Common ECU for Vehicle Active Chassis Motor-Pump Control
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Solution Overview
Problem
Active chassis systems for vehicles face challenges in being cost-effective and space-efficient due to the need for separate motor-pump units for each shock absorber, leading to increased installation space requirements and complexity in electrical connections.
Innovation Solution
A device comprising two hydraulic pumps and electric motors, each with a common electronic unit that controls both, reducing the number of components and installation space by sharing control electronics, and allowing for efficient energy recovery and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate motor-pump units are provided for each shock absorber, then each shock absorber can be controlled independently, but the installation space and device complexity increase
Solution Approach 1:
The patent combines multiple separate control units into a single common electronic control unit that controls multiple electric motors. This merging reduces the number of separate components, simplifies electrical cabling, and reduces installation space while maintaining the ability to independently control each motor-pump unit through the centralized controller.
Solution Approach 2:
The common electronic control unit is designed to perform multiple functions by controlling different electric motors for different shock absorbers. This universal controller can adapt to control various motors and pumps, reducing the need for dedicated control units for each component while maintaining independent control capabilities.
2Reliability
If separate control units are provided for each motor-pump unit, then each unit can be controlled precisely, but the number of components and costs increase
Solution Approach 1:
Multiple separate control units are merged into a single common electronic control unit that maintains precise control over each motor-pump unit. The controller includes multiple output channels that can independently regulate each motor, achieving the same control precision as separate units would provide while reducing component count and overall system complexity.
3Ease of manufacture
If motor-pump units are mounted close to shock absorbers, then hydraulic connections are simplified, but installation space availability is reduced
Solution Approach 1:
The system is segmented into modular motor-pump units that can be independently positioned. This segmentation allows the control unit to be located remotely from the shock absorbers, utilizing available space in the vehicle architecture while maintaining simplified hydraulic connections through the modular design of individual pump units.
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
This solution reduces installation space, costs, and mounting effort while enabling efficient energy recovery and distribution, allowing for a more compact and cost-effective active chassis system.
Implementation Method 1
a first electric motor (12) and a common electronic unit (30) for controlling both electric motors (12, 22) respectively driving the hydraulic pumps (11, 21)
Data Source
AI summary
A device for supplying hydraulic energy in a chassis system of a vehicle includes a first hydraulic pump and a first electric motor for driving the first hydraulic pump, a second hydraulic pump and a second electric motor for driving the second hydraulic pump, and a common electronic unit which is arranged to control the first and the second electric motor, wherein the two electric motors and the two pumps are preferably designed to be identical in structure and/or respectively form first and second motor-pump groups.