Fuel Cell Air Supply Control for Toxic Ambient Air
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Solution Overview
Problem
Fuel cells in vehicles are vulnerable to toxic substances in ambient air, which can reduce electric current production and operational lifetime, particularly in areas with poor air quality such as tunnels.
Innovation Solution
A vehicle fuel cell system with a control unit that monitors toxic substance levels and controls the supply of oxygen-based fluid to the cathode inlet, diluting ambient air or blocking it when toxic levels exceed a threshold, and reducing fuel cell operation if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the fuel cell receives air from the ambient environment, then the fuel cell can operate continuously, but toxic substances in the air reduce electric current production and operational lifetime
Solution Approach 1:
A buffer tank containing clean air is introduced as an intermediary between the ambient environment and the fuel cell cathode. When toxic substances are detected in the ambient air, the system switches to supply air from the buffer tank instead of directly from the environment, thereby protecting the fuel cell from harmful exposure while maintaining continuous operation
Solution Approach 2:
Clean air is pre-stored in the buffer tank before the fuel cell needs protection. This preliminary action allows the system to immediately switch to clean air supply when toxic substances are detected, without delay or interruption to fuel cell operation
2Adaptability or versatility
If the fuel cell operates in areas with poor air quality, then the vehicle can access various locations, but electric current production is reduced
Solution Approach 1:
The buffer tank acts as a mediator that decouples the fuel cell's air supply from the ambient environment. This allows the vehicle to operate in areas with poor air quality by supplying clean pre-stored air to the fuel cell, maintaining electric current production while preserving operational flexibility to access various locations
3Reliability
If a buffer tank with clean air is introduced, then the fuel cell is protected from toxic substances, but the system complexity increases
Solution Approach 1:
A buffer tank with clean air is introduced as an intermediary storage system between the ambient environment and the fuel cell cathode inlet. The control unit monitors toxic substance levels and switches the air supply source accordingly, protecting the fuel cell from toxic substances while maintaining a relatively simple system architecture
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
Protects the fuel cell from toxic substances while maintaining electric power generation, extending its operational life and optimizing performance based on ambient air quality.
Implementation Method 1
The fuel cell typically comprises an electrolyte that allows ions to move between the anode and cathode sides. At the same time, electrons flow from the anode to the cathode producing electric current.
Implementation Method 2
supplying a clean air from the tank arrangement to a cathode inlet of the fuel cell... the clean air may be used to dilute the ambient air provided into the cathode inlet
Data Source
AI summary
An auxiliary hull unit detachably mounted to a transom on a marine vessel, wherein the hull unit is mounted at least partially below the water line of the vessel and arranged to extend rearwards parallel to the rearward extension of hull sections adjacent to the hull unit. The hull unit comprises a rear hydrofoil system for the marine vessel; the rear hydrofoil system comprising at least one pair of foldable hydrofoils which are pivotable in a lateral direction relative to the hull unit, wherein each hydrofoil is controllable by at least one actuator for displacement of the at least one pair of foldable hydrofoils in the lateral direction of the hull unit between a stowed position and a deployed position. The hull unit can be provided with a propulsion unit.