Hydraulic Block Projections Extend Piston Stroke
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Solution Overview
Problem
Conventional hydraulic units for vehicle power brake systems have a power piston that is not directly accommodated in the power cylinder bore, requiring a protruding bushing to extend the piston stroke, which may compromise the mechanical integrity and efficiency of brake pressure generation and regulation.
Innovation Solution
A cuboid hydraulic block with a power cylinder bore and anti-rotation guide, featuring projections to extend the power piston stroke and secure it against rotation, integrated with an electric motor and worm gear for efficient brake pressure generation and regulation, and connected to hydraulic components via drilled receptacles and lines for slip control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a protruding bushing is used to extend the power piston stroke, then the piston stroke is extended, but the mechanical integrity and efficiency of brake pressure generation is compromised
Solution Approach 1:
The patent integrates the stroke extension function directly into the hydraulic block structure by forming a projection that extends the power cylinder bore. This merges the bushing's stroke extension function with the block's structural support function, eliminating the separate protruding bushing component and improving mechanical integrity while maintaining extended piston stroke capability.
Solution Approach 2:
The projection of the hydraulic block serves multiple functions: it extends the power cylinder bore for increased piston stroke, provides structural support for the piston, and maintains mechanical integrity. This multi-functional design eliminates the need for a separate bushing component that would otherwise be required solely for stroke extension.
2Length of moving object
If a protruding bushing is used to extend the power piston stroke, then the piston stroke is extended, but the efficiency of brake pressure generation is compromised
Solution Approach 1:
By merging the stroke extension feature into the hydraulic block's projection structure, the patent eliminates potential leakage paths and mechanical inefficiencies associated with a separate protruding bushing. This integration improves the efficiency of brake pressure generation while maintaining the extended piston stroke necessary for adequate brake pressure development.
3Length of moving object
If the power piston is not directly accommodated in the power cylinder bore, then the piston stroke can be extended, but the mechanical fastening and hydraulic interconnection of components is compromised
Solution Approach 1:
The patent merges the stroke extension function with the mechanical fastening structure by forming a projection that is an integral part of the hydraulic block. This eliminates the need for a separate protruding bushing and ensures strong mechanical fastening through the integrated projection structure that directly supports the power piston while providing the necessary stroke extension.
4Length of moving object
If the power piston is not directly accommodated in the power cylinder bore, then the piston stroke can be extended, but the hydraulic interconnection of components is compromised
Solution Approach 1:
By integrating the stroke extension projection into the hydraulic block, the patent ensures reliable hydraulic interconnection between the power cylinder bore and the block's internal hydraulic passages. The integrated projection structure eliminates potential leakage points and maintains proper hydraulic sealing, ensuring reliable hydraulic interconnection while providing the necessary extended piston stroke.
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
Enhances the mechanical fastening and hydraulic interconnection of components, allowing for extended piston stroke and secure rotation prevention, thereby improving the efficiency and reliability of brake pressure generation and regulation in vehicle power brake systems.
Implementation Method 1
An electric motor with which the piston can be displaced in the power cylinder bore of the hydraulic block via a worm gear
Implementation Method 2
displaced in the power cylinder bore of the hydraulic block via a worm gear
Implementation Method 3
Brake pressure can be produced and/or brake fluid can be conveyed by displacing the power piston in the power cylinder bore
Data Source
AI summary
A hydraulic block for a hydraulic unit for generating brake pressure and regulating brake pressure in a hydraulic vehicle power brake system. The hydraulic block includes a projection that extends the power cylinder bore which passes transversely through the hydraulic block on a large side of the hydraulic block and a projection that extends an anti-rotation guide of a power piston of a power brake pressure generator on an opposite large side of the hydraulic block.