Split-Block Electronic Brake Layout for Hydraulic Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic brake systems face challenges in stability of hydraulic pressure generation due to electrical component failures, limited design freedom, and installation constraints, which can compromise safety and efficiency.
Innovation Solution
An electronic brake system comprising a mechanical unit with a simulation piston and master piston, an electrical unit with a hydraulic pressure supply device and control valves, and connection lines to efficiently generate and control hydraulic pressure, allowing for reduced part count, improved design freedom, and enhanced reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an electronic brake system with electrical components is used to enable complex braking operations, then adaptability and versatility are improved, but reliability deteriorates due to potential electrical component failures
Solution Approach 1:
The brake system is divided into two independent blocks: a mechanical unit (first block) containing the master cylinder that can generate hydraulic pressure mechanically, and an electrical unit (second block) containing the hydraulic pressure supply device that generates hydraulic pressure electrically. This segmentation allows the system to maintain reliability by having a mechanical backup while preserving adaptability through the electrical control capabilities.
Solution Approach 2:
A connection line hydraulically connects the mechanical unit and electrical unit, serving as an intermediary that allows either unit to supply hydraulic pressure to the wheel cylinders. This intermediary connection enables the system to switch between mechanical and electrical hydraulic pressure sources, ensuring reliability while maintaining operational versatility.
2Adaptability or versatility
If multiple separate components are used in the electronic brake system, then adaptability is improved, but device complexity and weight increase
Solution Approach 1:
The master cylinder is designed as an integrated unit combining the simulation piston, master piston, simulation chamber, master chamber, and elastic member within a single cylindrical structure. This merging reduces the number of separate parts while maintaining the adaptability of the braking system through the integrated dual-chamber design.
Solution Approach 2:
The connection line serves multiple functions: it hydraulically connects the mechanical unit to the electrical unit, can transmit hydraulic pressure from either unit to the wheel cylinders, and provides a pathway for pressure equalization. This multi-functionality reduces the need for separate dedicated components for each function.
3Reliability
If traditional brake system components are used, then reliability is maintained, but design freedom and installation flexibility are limited
Solution Approach 1:
Dividing the brake system into separate mechanical and electrical blocks allows each block to be positioned independently within the vehicle. The mechanical unit can be installed near the brake pedal while the electrical unit can be positioned elsewhere, providing design freedom and installation flexibility while maintaining reliable braking performance through the hydraulic connection between units.
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 reduces the number of parts and weight, improves design freedom, facilitates efficient installation, enhances productivity, and ensures reliable braking performance across various operating conditions.
Implementation Method 1
an elastic member provided between the simulation piston and the master piston
Implementation Method 2
a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston by an electric signal
Implementation Method 3
a master piston connected to the simulation piston, a master chamber whose volume is changed by a displacement of the master piston
Data Source
AI summary
Disclosed herein an electronic brake system includes a first block in which a mechanical unit operated mechanically in association with a brake pedal is disposed; a second block in which an electrical unit electronically operated and controlled by an electronic control unit is disposed; and a connection line configured to hydraulically connect the first block and the second block, and the first block and the second block are installed at positions spaced apart in a vehicle so that mountability of the brake system and the degree of freedom in design of the vehicle may be improved.