Engine Fuctions TRIZ Cases

See how integrating gas turbine cycles with supercritical liquid air vaporization and flue gas

See how segmented evaporation sites with wetting control prevent boiling and dry-out in two-pha

See how segmented heat exchangers with varying efficiencies prevent condenser icing during tran

See how a thermal bus with vapour compression raises ancillary waste heat temperature to improv

See how a throttling valve upstream of the anti-surge loop reduces compressor startup load by l

See how a nested cluster assembly with guide hooks secures the controller inside the case, prev

See how integrating condenser and evaporator coils into the bypass duct eliminates fan case hea

See how a vortex tube separates compressed gas into hot and cold flows, and a switch arrangemen

See how staged motor alignment and speed control prevent sensorless pump startup failures, redu

Temperature-based pressure estimation lets a dynamic compressor set a safe startup speed when a check valve blocks direct pressure sensing.

See how a preferential vacuum relief system allows air instead of oil to be drawn back into eva

See how a mesh-structured porous coating with controlled opening size prevents fluid recirculat

See how segmented louver blades with connection interfaces adapt to various nacelle frame sizes

See how selective operation of air and wet surface cooling sub-systems based on temperature sen

See how monitoring rotary shaft deceleration time detects air bearing degradation in aircraft A

See how temperature sensors in evaporator and condenser paths estimate compressor pressure rati

See how a guided horizontal-insertion and vertical-rotation cluster assembly prevents insect in

A closed-loop thermal bus and heat exchanger handle sub-idle and post-shutdown heat loads without overheating fuel or power electronics.

See how adaptive speed control uses motor current-speed line calculation to optimize free-flow

See how a throttling valve and recycle valve configuration reduces compressor start-up loads by

See how two pressure sensors replace complex flow measurement apparatus to control fan speed ba

High-temperature, low-oxygen flue gas from stink gas burning supports waste incineration, reducing NOx, coking, and energy use.

A heat exchanger links two nacelle cooling circuits so existing wind turbines gain higher heat removal capacity without redesign.

See how independent intercoolers with variable-speed fans and temperature sensors optimize cool

See how segmented motive nozzle and diffuser inserts optimize refrigerant flow and pressure rec

See how radial tabs and fixture slots distribute torque across multiple engagement points to en

See how coupling a waste heat boiler, turbine, and compressor converts low-grade engine heat in

See how a lighter-than-air cylindrical structure uses hydrogen or helium buoyancy to lift humid

See how a modular motive nozzle insert with control needle enables dynamic throat area adjustme

See how a segmented ejector with removable motive nozzle insert and shiftable control needle en

See how a two-phase thermosiphon loop eliminates pumps and fans in wind turbine cooling, using

See how a nozzle needle adjusts turbine flow cross-section at low rates to maintain hot-cold wa

Compressed-air recuperation followed by ambient-air heat rejection cools sCO2 in stages for deeper gas turbine heat recovery.

See how active noise cancellation in ventilation ducts suppresses low-frequency generator noise

See how a supercritical CO2 power generation cycle replaces conventional air compression to red

Overlapping root and tip frames support wind turbine blades at stronger sections, shortening support spans for regulation-compliant transport.

See how a bladeless boundary layer turbine recovers pressure energy in heat pumps without erosi

See how a preferential vacuum relief valve allows air instead of oil to be drawn back into evac

See how pre-engineered chiller and pump modules with perimeter walls reduce on-site engineering

See how integrated heat exchanger loops with compressor-expander cycles cool batteries and moto

See how tip-to-root blade orientation and segmented frame positioning reduce transport distance

See how stackable root and tip frames arrange blades in opposite directions, supporting stronge

Angled tower-mounted panels use transverse natural airflow to cool turbine units without fans, improving heat exchange and reliability.

Stepped fasteners and floating lugs maintain a control gap, preventing crimping and thermal stress damage in gas turbine components.

Thermally conductive shape-memory fins deploy at a transition temperature to boost convection and cool hot walls without complex piping.

Inclined coolant inlets, outlets, and throttle devices manage annular ring-space flow to improve cooling, lubrication, and wear control.

Reversing cooling flow through the rotor-stator air gap evens heat distribution, cuts hotspots, and extends active element life.

Voltage-forming wind turbines establish farm network voltage so other turbines can synchronize and restart after grid voltage dips.

An axial-flux rotary machine in the compressor boosts power generation while cooling permanent magnets to improve reliability and lifespan.

Decoupled transport frames and lateral supports let wind turbine nacelles be loaded without large cranes, cutting handling time and cost.

