Reactant Parameters Control TRIZ Cases

Overlapping branch and main channels route oxidant and coolant through dual-stack end plates while cutting manifold space and part count.

A reusable aluminum fuel cartridge reacts with fluid to generate hydrogen on demand, enabling quiet fuel-cell power without combustion emissions.

A venturi jet pump with first and bypass ducts boosts recycled hydrogen entrainment while avoiding added packaging space.

Temperature-difference wake-up monitoring detects hydrogen tank leaks and faults without continuous power draw, helping protect battery life.

Valve switching based on estimated anode nitrogen and target power helps purge nitrogen, maintain hydrogen concentration, and stabilize fuel cell output.

A welded thermoplastic polyamide and polyphthalamide layer stack cuts residual stress and microcracking while keeping hydrogen tanks light and gas-tight.

A movable magnet filter captures iron particles in the fuel cell vent and enables clogging control with simple accumulation notification.

Pressure-based diagnosis checks whether a fuel cell integrated discharge valve is stuck closed, avoiding false shutdowns and unstable power.

Quick-connect fuel cell modules and centralized control allow replacement without shutdown, reducing downtime and grid dependence.

A controller switches recycle and single-pass hydrogen flow so fuel cells can run on 80-99.9% purity without costly purification.

A multi-outlet coolant valve switches between recycle and exhaust modes to cut heat exchanger size, coolant volume, and aircraft drag.

Charge-capacity AOS measurement helps rebalance Fe-Cr flow batteries, limiting hydrogen generation and preserving storage capacity over cycling.

A flow insert redirects and evens media supply across a fuel cell stack, reducing outer-cell flow imbalance and temperature variation.

An antioxidant-coated filter removes peroxides and hydroxyl radicals before they reach the humidifier, protecting hollow fiber membranes.

Exhaust heat drives heating and cooling cycles that release and reabsorb hydrogen in a container, enabling continuous supply with less added energy.

A controller coordinates fuel cells, batteries, and an inverter to deliver zero-emission portable power with stable output during load changes.

An external fuel plenum with aligned channels replaces internal manifolds to improve fuel uniformity, active area, and ceramic stack robustness.

A center floor layout mounts fuel cell stacks and hydrogen tanks low in the body to save space, keep vehicle height, and improve crash protection.

Captured exhaust hydrogen is stored, purified, and resupplied to fuel cell packs to cut hydrogen loss and raise power generation efficiency.

Rotor wake air supplements stack oxygen at high altitude, cutting compressor power while valves, cooling, and humidification stabilize supply.

Controlled chromium-to-iron electrolyte ratios suppress hydrogen generation while preserving Fe-Cr flow battery capacity over repeated cycles.

A pressure-driven link between oxidant supply and off-gas passages recirculates water vapor to keep the membrane wet without a humidifier.

When ambient toxins rise, stored oxygen-based fluid is fed to the cathode inlet to protect fuel cell output and operating life.

Alternating hydrogen and wet-gas flow directions evens anode and cathode activation, shortening startup and improving fuel cell output.

An adjustable tolerance compensation element bridges shaft-to-flap gaps during assembly to maintain sealing contact and reduce closed-position leakage.

A floating solid cover shields most of the electrolyte surface to limit oxygen contact and preserve energy density in redox flow batteries.

Continuous winding and pressure consolidation of thermoplastic composite tapes enables lighter, conformable hydrogen tanks with low porosity.

Oxidant gas pressure drains humidifying water before shutdown, preventing freeze expansion damage in the fuel cell stack and lines.

Oxidant-gas pressure keeps humidifying water above atmospheric pressure and drains it at shutdown to prevent freeze expansion in fuel cell stacks.

Pressure cycling and gas-liquid separation drain residual water from a fuel cell during power generation while limiting fuel gas waste.

Selective hydrogen vent paths switch by anode pressure to limit cathode pressure swings, prevent corrosion, and stabilize fuel cell output.

Coordinated air cut-off and pressure valve control maintains stack voltage during stop mode while reducing seal wear and motor-related cost.

Electrical feedback opens a hydrogen return valve to purge excess water, limiting oxygen generation and hydrogen side reactions.

A slip-stream exhaust unit separates CO2 from carbonate fuel cell exhaust, enabling reuse while cutting emissions and preserving power output.

Retrofitting haul trucks with split fuel cells, batteries, and hydrogen tanks uses existing wheel pockets and deck volume to speed cleaner deployment.

A master-slave control layout lets fuel cell subsystems be replaced and diagnosed modularly, improving scalability, fail-safety, and service efficiency.

Model-based platinum oxide control in a fuel cell balances power demand with aging reduction by adjusting potential and humidity.

Resilient peripheral sealing on a fuel cell control flap maintains gas-tight closure despite production tolerances and thermal changes.

Supporting the fuel tank and joint on the ladder frame cuts relative vibration, limiting metal fuel pipe fatigue in fuel cell vehicles.

When the water level sensor fails, drain control uses fuel supply state and reaction estimation to remove condensate while limiting hydrogen loss.

Modular roof or tailgate fuel cell housings shorten conduits, improve weight distribution, and simplify hydrogen-safe servicing in refuse vehicles.

Side-by-side cooling rooms and inward-narrowing airflow improve battery cell cooling while preserving vehicle space for other components.

Gallium-based liquid metal alloys create a liquid-zinc anode that suppresses dendrites while enabling high areal capacity and long cycle life.

Cryogenic fuel cools and condenses incoming air so liquid pumping can replace bulky compressors, cutting fuel cell weight and energy use.

Intermittent cathode exhaust gas recirculation uses moist exhaust air to stabilize humidification at high load without a separate humidifier.

Separate drain and exhaust valve control removes water and impurities independently, reducing drain valve wear in fuel cell gas recirculation.

Prioritized drawdown of a maintenance tank cuts venting, hydrogen loss, and service downtime while closing the valve at low pressure.

Controlled hydrogen blending in gas pipelines helps fuel cells deliver lower-carbon power while meeting user allocation requests and limiting emissions.

Grooved lower-casting isolators precisely position a fuel storage tank, damp vibrations, and accommodate thermal expansion in fuel cell systems.

A side-and-cross-member frame uses the fuel cell stack and auxiliary assembly as reinforcements to suppress vibration and cut module weight.