Hybrid Forklift Power Module Compartmentalization
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Solution Overview
Problem
There is no commercially viable hybrid forklift truck that effectively combines battery power and fossil fuel energy sources, limiting operational efficiency and flexibility in the forklift truck industry.
Innovation Solution
A hybrid forklift truck design incorporating a power module with an energy storage compartment, a generator compartment, and a fuel tank compartment, along with a control system that utilizes a DC electric generator and an internal combustion engine, allowing for efficient power distribution between stored electrical energy and fossil fuel energy, while minimizing space and weight through strategic compartmentalization and component placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a hybrid power module combining battery and internal combustion engine is installed in the forklift truck, then the operational efficiency and energy flexibility are improved, but the device complexity and space requirements increase
Solution Approach 1:
The power module is segmented into distinct functional compartments: an energy storage compartment for the battery, a generator compartment for the DC electric generator and internal combustion engine, and a fuel tank compartment. This segmentation allows each component to be optimized independently while managing complexity through modular organization.
Solution Approach 2:
The power module serves multiple functions: it provides electrical power through the battery, generates electrical power through the DC electric generator, produces mechanical power through the internal combustion engine, and stores fuel. This multi-functionality improves operational efficiency by allowing the system to operate in different modes (electric-only, hybrid, fuel-only) depending on energy availability and operational requirements.
2Adaptability or versatility
If a hybrid power module with multiple compartments is installed in the forklift truck, then the energy flexibility is improved, but the volume and horizontal profile increase
Solution Approach 1:
The power module utilizes vertical stacking of components to minimize horizontal footprint. The internal combustion engine maintains a narrow horizontal profile through vertical stacking of the filter system and exhaust system above or below the inline engine block. The generator compartment is positioned toward the front and the energy storage compartment toward the rear, optimizing spatial arrangement in three dimensions rather than expanding horizontally.
Solution Approach 2:
The power module components are nested within a compact housing structure. The DC electric generator and internal combustion engine are received within the generator compartment, which is itself received within the power supply compartment of the forklift truck. The fuel tank is positioned adjacent to the generator compartment, creating a nested arrangement that maximizes space utilization.
3Power
If the internal combustion engine and generator are positioned in the generator compartment, then the power generation function is improved, but the noise and heat generation increase
Solution Approach 1:
The internal combustion engine and generator are extracted into a separate generator compartment, isolating the noise and heat sources from the operator compartment. This spatial separation reduces the harmful effects of noise and heat in the main forklift operating area while maintaining the power generation function.
Solution Approach 2:
A grating is positioned between the generator compartment and the fuel tank compartment, serving as an intermediary structure that allows for cooling airflow while providing structural separation. The grating enables thermal management by facilitating air circulation around the internal combustion engine and generator, thereby reducing heat buildup in the confined compartment.
4Stability of the object's composition
If the energy storage device is positioned toward the rear of the truck, then the counterweight balance is improved, but the access to power module components becomes more difficult
Solution Approach 1:
The power module is segmented into accessible compartments with dedicated access points. The generator compartment has an opening at the front for accessing the internal combustion engine and generator components, while the energy storage compartment is positioned toward the rear but remains accessible through the segmented compartment structure. This segmentation allows the energy storage device to be positioned for optimal counterweight balance while maintaining ease of access to all components through their respective access points.
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 hybrid forklift truck achieves efficient and effective power management, reducing space requirements and maintaining a smaller profile, enabling efficient operation and easy refueling, while providing a balanced counterweight and noise reduction through sound insulation.
Implementation Method 1
energy generated from the combustion of fossil fuel sources
Implementation Method 2
DC electric generator and a cooperating internal combustion engine are received in the generator compartment
Implementation Method 3
an air pathway is provided for cooling the internal combustion engine. The air pathway extends from the cutdown profile of the sidewall through the grating across the internal combustion engine, through the radiator and then through the sidewall opening
Implementation Method 4
an energy storage device received in the energy storage compartment
Data Source
AI summary
A hybrid forklift truck includes a truck assembly having a lift section, a drive section and a power supply compartment. A power module is received in the power supply compartment. The power module includes an energy storage compartment, a generator compartment, a fuel tank compartment and an energy storage device received in the energy storage compartment. A DC electric generator and cooperating internal combustion engine are received in the generator compartment. Further, the control system is provided for operating a forklift truck including the lift section and the drive section.