Flexible thermal links carry cryogenic gas cooling to rotating HTS magnets, improving uniformity and reducing thermal stress in wind generators.

Electric motors and a superposition gearbox rebalance turbofan spool loads for faster power response, higher efficiency, and smoother starts.

Immersed battery storage inside a vertical offshore pillar enables direct vessel power supply while reducing mainland transmission and treatment losses.

Mounting the rotor lock on the drive-end stator plate handles higher torque loads while reducing brake disc size and machining cost.

Controlled drainage through a loosened ring and collection ring resets the piston quickly, enabling stable water hammer power cycles.

Dual blade locking and reversal capture energy from changing or low-speed fluid flows while reducing startup limits of unidirectional turbines.

Tests wind turbine pitch or yaw drive functionality by discharging stored energy to a braking resistor without grid disconnection or wind-dependent errors.

Controlled discharge to a braking resistor tests wind turbine pitch or yaw drive storage accurately without disconnecting from the grid.

Rotating contact elements and planetary gearing transfer tire deformation energy with less friction, less heat, and easier tire changes.

A rotor-mounted sensor tracks air gap and circumferential position during rotation to speed stator roundness measurement and alignment.

Selective magnetic gear engagement lets reciprocating generators match wind speed, widening turbine operation while reducing gearbox wear.

A shared high-side switch combines solenoid and braking paths to cut board area, reduce parts, and improve current fault monitoring.

Vertical placement of oil auxiliary devices below electric terminals prevents oil contamination while maintaining bearing lubrication and cooling.

A unitary molded mat integrates flow channels, edge manifolds, and pressure storage to capture vehicle loads and convert them into electrical energy.

Adjustable saddles, keys, and flange supports secure wind turbine tower sections on railcars while accommodating varying lengths and circumferences.

Exhaust heat is routed through outlet guide vane fluid passages to preheat fuel and cool electrical components in a gas turbine engine.

A nested secondary containment shell and magnetic coupling isolate hazardous pump fluids, contain leaks, and avoid seal-related leakage.

Targeted drain openings and lubricant passages improve IDG governor sleeve lubrication, reducing wear and extending component service life.

Bidirectional liquid flow between side and central stator ports shortens cooling paths and improves heat transfer in wind turbine generators.

A phase-change heat pipe cools turbine engine bearings and electric machines without bleed air, preserving efficiency in compact layouts.

Parallel cooling branches with pressure-based valve switching keep motor heat dissipation running when one branch fails, improving reliability.

A bypass routes first-stage compressed air around the second compressor to build turbine startup pressure and reduce wear and over-revving.

Direct sensing at the hollow shaft outlet lets the ECU track oil temperature more accurately while keeping the electric pump compact.

Shielded electromagnetic links and wide-bandgap sensors replace turbine wiring, cutting interconnect weight while preserving high-temperature communication.

Automatic blade pitch and asymmetrical blades help a vertical axis turbine capture wave and current energy in shallow water with fewer parts.

A circumferential heat pipe cools turbine components without bleed air, preserving engine efficiency while simplifying compact internal layouts.

Releasable base, side, and top supports let one frame fit different wind turbine components while enabling compact vertical stacking.

Independent power sources feed dual starter-generator windings to cut aircraft engine restart time and maintain availability in degraded modes.

Internal oil spray cools generator housing seals in high-temperature environments, keeping elastomeric seals below their temperature limit.

Separate converters and power sources drive two starter-generator windings to speed aircraft engine start while maintaining availability during faults.

A root-end element with distributed attachment points stabilizes and rotates heavy wind turbine blades for safer, more flexible post-moulding handling.

Mechanical torque transfer moves marine hydrokinetic energy from a submerged rotor to remote generation with lower losses and less environmental impact.

A modular siphon-fed water transport and turbine layout generates dam-side power in low-head sites without contacting or altering the dam.

Lubricant injection, passage, and drain openings improve oil flow at the rotating sleeve interface, reducing wear and extending IDG governor life.

Circular horizontal water flow drives a large-diameter hydro rotor to raise torque and power output in low-head, high-flow rivers.

A nested magnetic-drive containment layout adds sealed non-metallic barriers to isolate hazardous fluids and prevent leaks from shell or seal failure.

Modified estuary channels, turbines, and flywheels smooth tidal, wave, and wind lulls to maintain steadier power generation and storage.

Warm engine lubrication fluid is circulated to the battery and motor to keep hybrid aircraft propulsion components above cold-start temperature limits.

