Brake Hydraulic Unit Layout With Redundant ECU Integration
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Solution Overview
Problem
Existing electronic brake systems face challenges in maintaining stable hydraulic pressure generation and safety when electric component failures occur, and they also face limitations in size and installation due to increased components for autonomous driving features.
Innovation Solution
A compact hydraulic unit for brake systems that includes a hydraulic block with a master cylinder, a motor for generating hydraulic pressure via electrical signals, a valve for controlling fluid flow, and an electronic control unit with redundant circuit boards and connectors, optimized for efficient installation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If electronic brake systems with additional components for autonomous driving are installed, then braking functions and automation are improved, but the size of the hydraulic block increases and installation space is reduced
Solution Approach 1:
The electronic control unit is integrated directly onto the hydraulic block, merging two previously separate components into one unified structure. This integration eliminates the need for separate mounting space for the electronic control unit while maintaining all necessary braking functions including autonomous driving capabilities.
Solution Approach 2:
The hydraulic block is designed to serve multiple functions: it houses both the hydraulic components and the electronic control unit, effectively making it a multi-functional component that handles both mechanical hydraulic operations and electronic control signals for various braking modes.
2Extent of automation
If electronic brake systems with additional components are installed, then automation capabilities are improved, but installation location options are limited and interference with surrounding components occurs
Solution Approach 1:
By combining the electronic control unit with the hydraulic block into a single integrated assembly, the system reduces its overall footprint and eliminates the need for separate installation locations for electronic and hydraulic components, thereby increasing adaptability to various vehicle layouts.
3Reliability
If redundant circuit boards are added to the electronic control unit, then operational reliability is improved, but the size and complexity of the electronic control unit increases
Solution Approach 1:
The electronic control unit is mounted on the outer surface of the hydraulic block rather than being housed within it, utilizing the available external space. This dimensional approach allows for larger electronic components including redundant circuit boards without increasing the overall footprint of the braking system.
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 enables stable braking performance even in various operating situations, improves design freedom and space utilization in vehicles, and enhances device durability and operational reliability by preventing interference with surrounding components.
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
Figure 1
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AI summary
Disclosed herein is a hydraulic unit (1) of a brake system. The hydraulic unit (1) in accordance with the present embodiment may include a hydraulic block (100) including a cylinder bore provided with a master cylinder (500) connected to a brake pedal, a motor bore (111) provided with a motor (300) 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 (200) configured to control operation of the motor (300) and the valve based on information on the displacement of the brake pedal, the motor bore (111) may be provided on a first surface (101) of the hydraulic block (100) and a housing (230) of the electronic control unit (200) may be provided on a second surface (102) of the hydraulic block (100) opposite to the first surface (101), the electronic control unit (200) may include a first circuit board and a second circuit board, a first connector (210) configured to supply electric power or transmit an electrical signal to the first circuit board may be positioned on an upper side of a third surface (103) forming an upper surface between the first surface (101) and the second surface (102), and a second connector (220) configured to supply electric power or transmit an electrical signal to the second circuit board may be positioned on a front side of a fourth surface (104) forming a front surface between the first surface (101) and the second surface (102).