Compact Pressure Measurement Device for Braking Systems
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Solution Overview
Problem
Existing pressure measurement devices in motor vehicles have a significant radial or lateral footprint due to the arrangement of pressure sensors and measurement cavities, which can be critical for dimensioning braking systems and surrounding components.
Innovation Solution
A compact pressure measurement device design featuring a retaining member with a channel coupling the first chamber and measurement cavity, a support to delimit the measurement cavity, and a plug with an elastically deformable membrane for reduced footprint and accurate pressure measurements, along with a seal for fluid-tight sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pressure sensor and measurement cavity are arranged on the periphery of the first chamber, then the pressure measurement function is achieved, but the radial footprint of the device increases
Solution Approach 1:
The patent merges the measurement cavity with the first chamber by creating a common volume space. The bottom wall of the first chamber forms part of the measurement cavity, eliminating the need for a separate peripheral measurement cavity. This integration allows the pressure sensor to be positioned within the chamber structure itself, reducing the radial footprint while maintaining pressure measurement capability.
Solution Approach 2:
The patent transitions from a radial arrangement of components to an axial arrangement. By utilizing the vertical dimension (height of the chamber) rather than radial expansion, the measurement cavity is formed within the existing chamber volume. This dimensional shift allows pressure sensing without increasing the radial footprint of the device.
2Measurement precision
If multiple separate components are used for pressure measurement, then the measurement function is achieved, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into integrated components. The first chamber serves dual purposes as both a fluid processing chamber and a measurement cavity. The bottom wall of the chamber acts as both a structural element and a pressure sensing surface. This merging reduces the number of separate components and simplifies the overall device architecture.
Solution Approach 2:
The first chamber is designed with multi-functionality, serving both as a fluid processing chamber and as a pressure measurement cavity. This universal design eliminates the need for separate dedicated measurement chambers, reducing component count and simplifying the device structure while maintaining both fluid processing and pressure measurement capabilities.
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 solution allows for a reduced radial footprint, accurate pressure measurements, and easy assembly, while ensuring reliable sealing and efficient operation within the constraints of motor vehicle braking systems.
Implementation Method 1
a plug with an elastically deformable membrane for reduced footprint and accurate pressure measurements
Data Source
AI summary
A pressure measurement device has: a first chamber coupled to at least one fluid utilization unit, a second chamber coupled to a vacuum source, a seat with a passage for the fluid between the first and the second chamber, a plug for allowing or blocking the fluid flow through the passage, a retaining member for retaining the plug against the seat, a pressure sensor, and a measurement cavity coupled to the first chamber. The retaining member has a channel arranged to couple the first chamber and the measurement cavity.