A superposition gearbox splits accessory drive load across high- and low-speed spools to cut parasitic drag and maintain accessory operation.

Waste radiant heat from gas turbine combustor and turbine sections is converted to electricity using TPV cells with integrated heat-sink airflow cooling.

ISO-containerized compressed-air storage uses stacked vessels and heat exchange to speed transport, setup, and off-grid power deployment.

A hermetically sealed common-shaft turboexpander-generator uses magnetic bearings to prevent fluid leakage, cut footprint, and avoid lubrication.

An integrated separator chamber splits air and liquid water inside the turbine housing to limit surging, bearing overload, and component wear.

Different axial-length stator teeth let one radial generator supply FADEC and ignitors at matched power levels while cutting regulator weight.

A dual internal cooling circuit uses heat exchangers to control stator and rotor heat, improving generator efficiency and component life.

A residual anti-corrosion layer restores gas turbine component dimensions while blocking galvanic corrosion and high-cycle fatigue.

A bottom scavenge port and tuned gutter volume improve lubricant removal, reduce gearbox heat, and sustain lubrication during windmilling.

A movable fireproof seal and shield let a firewall pipe traverse accommodate axial motion and vibration while preventing fire spread.

A removable overrunning clutch cartridge inside the accessory gearbox cuts ATS weight and complexity while speeding aircraft starter maintenance.

Integrated covers and end flex zones cut gearbox bearing misalignment, simplify assembly, and keep oil film thickness stable.

Centrifugal oil collection through a sized gearbox gutter removes excess lubricant, limiting buildup, windage loss, and heat.

Adjustable arms and actuators apply uniform force to flatback inserts, reducing paste voids and improving wind blade bond integrity.

Mapped cooling hole coordinates guide laser re-drilling after recoating distortion, restoring OEM airflow geometry without damaging existing holes.

External plain bearings on satellite-carrier collars free internal space, cutting aircraft gearbox mass while supporting heavy loads.

Circumferential locking tabs and a retaining feature let aircraft engine bolts reach target torque without precise head alignment.

A curved discharge channel redirects lubricating oil outward to prevent fallback on rotating gearbox parts and improve recovery efficiency.

FAST/SPS diffusion bonding keeps fin-to-sheet joints intact during curvature forming, enabling conformal heat exchangers with lower pressure drop.

Internal annular oil channels feed lubricant outward to flexible spline teeth, maintaining lubrication at high speed and reducing wear.

A radially expanded sleeve prestresses material around a hole to resist ovalization, cut peak loads, and avoid added stiffening weight.

A single oil pocket in the non-load-bearing zone preserves bearing pressure distribution while simplifying oil return, cooling, and impurity discharge.

An auxiliary tank and pump keep the aircraft engine reducer lubricated during fan windmilling, preventing gear damage and extending service life.

A persuader drives lubricant mist onto gas turbine bearings, replacing pumps and plumbing to cut lubrication weight, cost, and complexity.

Sensor feedback varies the pressure relief valve opening to prevent lubricant reservoir overpressurization across changing aircraft engine conditions.

A superposition gearbox splits accessory drive load across high- and low-speed spools to avoid single-spool power draw and efficiency loss.

Curved and inclined gutter walls redirect centrifuged gearbox oil into a drainage cavity, limiting bounce-back and return onto rotating parts.

Selectable couplings, brakes, and lock devices let one aircraft geartrain shift power between propulsor rotors for horizontal thrust and vertical lift.

Elastic housing mounts and elastomers absorb drivetrain vibration, reducing relative movement, component loads, and wear in wind turbines.

Pocketed flange geometry creates a perpendicular fastening surface on curved parts, improving shaft attachment durability and reducing aerodynamic interference.

A raised auxiliary chamber retains oil above the vent during negative-g flight, helping the pump re-prime quickly and restore engine lubrication.

A two-stage manual vent delivers small then larger air volumes to slow a turbo pump faster while reducing rotor instability and bearing wear.

Hydraulic braking stops windmilling fan rotation, maintaining gearbox lubrication and avoiding added auxiliary lubrication weight and complexity.

Triple-toothed planet gears deliver two output speeds from one turbine input while cutting turbomachine reducer size, mass, and complexity.

A rotating gutter and static baffle capture oil expelled from a turbine fan drive gear carrier and recirculate it to improve lubrication efficiency.

Coaxial high- and low-speed tower shafts with angle drives cut gearbox packaging space while preserving accessory power transmission.

A one-way clutch output assembly improves low-speed torque transfer in gas turbine accessory gearboxes while limiting back rotation and deformation.

