hydraulic circuit and reduce assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional auxiliary braking system performs 2-channel compression/decompression control and 2-channel decompression control with eight pipelines, then the braking function is reliable, but the cost and weight are increased and assembly is complicated
Solution Approach 1:
The patent combines multiple braking control functions (2-channel compression/decompression and 1-channel decompression) into a single integrated auxiliary braking system with unified pipeline architecture. The first and second inlet lines are merged into a common hydraulic circuit structure, reducing the total pipeline count from eight to six while maintaining all required braking control functions through strategic valve and pump placement.
Solution Approach 2:
The auxiliary braking system is designed with multi-functional capability where the same set of six pipelines serves multiple braking control purposes. The system can perform 2-channel compression/decompression control for front wheels and 1-channel decompression control for rear wheels using the same hydraulic circuit infrastructure, making the pipeline system universal for different braking operations.
2Adaptability or versatility
If a conventional auxiliary braking system uses eight pipelines for 2-channel compression/decompression and 2-channel decompression control, then all braking functions are available, but the manufacturing cost is increased
Solution Approach 1:
The patent merges the hydraulic circuit requirements for different braking functions into a single six-pipeline architecture. By combining the first and second inlet lines into a shared circuit with common valves and pumps, the system achieves multiple braking control capabilities (2-channel compression/decompression and 1-channel decompression) with fewer physical components, directly reducing manufacturing material costs and assembly expenses.
Solution Approach 2:
The auxiliary braking system employs universal multi-functional components where the same six pipelines and associated valves serve multiple braking control functions. This universality allows the system to perform 2-channel compression/decompression control and 1-channel decompression control using identical hydraulic infrastructure, eliminating the need for separate dedicated pipelines for each function and thereby reducing overall manufacturing cost.
3Reliability
If a conventional auxiliary braking system connects eight pipelines including four input pipelines and four output pipelines, then complete braking control is achieved, but the weight is increased
Solution Approach 1:
The patent merges the hydraulic circuit architecture by combining multiple inlet lines into a shared six-pipeline structure. The first and second inlet lines are integrated into a common circuit with shared valves and pumps, reducing the total pipeline count from eight to six. This merging directly reduces the weight of the brake system by eliminating redundant hydraulic components and connections while preserving complete braking control capability.
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 achieves cost reduction and simplified assembly by reducing the number of required pipelines, enabling efficient fail-safe functions while maintaining effective braking performance.
Implementation Method 1
an actuating unit which is connected to a point on the first inlet line and a point on the second inlet line, is configured to increase the internal hydraulic pressure of the first outlet line and the internal hydraulic pressure of second inlet line, and includes a first pump and a second pump
Data Source
AI summary
According to an embodiment of the present invention, provided is an electro-hydraulic braking system including an auxiliary braking system capable of performing a 2-channel compression/decompression control and a 1-channel decompression control.