Road Paving Machine Energy Interface for Continuous Low-Emission Operation
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Solution Overview
Problem
Conventional road construction machines rely on diesel fuel, leading to fossil fuel consumption and emissions, and electrified machines face limitations in range and working time due to the heavier energy storage systems required, causing interruptions and quality issues in paving operations.
Innovation Solution
A self-propelled road construction machine with a primary drive, material hopper, and energy storage, capable of connecting to a mobile supply machine for electrical power or alternative energy sources, allowing for extended operation without interruptions and reduced emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If diesel fuel is used as energy source, then operating range and working time are sufficient, but exhaust emissions and fossil fuel consumption occur
Solution Approach 1:
The energy supply system is segmented into multiple independent energy storage units (battery packs, fuel tanks) that can be individually replaced or refilled. This allows the road construction machine to maintain continuous operation by swapping energy storage units during work, eliminating both emissions during operation and downtime for refueling
Solution Approach 2:
The system changes the energy source parameter from fossil fuels to electrical energy stored in batteries or alternative fuels like hydrogen. This substitution eliminates exhaust emissions while the multi-unit energy storage configuration maintains sufficient operating duration through sequential replacement of energy units
2Object-generated harmful factors
If accumulator is used as energy source, then exhaust emissions are reduced, but operating range and working time are significantly reduced
Solution Approach 1:
The energy storage system is divided into multiple replaceable battery packs or fuel containers. When one energy unit is depleted, another can be quickly attached to the machine, enabling continuous operation without waiting for recharging or refueling, thus maintaining long working hours with zero emissions
Solution Approach 2:
A mobile supply machine acts as an intermediary that carries additional energy storage units and materials to the road construction machine at the construction site. This mediator enables rapid replacement of depleted energy packs, extending operational duration while maintaining the benefits of electrical power
3Duration of action of moving object
If larger and heavier energy storage systems are used, then operating range is extended, but machine size and weight are drastically increased
Solution Approach 1:
Instead of using one large heavy battery, the system uses multiple smaller, lighter battery packs that can be distributed throughout the machine structure. These modular units provide the same total energy capacity with reduced peak weight and better weight distribution, improving both range and machine handling
Solution Approach 2:
The energy storage configuration becomes dynamic and adaptable - energy packs can be added or removed based on specific job requirements. This allows the machine to optimize its weight and range for different tasks, carrying only the necessary energy capacity for each operation rather than always being at maximum weight
4Duration of action of moving object
If road construction machine is stopped for battery replacement, then operating interruptions occur, but paving quality is compromised
Solution Approach 1:
Multiple energy storage units are prepared in advance and kept ready on the construction site in the mobile supply machine. When one battery pack is depleted, a pre-charged replacement is immediately available, allowing the road construction machine to swap packs during or between paving operations without stopping the paving process itself, thus maintaining continuous operation and paving quality
Solution Approach 2:
The system enables continuous paving operations by decoupling the paving process from the energy consumption process. The mobile supply machine continuously provides fresh energy packs, ensuring the road construction machine never experiences interruptions that would cause start-up marks, segregation, or temperature drops in the paving material
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
The solution extends the operating time and range of road construction machines, reduces interruptions during paving, and improves paving quality by enabling continuous operation with alternative energy sources, such as hydrogen or electric power, while minimizing exhaust emissions.
Implementation Method 1
at least one energy storage, wherein at least one interface for energy transmission and/or energy resources transmission can be connected to a mobile supply machine
Data Source
AI summary
The disclosure relates to a road construction machine in the form of a road finisher or a feeder vehicle for conveying paving material to a road finisher. The road construction machine is self-propelled and has a primary drive, a material hopper, at least one electrical load, at least one energy storage, and at least one interface which is connectable to a mobile supply machine for energy transmission or energy resources transmission.