Brake System Volume Determination via Displacement Sensor
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Solution Overview
Problem
Existing brake systems for motor vehicles face challenges in accurately determining the volume of brake medium to be displaced for a desired brake pressure, leading to inconsistencies in braking performance due to deformation of components and tolerances in the system.
Innovation Solution
A brake system with a sensor to measure the distance difference of a displacement means, allowing indirect determination of the volume of brake medium displacement, and a compensating means driven by a motor to adjust brake medium volumes, ensuring precise and reliable brake pressure application, including the use of a piston and cylinder configuration with an elastic element to account for deformations and minimize volume discrepancies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the volume of brake medium is determined based on piston position and area calculations, then the braking system can provide a defined braking force, but deformation of components and system tolerances lead to inaccuracies in volume determination
Solution Approach 1:
The patent replaces the mechanical calculation method (based on piston position and area) with a direct sensor-based measurement system. A distance sensor directly measures the displacement of the brake medium, eliminating the need for calculations that are sensitive to component deformations and tolerances. This substitution of measurement methodology directly resolves the contradiction by providing accurate volume determination without being affected by mechanical variations in the system.
Solution Approach 2:
The patent introduces a distance sensor as an intermediary measurement device between the brake pedal operation and the brake medium displacement measurement. This intermediary sensor provides direct feedback on the actual displacement, serving as a mediator that bridges the gap between the mechanical input and the hydraulic output, thereby enabling precise volume determination despite component deformations.
2Measurement precision
If a sensor-based measurement system is implemented to accurately determine brake medium volume, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent leverages the existing displacement means in the brake system and equips it with a distance sensor that serves multiple functions: measuring brake pedal displacement, determining brake medium volume, and providing feedback for braking force control. By making the measurement system multi-functional, the patent achieves high measurement precision without proportionally increasing device complexity, as the same sensor infrastructure serves multiple purposes within 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 system enables simple, reliable, and precise determination of brake medium volume, improving braking control and accuracy by compensating for system deformations and tolerances, ensuring well-measured braking performance.
Implementation Method 1
the sensor is configured to sensing a displacement difference of a displacement means for the displacement of volume of the brake medium
Implementation Method 2
a brake pressure supply device for providing brake pressure by means of a brake medium
Implementation Method 3
the brake force device is designed to compensate for deformation of the brake system components due to changes in the brake medium pressure
Data Source
Figure 1
AI summary
The invention relates to a brake system, in particular for a motor vehicle, comprising a brake force device with a brake booster for boosting a brake force and a brake pressure supply device for providing brake pressure by means of a brake medium, a brake device, to which the brake pressure supply device can apply pressure via the brake medium, and at least one sensor, which is designed to detect a displacement difference of a displacement means for the displacement of volumes of the brake medium of the brake force device and wherein the brake force device is designed to determine the volume of brake medium to be displaced on the basis of the detected displacement difference. The invention also relates to a corresponding method and to a corresponding use.