Aluminium or copper alloy bearing coatings and controlled oil film thickness reduce friction loss in high-load aircraft gas turbine gearboxes.

A shared mechanical transfer system uses clutches and gears to combine wave and current inputs into one generator with steadier output.

A unitary carrier with spaced walls and gear pockets strengthens fan drive epicyclic gearing while simplifying assembly of intermediate and ring gears.

A dual-chamber oil tank retains priming oil above the vent during negative-g flight, reducing pump starvation and speeding lubrication recovery.

A threaded guard sleeve shifts shear contact from bolt threads to a uniform outer surface, reducing wear and preserving aircraft joint integrity.

A deformable collar with a frustoconical bearing surface and annular groove spreads clamping loads on CMC turbomachine parts while handling thermal expansion.

Rotation and main-supply sensing trigger backup oil flow to protect geared turbine bearings when primary lubrication becomes inadequate.

Vertical ribs break liquid rotation in a toroid tower damper, improving low-frequency wind turbine oscillation damping during assembly and operation.

A dual planetary gear and lock arrangement selectively splits power between aircraft rotors to improve VTOL and forward-flight handling.

A 3D-scanned insulation element is machined to the vane radial flange to cut play, thermal conductance, and CMC thermal stress.

When fuel pressure overtakes oil pressure, a passive valve reroutes oil around the heat exchanger to prevent fuel-in-oil leaks without added mass.

A tensile fuse disconnects the air turbine starter under overrunning torque, preventing backdrive damage and limiting replacement to the fuse.

Distributing power extraction across both turbofan spools with a superposition gearbox reduces single-spool loading and preserves efficiency.

A two-part planet carrier cage simplifies planet gear mounting while preserving load transmission and precise guide bearing alignment.

Centrifugal lubricant flow through shaft and carrier channels replaces external spraying and seals, improving lubrication consistency in epicyclic gears.

Segmented support plates isolate web plate deformation from planetary gear shafts, maintaining alignment and even load distribution in gear boxes.

Rows of orifices between adjacent oil basins equalize levels, suppress swirls, and stabilize turbine gearbox rotation.

Axially offset sun and ring gear mesh regions raise single-stage turbomachine gear ratios and ease planet tooth bending for larger fans.

Variable-diameter lubricant bores and pocket recesses raise drag in the oil film, increasing plain bearing load capacity and durability.

Virtual sensors and a digital twin estimate bearing temperature and grease life, enabling fan control that improves efficiency and service life.

Face seals and sealing tabs at the blade root and rotor disc interface retain secondary air and reduce leakage in turbine rotors.

An inclined wall and U-shaped guide retain lubrication oil in aircraft reducer gutters, limiting fallback, bounce, and recovery losses.

A deflector-coalescer flow path with labyrinth and brush seals limits lubricant migration and debris entry in gas turbine bearing compartments.

A compact planetary manual transmission with a one-way clutch and brake widens aircraft generator speed control without enlarging the drivetrain.

Independent oil supply and evacuation paths in split hydrodynamic planet bearings cut reducer size, mass, and power losses.

Frustoconical internal shaft surfaces rebalance planet carrier stiffness to cut satellite misalignment and tooth overload in turbomachine reducers.

A shear pin disconnects the starter output shaft under excessive overrunning torque, preventing turbine rotor overspeed and costly damage.

Alternating combined wings on a double-layer reverse-rotation shaft reduce wing interference and improve wind, tidal, and wave energy conversion.

An oil-film hydrodynamic stop holds the sun gear axially, absorbs axial loads, and preserves radial freedom without enlarging the gearbox.

Anticlastic web curvature strengthens a one-piece planet carrier, cutting weight, stress, and material use while improving lubricant flow.

A scoop wheel and lubricant passageway direct oil to starter bearings, cutting heat and wear during high-speed turbine engine start-up.

Axial high- and low-pressure grooves transfer oil through plain bearings to lubricate planet carriers while limiting leaks at high pressure.

A shear-pin retainer uncouples the output shaft at overrunning torque, isolating the turbine rotor from backdrive damage and costly replacement.

A planetary gear and dual electric-machine control replace hydraulic speed regulation, delivering high start torque and constant generator speed.

An epicyclic gear and paired electric motors keep aircraft turbomachine generators at constant speed without hydraulic losses or wear.

A keyed locking plate and retaining ring prevent gas turbine fastener rotation where mated component geometry limits conventional anti-rotation hardware.

A multi-gear and one-way bearing layout converts six-axis wave motion into one rotational output, improving energy capture with less structural bulk.

