Engine Fuctions TRIZ Cases

Valve stem acceleration reveals when a slave valve fully opens, enabling accurate steam valve wear checks without disassembly or turbine shutdown.

A curved deflector channel guides lubrication oil radially outward in a mechanical reducer gutter, reducing fallback, turbulence, and recovery losses.

Abutment faces retain the oil separator cover without bolts or welding, cutting assembly weight and simplifying maintenance.

Uses expandable flange-hole tensioning to correct tower ovality and align bolt holes for faster, safer wind turbine assembly.

Selected time-series segments paired with classification labels cut training data needs while improving decision speed and accuracy.

Rotating baffles on the fan drive carrier redirect expelled lubricant into fixed gutters, conserving oil momentum and improving recovery.

An elastic spring clip holds segmented BOAS mounts against torque, maintaining aft face seal contact and preventing gas path leaks.

A pin-clearance design based on gear deformation preserves planet gear bearing clearance at takeoff, reducing contact, friction, and heat.

A secondary gearbox reservoir stores oil above sump level so rotating gears can keep bearings lubricated during windmilling or pressure loss.

Recover wasted tank pressure by converting pressurized water into steam through fine bore channels, then feeding plasma reactors for hydrogen and oxygen production.

Rotating carrier baffles impart momentum to expelled lubricant, guiding it into a fixed gutter to improve turbine fan drive oil recovery.

Rotating oil directors steer expelled lubricant into auxiliary reservoirs, improving oil recovery and turbine engine efficiency.

A shear-pin decoupler disconnects the starter output shaft during overrunning torque, preventing turbine rotor overspeed and damage.

A dipstick-mounted piston switches between sealing and venting in an aircraft engine oil filler tube to prevent false readings and ease refilling.

Mass flow loss estimation lets gas turbine compressors adjust operating limits closer to surge thresholds, improving efficiency and power output.

A differential geartrain with electric machines enables bidirectional power transfer, power multiplication, and better distribution between turbine rotors.

A differential gear path lets a boost spool augment accessory and core engine power at low load while avoiding unnecessary losses at high power.

Hydrophobic or lipophobic coatings on turbomachine oil deflectors speed oil drainage, cut recirculation, and reduce oil consumption.

Stored pressure in an auxiliary tank keeps gearbox gears and bearings lubricated when the primary lubrication pump loses pressure.

A spring-backed oil accumulator keeps gas turbine transmission bearings supplied during inclined or negative-G flight while flushing limits oil heating.

Carrier-mounted oil directors spin expelled lubricant toward receiving surfaces and auxiliary reservoirs to recover and recirculate oil in fan drive gears.

Axial deflection of a planetary gearbox ring gear is converted into a pressure signal to calculate output shaft torque for aircraft propulsion control.

Load-absorbing spacers share tensile and bending loads in a gas turbine flange fastener, protecting the bolt thread and fitting tight casing space.

A rotating butterfly disc and link mechanism increases bleed flow area in gas turbine engines without the size and weight penalty of poppet valves.

An elastic-layer connecting head lets a tuned mass damper swing while preventing self-rotation, reducing wind tower resonance and oscillation.

A brake-fixed second input stabilizes blower compressor speed, avoiding bleed-air losses and reducing aircraft fuel consumption.

Flexible airflow manipulators mounted on a wind turbine tower segment redirect flow to suppress vortex shedding and tower vibration.

Coupling plates link the carrier plates outside the gear path, cutting planetary carrier weight while preserving rigidity in aircraft gear mechanisms.

Selected sensor time-series segments train multiple model instances faster while preserving decision quality with less data.

Floating flange engagement mounts forward and aft oil manifolds without bosses, cutting carrier machining, weight, and thermal stress.

A gerotor-driven ball screw with a piston lock moves thrust reversers between positions while removing the extra motor, weight, and space.

Spring and damping elements decouple a wind turbine drive connection to cut drivetrain vibration, fatigue risk, and noise.

A dual-diameter planet gear raises aircraft turbomachine reduction ratio while lowering bending moments through aligned bearing support.

A six o'clock auxiliary oil reservoir and pump maintain bearing and gearbox lubrication when primary turbine engine oil pressure is lost.

A biased seal member transfers lubricant across the rotating carrier interface to keep planetary gears reliably supplied in a turbine fan drive.

Fluid damping and flexible bearing support cut radial loads in an air turbine starter, extending bearing life and enabling higher shaft speed.

Recoverable SMA spacer deformation absorbs fan blade out loads, limiting vibration and preserving gas turbine component alignment.

A tuned gear mesh stiffness range helps an aircraft epicyclic gearbox absorb misalignment, improve load sharing, and limit torsional vibration.

Mahalanobis distance and SN ratio analysis reveal long-term plant trends across varied sensors while reducing manual monitoring workload.

Automatic inverter frequency setting uses pump model and pressure data to match flow and lift, cutting energy loss and manual adjustment.

Angled oil injection with expanding feed lines guides lubricant into high-load bearing zones, lowering temperature and power loss.

A pressure-differential piston valve bypasses the fuel-oil heat exchanger to stop Fuel-in-Oil leaks without adding engine mass.

A titanium pin with a hardened steel sleeve and oil holes cuts gas turbine gear weight while preserving surface hardness and wear resistance.

Separate annular scoops split oil flow between seal track cooling and bearing lubrication, improving sealing and reducing leakage risk.

