Machines/Engines TRIZ Cases

Static friction between biased surfaces holds the movable part after SMA wires de-energize, reducing power use and improving position stability.

Fuel vapor and acceleration-driven movement can interrupt delivery; a baffled reservoir and secondary pump help maintain liquid fuel flow.

A CO sensor-controlled breaker interrupts engine power above a set limit, shutting down the generator without modifying its control unit.

Electromagnetic reflections measure barrel level and alcohol content externally, avoiding contamination from inserted tools and repeated manual checks.

Corrosion makes fuel pump lock ring replacement complex; self-tapping fasteners and quick connects simplify service without tank removal.

Rate-of-change distributions help a radar level gauge distinguish disturbed liquid echoes from fixed structures for reliable filling-level measurement.

Manual fluid checks can miss levels or create safety risks; dual capacitance sensors automate measurement and flag agitation or sensor failures.

Rotating plates open and close intake and exhaust ports, reducing valve-train weight, complexity, and loads at high engine speeds.

A multicolumn electrode layout groups shared connections to locate liquid interfaces accurately while reducing the conducting lines needed for high-resolution sensing.

A shared telecentric lens serves LIDAR transmission and reception, while focal-plane aperture filtering supports reliable distance detection.

Lightning-damaged blade mesh is repaired by overlapping a second mesh with conductive adhesive, avoiding the high temperatures of soldering.

Four parallel shape memory alloy actuators adjust a flexible lens through nested gears, enabling compact, user-specific focus control.

A kinked pre-bend profile modifies blade torsion to improve edgewise damping, reduce vibration buildup, and maintain tower clearance.

Replace complex, costly level sensors with radiation-source and detector measurements through a partially transparent container.

A Venturi structure generates negative pressure to remove container air during liquid filling, helping limit overflow and operator dependence.

A plunger-to-housing fuel-tight seal and guided bearing assembly support precise axial motion while reducing leakage in fuel injection.

A composite outer case with a hard ballistic liner helps contain fan blade fragments without the weight of a thick metallic case.

Multiple blade surfaces redirect water flow through repeated deflections, improving kinetic-energy transfer and electrical generation in the wheel.

Curved inlet-valve guidance creates tangential swirl, helping fill the cylinder at lower loads and reduce pumping losses.

An aluminium oxide layer at least 10 μm thick protects housing surfaces from corrosion and nonvolatile organic deposits.

Uniform cavity overpressure improves resin infusion, limits pooling, and supports larger wind turbine rotor blades.

Guide plates direct incoming air into a hollow rotor structure, limiting vertical escape and improving wind-to-electric conversion efficiency.

Kelp-grown collection units capture wave motion on a buoyant anchored structure, reducing mechanical maintenance while generating electricity.

Two offset wave collection tubes and check valves convert alternating pressure into steady airflow for turbine electricity.

Trailing-edge rotor duct chamfers and sealed flow paths help limit cavitation, noise, vibration, and fluid mixing in pressure exchange.

An umbrella-style valve uses a moveable partition to stabilize crankcase pressure without springs that wear and require replacement.

Multiple UWB anchors locate a floating RF device by time-of-flight to measure fluid level without submerged pressure sensors.

An inflatable sleeve clamps around a wind turbine blade to create temporary crew support without permanent blade anchor points.