Integrated Axle Brake Modulators for Simpler Wheel ABS Control
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Solution Overview
Problem
Existing electrically controlled pneumatic brake systems for vehicles are costly and complex, requiring multiple intelligent components and extensive cabling, making them difficult to scale and integrate into various vehicle configurations without significant additional expenditure.
Innovation Solution
The integration of single-channel axle modulators with ABS valves downstream, forming structural units that include a central electronic control unit, reduces complexity and cost by using readily available ABS valves and simplifying cabling, allowing for easier expansion to multiple axles and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple intelligent components and extensive cabling are used in electronically controlled pneumatic brake systems, then reliable individual-wheel braking control is achieved, but system complexity and cost increase significantly
Solution Approach 1:
The patent combines the electronic control unit with the pneumatic modulator into a single integrated component. This merging eliminates the need for separate electronic components and extensive cabling while maintaining the ability to control braking pressure individually at each wheel, thus reducing system complexity without sacrificing reliability
Solution Approach 2:
The integrated control unit performs multiple functions: it serves as both the electronic control unit for ABS modulation and the pneumatic modulator for brake pressure control. This multi-functionality reduces the number of components needed while maintaining individual-wheel braking control capability
2Reliability
If multiple intelligent components are used to ensure reliable braking control, then braking performance is improved, but manufacturing cost increases
Solution Approach 1:
By merging the electronic control unit and pneumatic modulator into one component, the patent reduces the total number of parts that need to be manufactured, assembled, and tested. This integration lowers manufacturing costs while maintaining reliable braking control through the combined functionality of the integrated unit
3Reliability
If extensive cabling is used to connect multiple intelligent components, then reliable signal transmission is achieved, but installation complexity and space requirements increase
Solution Approach 1:
The integration of the electronic control unit with the pneumatic modulator eliminates the need for separate cabling connections between these components. Signals are transmitted internally within the integrated unit, reducing cabling complexity and installation space while maintaining reliable signal transmission for braking control
4Reliability
If multiple separate components are used in the brake system, then functional redundancy is achieved, but construction space and installation costs increase
Solution Approach 1:
The patent integrates the electronic control unit and pneumatic modulator into a single compact component, reducing the construction space required while maintaining functional redundancy through the integrated design. The combined unit preserves the necessary backup and fail-safe mechanisms without requiring separate physical components that would occupy additional space
Data Source
AI summary
The disclosure relates to an electronically controlled pneumatic brake system for a utility vehicle, including a front-axle brake circuit with a single-channel front-axle modulator for the control of first and second front-axle service brake actuators, wherein first and second front-axle ABS valves are provided; a rear-axle brake circuit with a single-channel rear-axle modulator for the control of first and second rear-axle service brake actuators, wherein first and second rear-axle ABS valves are provided; a braking-value sensor which has an electrical terminal for the provision of an electronic brake demand signal; and a central electronic control unit which receives the electronic brake demand signal and controls the front-axle and rear-axle modulators. Here, it is provided that the central electronic control unit is formed as a structural unit with the rear-axle modulator and/or the front-axle modulator.