An integrated attachment cover on the plain bearing reduces reducer assembly misalignment and helps maintain stable load distribution in turbomachines.

Chevron-enhanced plates and tapered manifolds improve flow uniformity, heat transfer, and fin protection in aircraft heat exchangers.

Sensor feedback adjusts a pressure relief valve in an aircraft engine lubricant reservoir to vent excess pressure across changing conditions.

A rated low-speed midshaft and gearbox mode spacing help turbomachines avoid critical-speed vibration and whirl instability at higher speeds.

Plate banks with inlet and outlet manifolds improve airflow and pressure control in aircraft heat exchangers, boosting cooling effectiveness.

A gravity-drained oil deflector captures sun gear oil and redirects it to cut recirculation, ventilation losses, and gear heating.

Straight line segments in the blade platform wall reduce tooling complexity while maintaining aerodynamic performance.

Branching fuel passages increase equivalent inertance to suppress combustion vibrations across wide thrust ranges.

A fluidic rotor blade pivots on an arm using a finger sliding in a groove to adjust inclination during rotation.

Interlocking cylindrical tool secures rotating components without part removal, accelerating engine servicing operations.

A self-contained hydraulic lock uses a pre-charged accumulator to drive rapid actuation without external power sources.

A gas turbine vane platform uses a recessed pocket and cover to circulate cooling airflow.

A control device adjusts ventilator valve closure timing using temperature-correlated steam flow thresholds to stabilize combined cycle plant operations.

Elongate spar buoys utilize asymmetric ballasting to enable rollover transitions between submerged operating and floating maintenance conditions.

Varying radii of curvature in radial flange lunules reduce stress concentration and extend seal ring lifetime.

Clinch nut assemblies anchor the channel web to accessible flange faces, eliminating insecure temporary holding and preventing fastener loss during assembly.

A vapor-cycle system cools cabin air using refrigerant phase changes instead of ram air heat exchangers.

A heat exchanger design mixes conditioned air with hot inlet streams to reduce thermal shock.

Variable area fan nozzle and boundary layer control devices prevent airflow separation during windmilling, reducing nacelle weight and drag.

Segmented interdigitated ducts merge recuperator functions into the manifold structure, resolving volume constraints while maintaining high thermal efficiency.

Segmented pin-fin arrays create gaps for optimal film-cooling hole placement, resolving drilling restrictions that limit cooling effectiveness.

A cobalt-modified beta-nickel-aluminide coating protects nickel-base superalloys through physical vapour deposition.

Segmented cover and support projections define internal cooling passages within turbine components.

A continuously variable transmission decouples the engine spool from the propulsion load, enabling power variability while maintaining efficient operation.

A closed secondary cooling circuit releases waste heat into a ballast tank cavity between double walls.

A nacelle driving mechanism coordinates mobile cowl translation with thrust-reversing door rotation.

Monitoring condensate temperature and directing flow through low-pressure economizer stages to prevent acid condensation corrosion.

Ceramic matrix composite turbine blades attach to a metallic hub via asymmetric dovetail channels and a retainer system.

Diagonal cross-lashing and bridging elements reduce shear loads on stacked wind turbine blades, enabling higher stacks without excessive lashing.

Segmented lubrication circuits with mechanical shutoff valves prevent oil line rupture failures from affecting other fans, maintaining propulsion reliability.

Primary and secondary fuel-oil heat exchangers adjust viscosity to 0.58 mm2/s, resolving efficiency losses from alternative fuels.

A tangential spring support system positions seal members radially away from the rotor shaft during low pressure conditions.

A short pin creates a short rotor to measure unbalance, eliminating docking faults that compromise modular balancing accuracy.

Asymmetric lug design prevents 180-degree misalignment, ensuring reliable vibration damping.

Insulation between shielding and heating arrangements prevents lightning damage to icing mitigation systems.

Electrostatic sensors detect inlet particulates to identify sea spray and ice accretion in gas turbine engines.

An asymmetrical radial groove design resolves uneven stress distribution during spoke centering of gas turbine inner rings.

Separating non-driven and driven elements into dedicated compartments eliminates internal pumps, preventing overheating while maintaining reliable lubrication.

A split crown locking system with a U-shaped cross-section secures concentric turbine components against axial and radial translation.

Switching to a low-speed auxiliary shaft prevents rotor sag while eliminating bucket wear caused by high-speed rocking.

A wind turbine control system detects load sensor reliability by measuring in-plane moments during operation.

Segmented static and dynamic frames replace bulky slewing bearings, reducing rotor mass while maintaining structural stiffness for pitch control.

An epicyclic gear clutch reverses fan rotation to generate aftward propulsive thrust, reducing thrust reverser weight compared to heavy blocker door mechanisms.

Direct light processing creates integrated core-shell ceramic molds with thin filaments for precise cooling hole formation.

Turbocompressor merges environmental control and buffer air systems into a single unit driven by engine exhaust energy.

Sequential separation stages within a unified housing resolve fine particle retention and external interface complexity in rotary vane vacuum pumps.

Double row purge holes in a turbine blade tip cap distribute cooling air outwardly, preventing oxidation and cracking from high temperatures.

Nested collars in a vane adjustment assembly position annular rings precisely to resolve engine performance versus mechanism complexity trade-offs.

A redundant waveguide system guides radio frequency signals between node groups using shared electromagnetic pathways.