Active Chassis Pump Layout for Vehicle Axis Space and Mass Balance
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Solution Overview
Problem
The limited design space and off-center center of mass issues in the vehicle axis area due to the arrangement of the engine pump unit and other devices in motor vehicles, leading to inefficient use of space and stability concerns.
Innovation Solution
The engine pump unit and other devices, such as the steering assist device, are arranged off-center in the vehicle transverse direction, with the engine pump unit positioned next to the steering assist device, optimizing space utilization and centralizing the center of mass in the vehicle transverse direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the engine pump unit is arranged in the area of the vehicle axis, then the damping behavior can be adjusted, but the design space is limited and the center of mass becomes off-center
Solution Approach 1:
The engine pump unit is positioned in the vehicle transverse direction rather than being constrained to the longitudinal vehicle axis area. This dimensional shift allows the pump unit to be arranged in the available transverse space between the vehicle wheels, effectively utilizing previously underused design space while maintaining its hydraulic connection function to the shock dampers
2Adaptability or versatility
If the engine pump unit is arranged in the area of the vehicle axis, then the damping behavior can be adjusted, but the center of mass becomes off-center
Solution Approach 1:
The engine pump unit is deliberately positioned asymmetrically in the vehicle transverse direction, specifically on one side between the vehicle wheels. This asymmetric arrangement allows optimization of space utilization while the overall vehicle component layout is designed to balance the center of mass, preventing off-center mass distribution that would compromise vehicle stability
3Area of stationary object
If the engine pump unit is arranged next to other devices in the vehicle transverse direction, then space is optimized, but accessibility for maintenance may be reduced
Solution Approach 1:
The engine pump unit is positioned adjacent to but spatially separated from the steering assist device in the vehicle transverse direction. This segmented arrangement allows both devices to be packed efficiently into the available space while maintaining separate access paths, enabling maintenance personnel to reach either component without requiring complete disassembly of the entire assembly
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 arrangement optimizes the use of design space and centralizes the center of mass, enhancing vehicle stability and accessibility for maintenance.
Implementation Method 1
a hydraulic variation caused by the engine pump unit can be used to adjust the damping behavior of the shock dampers
Data Source
AI summary
A motor vehicle includes two vehicle wheels, which are arranged on a common vehicle axis, and two single wheel suspension devices of an active chassis, via which the vehicle wheels are each connected to an engine vehicle body. The single wheel suspension devices each have a shock damper, which can be fluidically connected to an engine pump unit to vary the damping behavior. The engine pump unit is arranged in the area of the common vehicle axis. The engine pump unit and a further device arranged in the area of the vehicle axis are arranged off-center in the vehicle transverse direction. The engine pump unit is arranged spaced apart from the further device in the vehicle transverse direction.