Two-Layer Hydraulic Unit Layout for Compact Brake Modulators
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Solution Overview
Problem
Conventional hydraulic units for electronic control brake systems suffer from unnecessary dead space, increased size and weight due to asymmetrical hydraulic circuits, and resulting cost and durability issues.
Innovation Solution
The hydraulic unit minimizes the modulator block size by arranging passages in two layers and achieves symmetry in the two hydraulic circuits, reducing pressure deviations and improving durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If passages are arranged in a single layer in the modulator block, then the structure is simple, but the modulator block size increases and dead space is generated
Solution Approach 1:
The patent applies dimensionality change by transitioning from a single-layer passage arrangement to a two-layer passage arrangement in the modulator block. This allows passages to be organized vertically across two layers, reducing the horizontal footprint and eliminating dead space while maintaining functional connectivity between hydraulic components.
2Reliability
If the two hydraulic circuits are arranged asymmetrically in the modulator block, then the arrangement is simple, but pressure deviation occurs and durability decreases
Solution Approach 1:
The patent applies asymmetry principle by deliberately designing symmetric arrangement of the two hydraulic circuits within the modulator block. Both circuits are positioned equidistantly from the centerline, with corresponding passages and components mirrored on either side, ensuring balanced hydraulic pressure distribution and eliminating pressure deviation that would arise from asymmetric configurations.
3Ease of manufacture
If the modulator block size is increased to accommodate all components, then all components can be installed, but the weight and cost increase
Solution Approach 1:
The patent applies nesting principle by efficiently packing valves, passages, and hydraulic components into a compact two-layer configuration within the modulator block. Components are arranged to maximize space utilization, with passages routed through shared walls and components positioned to minimize overall block dimensions, thereby reducing weight without compromising installation feasibility.
Data Source
AI summary
A hydraulic unit of an electronic control brake system is disclosed. The hydraulic unit of the electronic control brake system includes a modulator block having a plurality of accommodating bores in which a plurality of valves and pressure sensors coupled to a master cylinder to control braking hydraulic pressure supplied towards vehicle wheels are installed. Passages connecting between the accommodating bores are formed in the modulator block, and the passages are formed to be divided into two layers.