Integrated Brake Hydraulic Unit for Stable Pressure in Compact Layouts
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Solution Overview
Problem
Existing brake systems face challenges in maintaining stable hydraulic pressure generation and compact size, especially when components fail, which can compromise safety and design freedom in vehicles.
Innovation Solution
A hydraulic unit with a compact design that includes a hydraulic block with a motor bore, valve bore, and electronic control unit, which uses electrical signals to generate hydraulic pressure and control valve operations, while minimizing size and interference with surrounding components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic brake systems with additional components for autonomous driving are installed, then braking functions and convenience are improved, but the size of the hydraulic block increases and interference with surrounding components occurs
Solution Approach 1:
The patent combines the electronic control unit with the hydraulic block into an integrated assembly, where the electronic control unit is mounted directly on the hydraulic block. This merging of components reduces the overall size by eliminating separate mounting spaces and connection interfaces, while maintaining all necessary braking functions including autonomous driving capabilities.
Solution Approach 2:
The hydraulic block is designed with multi-functionality by integrating both hydraulic pressure generation and electronic control functions into a single compact unit. The electronic control unit handles multiple braking modes (normal braking, autonomous emergency braking, regenerative braking) while the hydraulic block provides pressure generation and transmission, allowing one component to serve multiple purposes.
2Adaptability or versatility
If electronic components are added for autonomous driving assistance, then driver convenience is improved, but design freedom and space utilization are reduced
Solution Approach 1:
The electronic control unit is physically and functionally integrated with the hydraulic block, combining what would traditionally be separate systems into one unified component. This reduces the number of discrete parts, connection points, and mounting requirements, thereby simplifying the overall system while maintaining autonomous driving capabilities.
3Reliability
If a mechanically connected booster is used, then stable hydraulic pressure generation is achieved, but various braking functions responding to vehicle environment cannot be implemented
Solution Approach 1:
The patent replaces the traditional mechanically connected booster system with an electric motor-driven hydraulic pressure generation system. The electric motor can be precisely controlled by the electronic control unit to generate hydraulic pressure on demand, enabling various braking functions (normal braking, autonomous emergency braking, regenerative braking) while maintaining stable pressure generation through electronic control.
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 hydraulic unit achieves stable braking performance, improved design freedom, and reduced interference with surrounding components, ensuring reliable operation even in abnormal conditions and enhancing vehicle space utilization.
Implementation Method 1
a motor bore provided with a motor that generates hydraulic pressure by operating by an electrical signal output corresponding to displacement of the brake pedal
Implementation Method 2
a hydraulic flow path, and a valve bore provided with a valve that controls a flow of a pressurized medium through the hydraulic flow path
Data Source
AI summary
Disclosed herein is a hydraulic unit of a brake system. The hydraulic unit in accordance with the present embodiment may include a hydraulic block including a cylinder bore provided with a master cylinder connected to a brake pedal, a motor bore provided with a motor that generates hydraulic pressure by operating by an electrical signal output corresponding to displacement of the brake pedal, a hydraulic flow path, and a valve bore provided with a valve that controls a flow of a pressurized medium through the hydraulic flow path and an electronic control unit configured to control operation of the motor and the valve based on information on the displacement of the brake pedal.