Integrated Vehicular Brake System Controller
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Solution Overview
Problem
The existing vehicular brake systems, including Electric Brake Systems (EBS) and Electronic Parking Brake (EPB) systems, are separately configured, leading to increased material costs and complexity due to redundant components and operation steps.
Innovation Solution
An integrated brake system is proposed, where an EBS system is configured to control both main and parking brakes using a single set of valves and a controller, incorporating an EPB valve to share pneumatic routes and simplify the brake control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If EBS and EPB systems are separately configured with separate valves and controllers, then each system can independently control its braking functions, but the material costs increase and the number of operation steps increases
Solution Approach 1:
The patent combines the EBS and EPB systems into a single integrated brake system where one controller manages both service braking and parking brake functions. The controller receives different input signals (brake pedal signal for EBS, parking brake signal for EPB) and accordingly activates different valves (EBS valve or EPB valve) to control compressed air flow to the brake chamber, eliminating the need for separate independent control systems while maintaining functional reliability
Solution Approach 2:
The integrated controller is designed to perform multiple functions: it can control both the EBS valve for service braking and the EPB valve for parking brake operation. The system universally handles different braking modes through a single control unit that responds to different input signals, reducing the overall number of controllers needed in the vehicle
2Reliability
If separate pneumatic routes are provided for EBS and EPB systems, then each system has dedicated air supply, but the material costs increase
Solution Approach 1:
The patent merges the pneumatic routes of EBS and EPB systems into a single shared air supply line connected to the air tank. The integrated controller selectively activates either the EBS valve or EPB valve to control compressed air flow to the brake chamber based on the operating mode, eliminating the need for separate dedicated pneumatic routes while ensuring reliable air supply for both functions
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
This integration simplifies the controller and reduces costs by allowing a single integrated controller to manage both EBS and EPB functions, optimizing the pneumatic route and reducing material requirements.
Implementation Method 1
The first EBS valve may be a two-port, two-position solenoid valve having a first port connected to the air tank and a second port connected to the relay valve. The second EBS valve may be a two-port, two-position solenoid valve having a first port connected to the relay valve and a second port connected to the check valve.
Implementation Method 2
The check valve may be connected to the relay valve, the EPB valve, the second EBS valve, and the exhaust port. The air line may be configured to allow only a flow of the compressed air discharged from the EBS valves to the exhaust port and a flow of the compressed air discharged from the EPB valve to the exhaust port.
Data Source
AI summary
A vehicular integrated brake system has an EBS and an EPB system integrated in the system to simplify a brake control system and reduce costs. An EBS function and an EPB function are incorporated by adding an EPB valve in the EBS valve system, so that the actuation of the EBS valves and the EPB valve can be controlled by a single integrated controller. A separate pneumatic route connecting the EPB is removed to optimize the pneumatic route. Thus, it is possible to simplify the controller and to reduce costs.