Hydraulic Block Sensor Placement for Brake Pressure Accuracy
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Solution Overview
Problem
Existing hydraulic blocks in slip-regulated vehicle brake systems face challenges in arranging pressure sensors in a space-saving and compact manner, leading to longer and angled connection lines that can disrupt pressure measurements due to fluctuating brake pressures.
Innovation Solution
The arrangement of brake master cylinder pressure sensors and pressure sensors for brake circuits within the hydraulic block, positioned outside the rows of brake pressure build-up and reduction valves, and in a central plane or on opposite sides, reduces the length and angle of connection lines, enhancing measurement accuracy and slip regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pressure sensors are arranged within the rows of brake pressure valves, then the hydraulic block structure is simplified, but the connection lines become longer and more angled which disrupts pressure measurement accuracy
Solution Approach 1:
The patent applies dimensional change by moving the pressure sensor receivers from the horizontal plane (within valve rows) to the outer surface of the hydraulic block. This spatial relocation creates shorter, more direct connection paths that reduce pressure reflections and improve measurement accuracy while maintaining structural integration.
2Measurement precision
If pressure sensors are arranged on opposite sides of the hydraulic block, then pressure measurement accuracy is improved through shorter connection lines, but the device complexity increases
Solution Approach 1:
The patent segments the hydraulic block into distinct functional zones: pressure sensor receivers are positioned on the outer surface in a first region, while brake pressure valves are arranged in separate rows in a second region. This spatial segmentation allows optimized connection paths for each component type, reducing interference and improving measurement accuracy.
Solution Approach 2:
The patent utilizes the outer surface dimension of the hydraulic block to position pressure sensor receivers, creating a three-dimensional layout that optimizes connection line lengths. This dimensional approach allows sensors to be accessed from the exterior while maintaining compact internal valve arrangements.
3Ease of manufacture
If connection lines for pressure sensors are made longer to accommodate valve row arrangements, then easier manufacturing is achieved, but pressure reflections increase and measurement accuracy decreases
Solution Approach 1:
The patent incorporates pressure sensor receivers directly into the hydraulic block structure during manufacturing, with pre-planned connection paths to the valve system. This preliminary integration eliminates the need for separate, lengthy external connections, reducing pressure reflections while maintaining manufacturing efficiency through unified block fabrication.
Data Source
AI summary
A hydraulic block for a hydraulic assembly of a slip-regulated, hydraulic vehicle brake system, comprises a first plurality of receivers aligned in a first row that are each configured to fluidly connect to a respective brake pressure, and a second plurality of receivers aligned in a parallel second row that are each configured to fluidly connect to a respective brake pressure reduction valve. The second row is spaced from the first row in a first direction. The hydraulic block further comprises a first further receiver that fluidly connects to a brake master cylinder pressure sensor. The first further receiver is located perpendicularly offset from the first row in a second direction opposite the first direction and within a plane extending between two of the first plurality of receivers and between two of the second plurality of receivers and that is outside of a center plane defined by the hydraulic block.