Two-stage fan braking and sensor-triggered gearbox lubrication limit ground windmilling, reducing gear wear during long stationary periods.

Hydrodynamic inlet recesses with expanding cross-sections improve aircraft reduction gear oil recovery, cutting ventilation losses and oil temperature.

A local stiffening mass at the torque tube-disc flange cuts bending stress in gas turbine rotors, extending service life and reducing maintenance.

A pressure-driven diaphragm and pin create a passive load path that limits inner fixed structure deflection during nacelle overpressure events.

A clutch-based gear train keeps the pump rotating one way during forward and reverse shaft motion, maintaining journal bearing lubrication in geared turbofans.

An axial biasing element reacts against the gearbox to keep turbine bearings preloaded at low power, preventing load reversal and wear.

A two-piece ring gear and radial oil passages remove spline-ring wear and clearance, improving repeatable fan balance in turbine engines.

Recesses in annular pivot grooves cut epicyclic train mass while preserving rigidity and allowing lubricating oil passages.

An integrated reservoir, conduit, and dispenser use gear-mesh capture and gravity flow to maintain emergency lubrication with less weight and complexity.

A radially open inlet and closed passage help a partial arc gutter capture seal plate oil and keep it out of gear meshes.

Thermally expanding inserts seal IBR rotor slots to cut air leakage while preserving the stress relief that extends fracture life.

Torque arm displacement sensing gives more accurate wind turbine shaft load monitoring and supports pitch and yaw control to reduce damage risk.

A planetary fan drive with carrier and ring gear bearing flanges manages turbine-fan speed mismatch while maintaining alignment and reducing stress.

An inclined ring preform guides metal flow during forging to reduce dead metal, improve strain distribution, and form convex portions accurately.

An auxiliary pump and reserve oil tank keep the geared turbine lubricated for at least 30 seconds after main oil supply failure.

An elastomer-supported journal bearing absorbs deformation and thermal expansion to avoid edge loading, seizure, and added drivetrain parts.

Thermal analysis and PSCL checks set machining depth for LTHC-damaged power turbine disks, extending life without compromising disk quality.

A blended damper pin slot face cuts transient wear in turbine blade shanks while preserving pull-load transfer and low stress concentration.

A motion-sensed auxiliary oil pump keeps geared turbine bearings lubricated when the main oil supply is inadequate or fails.

A viscoelastic particle damper in the fan shaft bearing mount absorbs ice-induced vibration, limiting displacement and strain in the cantilever case.

A groove-engaging fixing element locks a wind turbine pitch tube to the planetary carrier without sleeves or snap rings, cutting parts and cost.

Convex-concave annular recesses and air-guiding grooves disrupt boundary-layer flow to suppress vortex-induced vibration and noise.

An integrated piston-valve assembly blocks reverse gas flow during emergency stops, preventing oil ejection while reducing compressor valve complexity.

Measured pivot and bore axis orientation reduces eccentricity, mechanical stress, and wear in planetary gear train assembly.

An epicyclic gear train and brake decouple engine input from the driven load, cutting drag and enabling engine start without rotating the output.

An enclosed lubrication pipe routed through the gear shell cuts turbine engine radial volume, limits leaks, and simplifies mounting.

A casing muffler space and staggered discharge passages damp pressure fluctuations in a screw compressor, cutting noise and vibration.

Segmented vanes and annular flow channels capture oil on small turbine shafts and deliver continuous inner-race bearing lubrication.

Spherical bearings and oil-baffle passages relieve torque-frame vibration loads while improving lubrication in a fan drive gear carrier.

Internal cooling passages in a ceramic airfoil manage thermal stress and cut compressor bleed demand, improving turbine efficiency.

Annular recesses, bosses, and air-guiding grooves disrupt boundary layers to suppress tower vortex-induced vibration with lower noise.

Flexible ring-gear flanges and spherical bearings keep epicyclic fan drive gears aligned during carrier flexure, reducing vibration and wear.

Brazed surface cooling channels let turbine hot gas path components run cooler near the surface, reducing thermal fatigue and extending service life.

A preloaded elastic membrane keeps oil from draining during shutdown, enabling faster pressurization and timely startup lubrication.

An auxiliary wheel and retaining collar enable accurate turbine speed sensing and secure bayonet mounting to prevent overspeed after driveshaft fracture.

External ballast masses and low-friction steel cable deflection damp wind turbine tower vibrations during erection without permanent guying.

Pivotable flaps align reverse airflow with stator-vane inlets to reduce aerofoil separation while preserving forward flow.