Rail Hydraulic Unit Layout for Compact Motor-Pump Integration

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional hydraulic devices for rail vehicles face challenges in reducing size and accommodating additional functions due to space constraints, with the motor-pump combination requiring significant space and leading to costly design modifications and reduced component integration.

Innovation Solution

The hydraulic device rearranges the motor and pump on one side of the hydraulic connection panel, with the tank and control regions on opposite sides, allowing for direct fluid pumping and reduced space requirements, and optionally includes a support structure to attenuate vibrations and enhance stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the motor and pump are arranged on opposite sides of the hydraulic connection panel, then the hydraulic fluid paths are simplified, but the installation space increases and volume utilization decreases

Engineering Contradiction:
Improvehydraulic fluid pathsVSAvoidinstallation space
Core Design Contradiction:
Device complexityVSVolume of moving object

Solution Approach 1:

The motor and pump are merged into a common motor-pump unit positioned on one side of the hydraulic connection panel. This consolidation reduces the spatial separation between components, minimizing the installation space while maintaining efficient hydraulic fluid paths through the panel.

Inventive Principle:
Principle #5Merging (Combining)

2Volume of moving object

If the motor-pump unit is positioned to reduce installation space, then volume utilization improves, but the structural stability and vibration attenuation may be compromised

Engineering Contradiction:
Improveinstallation spaceVSAvoidstructural stability
Core Design Contradiction:
Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The hydraulic device is segmented into distinct functional regions: the motor-pump unit is positioned on one side of the hydraulic connection panel while the tank region is positioned on the opposite side. This segmentation allows compact arrangement for space efficiency while maintaining structural stability through the panel's支撑作用 and enabling vibration attenuation between the motor-pump unit and tank region.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If additional functions are accommodated in the same space, then the device versatility increases, but the space for each individual function decreases

Engineering Contradiction:
Improvedevice functionsVSAvoidspace per function
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The hydraulic connection panel serves multiple functions simultaneously: it acts as a structural support element, provides hydraulic fluid paths, and serves as a mounting surface for the motor-pump unit. This multi-functionality allows the device to accommodate additional functions within the same space without compromising the space required for each individual function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 configuration reduces installation space, enables more functions in the same space, and provides a mechanically stable design with efficient volume utilization, while minimizing the need for additional fluid lines and support structures.

Implementation Method 1

a motor with a pump for pumping the hydraulic fluid

Methodology Applied
Scientific EffectPumping: Pump

Data Source

PatentUS11085428B2Hydraulic device
Publication Date: 2021.08.10 KNORR BREMSE SYST FUR SCHIENENFAHRZEUGE GMBH
  • US11085428B2 patent drawing
  • US11085428B2 patent drawing
  • US11085428B2 patent drawing

AI summary

The invention relates to a hydraulic device for a rail vehicle including a tank region for a hydraulic fluid, a motor having a pump for pumping the hydraulic fluid, a hydraulic connection panel for providing hydraulic fluid paths and for holding hydraulic components, a control region for controlling the hydraulic components, and a housing. The tank region and the control region are arranged on opposite sides of the hydraulic connection panel. The motor is arranged together with the pump on one side of the hydraulic connection panel.