Modular Fuel Cell Containment for Refuse Vehicle Servicing
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Solution Overview
Problem
Existing refuse vehicles face challenges in efficiently integrating and servicing fuel cell systems, which can complicate weight distribution and require complex teardowns for component replacement, especially when hydrogen fuel is used due to the risk of leaks and explosions.
Innovation Solution
A modular fuel cell system architecture is integrated into refuse vehicles, where primary components like fuel storage, fuel cell, and energy storage are housed in subsystem modules, often on the vehicle's roof or tailgate, with separate conduits and partitions to minimize risks and simplify servicing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If fuel cell system components are integrated into the vehicle body, then weight distribution improves, but device complexity increases due to integration requirements
Solution Approach 1:
The fuel cell system is divided into separate subsystem modules (fuel storage module, fuel cell module, energy storage module) that can be independently installed and serviced. This segmentation allows weight distribution optimization without requiring complex integration of all components into a single unit, as each module can be positioned independently to achieve desired weight balance.
2Ease of repair
If fuel cell components are accessible for servicing, then ease of repair improves, but vehicle structure complexity increases
Solution Approach 1:
Components are organized into discrete subsystem modules that can be independently accessed and removed. The fuel storage module, fuel cell module, and energy storage module are separate entities that can be serviced without requiring teardown of the entire vehicle structure, maintaining simplicity while enabling easy repair.
Solution Approach 2:
Critical fuel cell components are extracted as removable subsystem modules that can be taken out for servicing without disassembling the vehicle body. The modules connect to the vehicle through standardized interfaces, allowing quick removal and replacement while maintaining vehicle structural integrity.
3Use of energy by moving object
If hydrogen fuel storage is implemented, then energy efficiency improves, but safety risks increase due to leak and explosion hazards
Solution Approach 1:
The fuel storage module is extracted as a separate, isolated subsystem with dedicated containment structures. This separation isolates the hydrogen storage from other vehicle components, reducing the potential impact of leaks or explosions on the overall vehicle system while maintaining energy efficiency.
Solution Approach 2:
The fuel storage module incorporates specialized local features including sealed containment structures, leak detection sensors, and ventilation pathways specifically designed for hydrogen safety. These localized safety features are concentrated at the fuel storage location rather than distributed throughout the vehicle, maintaining energy efficiency while addressing safety risks.
4Ease of manufacture
If subsystem modules are used for fuel cell components, then ease of manufacture improves, but device complexity increases due to modular architecture
Solution Approach 1:
The fuel cell system is segmented into standardized subsystem modules (fuel storage, fuel cell, energy storage) that can be manufactured independently and then assembled into the vehicle. This segmentation simplifies manufacturing by allowing parallel production of modules while the standardized interfaces reduce the complexity of integrating them into the final system.
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 reduces the length of conduits, improves weight distribution, enhances lift capacity, and simplifies servicing by allowing modular replacement of components, thereby enhancing safety and operational efficiency.
Implementation Method 1
The fuel cell system includes a plurality of primary components including a fuel storage volume, a fuel cell, an energy storage device, and a motor
Data Source
AI summary
A refuse vehicle includes a chassis, a body coupled to the chassis and including a refuse container for receiving and storing refuse therein, and a fuel cell system coupled to at least one of the chassis or the body. The fuel cell system includes a plurality of primary components: a fuel storage volume, a fuel cell, an energy storage device, and a motor. The fuel cell system further includes a subsystem module including a housing for coupling at least two of the primary components to the chassis or the body.