Fuel Cell Injector Dynamics for Pressure Stability and Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fuel cell systems face challenges in quickly adjusting fuel gas supply pressure in response to operating conditions and often produce harsh operation sounds, which can be distracting for operators.
Innovation Solution
A fuel cell system equipped with an injector in the gas supply channel, controlled by a control means that adjusts the gas state based on the fuel cell's operation state, temperature, and associated device states to improve responsiveness and minimize harsh noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a pressure adjustment valve (regulator) is used to reduce supply pressure to a constant value, then pressure stability is improved, but response speed deteriorates and precise pressure adjustment in multiple stages becomes difficult
Solution Approach 1:
The patent replaces the static pressure adjustment valve with a dynamic injector system controlled by a control unit. The injector can rapidly adjust gas supply pressure in multiple stages by varying injection timing and duration, achieving both pressure stability and fast response. The control unit dynamically modifies injection parameters based on operating conditions, enabling precise multi-stage pressure adjustment that a conventional regulator cannot achieve.
2Object-affected harmful factors
If the fuel cell system operates with low noise level, then operator comfort is improved, but harsh operation sounds become more noticeable
Solution Approach 1:
The patent employs periodic injection action where the injector operates in controlled cycles rather than continuously. By timing the injection periods and durations appropriately, the system generates rhythmic gas flow that reduces harsh transient sounds. The periodic operation allows the control unit to synchronize injection events with optimal timing, minimizing abrupt pressure changes and associated harsh noises while maintaining overall low noise levels through controlled operation cycles.
Data Source
AI summary
The present invention is a fuel cell system including a fuel cell, an injector which is provided in a hydrogen supply channel of the fuel cell and which adjusts a gas state of an upstream side of the hydrogen supply channel to supply a gas toward a downstream side, and a control device which drives and controls the injector. The control device controls an operation of the injector based on a driving state of an associated device including the fuel cell system 1.