Hydraulic Assembly for Vehicle Brake System Pressure Control
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Solution Overview
Problem
Conventional vehicle brake systems rely on driver-initiated hydraulic pressure, which may not be sufficient for enhanced safety features like system braking operations, and existing solutions like dual-circuit electrohydraulic brake systems are complex and costly.
Innovation Solution
A hydraulic assembly for a vehicle brake system that includes a pressure generator for central hydraulic pressure generation independently of the driver, with a pressure adjuster to customize pressure for each brake circuit, using valve devices and control electronics for precise pressure control and integration with a modular structure for flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dual-circuit electrohydraulic brake system with individual pressure generators for each brake circuit is used, then system reliability and independent pressure control are improved, but device complexity and cost increase
Solution Approach 1:
The patent combines two separate pressure generators into a single unit that can serve both brake circuits. The merged pressure generator includes a common drive mechanism and housing, reducing the number of components while maintaining the ability to independently control pressure in each brake circuit through separate control valves and fluid pathways.
Solution Approach 2:
The single pressure generator is designed with multi-functionality to replace two separate pressure generators. It includes a common drive shaft that can operate multiple pistons or pumping elements, and a control system that can independently regulate pressure for each brake circuit, achieving universal functionality with reduced complexity.
2Device complexity
If driver-initiated hydraulic pressure generation is used, then system simplicity is maintained, but braking performance for safety systems is insufficient
Solution Approach 1:
The patent introduces a pressure generator as an intermediary device between the driver's brake pedal input and the brake circuits. This pressure generator can amplify and supplement the driver's hydraulic pressure, ensuring sufficient braking force for safety systems while maintaining a relatively simple overall system architecture compared to fully independent dual-pressure-generator 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
Enables efficient generation and adjustment of hydraulic pressure in vehicle brake systems, supporting both driver-initiated and system braking operations, while simplifying the system architecture and enhancing safety through modular design and precise pressure control.
Implementation Method 1
a pressure generator for generating a hydraulic pressure in the brake circuits independently of the driver
Implementation Method 2
at least one pressure adjuster device for adjusting for each individual brake circuit the central hydraulic pressure generated by the pressure generator independently of the driver
Data Source
AI summary
A hydraulic assembly for a vehicle brake system comprising at least two brake circuits and wheel brakes associated with the brake circuits. The hydraulic assembly comprises a pressure generator for generating a central hydraulic pressure for the brake circuits independently of the driver at least in the case of service braking initiated by the driver. Furthermore, at least one pressure adjusting device is provided for adjusting for each individual brake circuit the central hydraulic pressure that is generated by the pressure generator independently of the driver.