Engine Fuctions TRIZ Cases

A titanium pin with a hardened steel sleeve cuts geared turbine weight while preserving gear-support hardness and oil delivery.

One-way rotation devices decouple the blower drive from engine rotation, enabling higher electrical-only capability and electric engine start.

Alloy-coated journal bearing surfaces cut friction and power loss in aircraft engine gearboxes under high load and sliding speed.

Marked teeth guide planet pinion positioning in an aircraft turbomachine reducer, improving load distribution and reducing overload risk.

A porous mesh wall captures sprayed gearbox oil and evacuates it quickly, cutting ventilation losses, heating, and seizure risk.

Vertical intake, turbine, and cleaner stacking cuts fracturing unit size for remote transport while improving noise control and fire safety.

Two independent hydrodynamic planet bearings cut reducer axial size and oil flow while preserving load capacity in aircraft turbomachinery.

Interference-fit end caps seal a journal bearing lubricant filter without ring seals, enabling compact bore integration and reliable filtration.

A three-position poppet and piston bleed valve vents the compressor during engine start while improving pressure management and reliability.

A two-shell planet carrier with radial broaches simplifies planet gear mounting while distributing load and accommodating flexing in aircraft reducers.

Movable particles in blade cavities dissipate vibration as heat, reducing fatigue and structural mass in long wind turbine rotor blades.

Jet openings feed oil directly to sun gear teeth while side windows recover heated lubricant, combining lubrication and scavenging on a rotating carrier.

A liquid-column expansion tank stabilizes wind turbine coolant pressure without gas bubbles, reducing topping, leakage risk, and maintenance.

A tilt adjusting jig keeps the steam turbine inner casing aligned during assembly or disassembly, preventing galling and easing removal.

A minimal bearing layout supports and centers two-stage planet carriers while simplifying assembly and maintenance in wind turbine gearboxes.

A bushing at the double-walled tube outlet stabilizes the gap, cuts lubricant loss, and maintains flow in wind turbine planetary gears.

A press-fit sleeve with a radial web stiffens the hollow planet pin, improving bearing load distribution while cutting weight and wear.

Unequal oil supply to compressor- and turbine-side bushings detunes bearing frequencies, improving rotor stability and reducing NVH transfer.

A passive thermosiphon loop cools wind turbine gearbox oil without pumps or fans, cutting installation space, maintenance, and complexity.

Real-time pump and pipeline models predict liquid arrival and adjust station settings to cut energy use as fluid properties change.

Long bolts, radial slots, and a water-cooled bearing case let a radial turbocharger absorb heat growth without a heat shield.

A planetary gear set lets an electric machine couple at different gearbox points for generator, motor, and shutdown support modes.

A shearable mechanical fuse in the engine-case mount absorbs fan-blade-out overload energy and keeps auxiliary components positioned.

A movable mass with adjustable stops and sliding support improves damping of changing tower vibration modes during wind turbine assembly or dismantling.

A mechanical fuse in the auxiliary mounting bracket fractures under fan blade out shock loads to absorb energy and keep the component attached.

Threaded radial retaining pins lock CMC turbine ring sectors against radial play, enabling higher-temperature operation with less cooling air.

Coaxial annular cups split oil delivery by gear stage, reducing pressure-drop issues and enabling different lubricants in planetary reducers.

Overlapping clutch shift ranges in a coupled planetary gearbox narrow accessory output speed variation and prevent doorbelling at shift points.

A cantilever pawl engaging a ratchet hub stops threaded service tubes from backing off under vibration and thermal loads, preventing oil leakage.

A one-piece circumferential oil manifold inside the bearing housing removes add-on seals and hardware while improving oil jet placement and repair.

A rotating gear redirects lubricant through a passageway to cool and protect starter bearings during high-speed turbine engine start-up.

A variable-reaction latch holds an aircraft generator disconnect securely under vibration and high loads while still allowing safe reconnection.

A slewing ring inner ring places the lower rolling row below the screw surface to improve stiffness, torque transfer, and blade connection space.

An elastomer-supported journal bearing absorbs drivetrain deflection and thermal expansion without extra flexibility parts, reducing seizure risk.

Different lubrication gaps make compressor- and turbine-side bushings rotate at different speeds, reducing NVH and improving rotor stability.

Concentric rings, swirl vanes, and serrations cut pressure, peak Mach, and turbulent mixing noise during gas turbine bleed-air venting.

A rotatable locking ring holds a flange hub under high drive power, then applies axial disassembly force to cut maintenance time and stress.

A sensor-driven valve scheme matches gearbox lubricant flow to thrust, pressure, and altitude to cut excess losses and prevent wear.

A hardened outer layer on a titanium journal support pin cuts gas turbine gear weight while preserving wear resistance and oil distribution.

Segmented upstream and downstream baffles redirect secondary air flow to keep oil out of the gear mesh, cutting heat and windage losses.

A superposition gear train and one-way clutches split accessory power draw across two engine spools to improve efficiency and simplify starting.

Axial offset between sun and ring gear meshes enables a single-stage fan drive with higher reduction ratio and lower planet tooth bending stress.

A folding linkage and roller mechanism deploy blocker doors without drag links across the bypass duct, cutting cruise drag and energy loss.

A unitary rotating carrier simplifies epicyclic fan drive assembly while improving gear train rigidity, mounting strength, and lubrication flow.

Flexible members between the ring gear and bearing housing damp gearbox vibrations while transmitting torque in compact wind turbine drivetrains.

Matrix inlets with hydrodynamic recesses capture centrifuged hot oil from reducer satellites, reducing pressure loss, ventilation loss, and oil use.

Separate radial-tube filters with different porosity tailor lubricant flow for geared turbine parts under varying temperature and pressure conditions.

Hydrophobic or lipophobic gutter surfaces speed hot oil evacuation in aircraft turbomachines, improving recycling and reducing wear.

A thermal insulation element between CMC vane hardware and the radial flange cuts heat transfer, reducing thermal stress, gradients, and play.

A passive thermosiphon cools wind turbine gearbox oil without pumps, cutting installation space, maintenance, and system complexity.