Modular Track Maintenance Machine for Peak Power Efficiency
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Solution Overview
Problem
Existing track maintenance machines are inefficient due to idle times caused by mechanically or hydraulically powered working tools, which require peak performance only briefly during specific tasks, leading to suboptimal energy usage and increased weight for transport.
Innovation Solution
A machine design featuring a detachable energy module with an electrical energy store and a brushless electric motor, where the energy module includes a combustion engine coupled to a generator for charging the energy store, allowing for efficient peak performance coverage and separate transport of modules, with a super capacitor for high output density and quick energy cycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a combustion engine is used to power a working tool directly, then the machine can deliver peak performance when needed, but the engine must be oversized and run at low efficiency during idle periods
Solution Approach 1:
The power delivery system is segmented into two independent components: a combustion engine for base power generation and an electrical energy store for peak power delivery. This segmentation allows each component to operate in its optimal range - the engine at steady-state efficiency and the energy store during transient high-demand periods.
Solution Approach 2:
An electrical energy store acts as an intermediary between the combustion engine and the working tool. It absorbs excess energy when the engine produces more than needed and releases energy during peak demand, decoupling the engine's continuous operation from the tool's intermittent high-power requirements.
2Stability of the object's composition
If the machine is designed as a single integrated unit, then structural stability is improved, but transport between track construction sites becomes more difficult
Solution Approach 1:
The machine is divided into separable modules - a work module and an energy module - that can be detached from each other. This allows the lightweight work module to be transported easily between sites while the energy module can be left at the current location or transported separately.
Solution Approach 2:
The mechanical connection between modules is designed to be dynamically changeable - firmly connected during operation for structural stability, and easily detachable for transport. The coupling mechanism transitions between a locked operational state and an unlocked transport state.
3Duration of action of moving object
If mechanical or hydraulic drives are used, then continuous power delivery is achieved, but idle times occur when peak performance is not required
Solution Approach 1:
The energy store operates in periodic cycles of charging and discharging. During low-demand periods, it charges from the combustion engine; during peak-demand periods, it discharges to supplement engine power. This periodic energy exchange eliminates idle times and keeps the system continuously productive.
Solution Approach 2:
The power delivery system uses a composite energy architecture combining chemical energy (combustion engine) with electrical energy storage. This composite approach allows the system to maintain continuous operation while delivering peak performance only when needed, eliminating the idle times inherent in purely mechanical or hydraulic systems.
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 idle times, optimizes energy usage, and enhances ergonomics by allowing separate transport of modules, achieving high efficiency and reduced weight, while maintaining performance during recurring load peaks with minimal noise and fuel consumption.
Implementation Method 1
the electrical energy store comprises a super capacitor. With this, a high output density can be achieved in a small space and with small weight. In addition, a super capacitor allows quick unloading and a sufficient number of loading- and unloading cycles
Implementation Method 2
the energy module comprises a combustion engine coupled to a generator
Implementation Method 3
the energy module comprises a combustion engine coupled to a generator, and that the generator is connected to a charging device for charging the electrical energy store
Data Source
AI summary
A machine for track maintenance is manually displaceable on a track. The machine has a work module with a handle, a working tool powered by a drive and a machine frame configured to be guided on a rail of the track. The work module is detachably connected to an energy module and the energy module has an electrical energy store and output contacts. The output contacts are detachably connected to input contacts of the work module. The work module has as the drive an electric motor supplied with electrical energy from the energy store. This solution results in a high degree of overall efficiency because the energy available in the energy store serves for the largest part for covering performance peaks.