Gear Lubrication/Cooling TRIZ Cases

Hydrophobized layered-crystal powder prevents moisture-driven aggregation in strain wave gears, reducing torque loss and stabilizing high-speed operation.

A recessed receiver below the lubricant surface captures settled iron particles after shutdown, enabling representative reducer wear diagnosis.

A barrier and deflector keep clean and polluted lubricant flows separate, improving guide-device lubrication in epicyclic gearboxes.

A segmented gear cover shields the differential ring gear from lubricating oil, cutting stirring loss and oil heating during high-speed travel.

A compact oil-collecting guide channels splashed gearbox oil to hard-to-reach parts, improving lubrication coverage without extra oil or stirring loss.

A floating bushing and annular groove maintain low-leakage lubricant transfer in compact planetary gears despite radial and axial movement.

Integrated oil channels and an intermediate-shaft-driven pump lubricate input-shaft bearings without a separate power supply, cutting size and cost.

Axial projections and snap-fit fastening let a transmission oil collector align precisely with support inlets while simplifying assembly.

Sensor-driven vacuum and oil pump control maintains gearbox partial vacuum, cutting turbulence losses and extending maintenance intervals.

A downstream drain oil passage lets a CVT heat exchanger boost cooling while limiting excess oil to the transmission mechanism and reducing resistance.

Multiple lubrication ports target high-load pinion gear regions to balance oil distribution, reduce uneven wear, and improve traction.

A stepped inner and outer bore creates a gravity-fed sump that sustains bearing lubrication and heat dissipation in fixed-carrier planetary gears.

A relay valve lets the main and auxiliary tanks share one oil line and nozzle, maintaining emergency transmission lubrication with fewer parts.

Cooling fluid fed from inside the gearwheel uses centrifugal force to reach gear teeth, improving high-speed transmission cooling in EVs.

Collected oil mist condenses and drips onto helicopter transmission gears, extending dry-run time without external oil feed or added power.

Dual radially staggered lubricant sumps and a gravity overflow path improve lubrication coverage in ground rollers while limiting lubricant volume.

Monitoring the back-up check valve state reveals whether a lubrication circuit is in nominal mode, back-up oil supply, or air draw.

Compressor-pressure feedback and electromechanical valve actuation regulate turbine lubricant flow without hot bleed air, reducing excess oil flow and jams.

By enclosing lower gears and extracting excess oil below them, this integrated shroud and pickup cuts churning loss and packaging space.

Stored lubricant pockets keep an aero engine gear mesh lubricated during oil supply interruptions without auxiliary systems or pre-flight steps.

A raised secondary sump and channel redirect gear-thrown oil to lubricate gearbox parts while reducing churning losses without pumps.

Integrated housing and cover channels use centrifugal force to feed differential bearings precisely while reducing oil foaming and splashing losses.

Multiple pressure-drop sections slow emergency oil flow so bubbles can rise, keeping bearing lubrication stable during hovering aircraft faults.

An internal axle-and-pinion shaft lets one motor directly drive left and right wheels at different speeds while reducing powertrain complexity.

Internal vertical plates and fins split gearbox oil paths to prevent recirculation, cool gears and bearings, and reduce teeth power loss.

Variable precharge timing based on lubricating oil pressure helps avoid unintended lock-up clutch engagement and improves control accuracy.

Cross-connected lubricant coolers and controlled flow paths keep aircraft gearboxes lubricated after cooler or passage faults, reducing landing risk.

A collar-and-cutout barrier in the planetary transmission retains lubricant against centrifugal force, reducing gear friction and wear.

An integrated oil reservoir and opening sustain gravity-fed lubrication during pressure loss, improving helicopter dry-run capability without duplex systems.

A nested-shell stack uses interleaved passages and transfer conduits to route multiple fluid flows efficiently while improving heat exchange.

A vacuum pump and check valves return transmission oil by pressure differential, removing scavenging pumps and cutting drive system complexity.

A pressure relief bypass valve reroutes cold, high-pressure lubricant away from the filter to protect gearbox and pump components during startup.

Shift-position-controlled lubrication cuts oil flow to inactive splitter gears, reducing transmission power loss and fuel waste.

A refrigerant passage beside a gear-fed oil storage pocket cools lubricating oil and the motor without adding separate heat exchanger parts.

Thermal contraction opens baffle plate apertures at low oil temperature, speeding oil return to the pan and preventing oil pump air suction.

A mesh filter in the lubricating oil path blocks foreign matter before valve timing gears, preventing wear and lockage at low speed.

Integrated pockets store lubricant during normal operation and feed gear meshes during oil supply interruptions, helping prevent gear and bearing damage.

An off-axis floater container passively stabilizes lubricant level in tilted gear compartments, cutting churning losses while preventing wear.

A float-valve sump keeps a low oil level at rotating parts to cut splashing losses while preventing starvation on steep slopes.

Integrated water channels, interdigitating baffles, and wavy ribs improve reducer heat dissipation for high-speed vehicle operation.

Integrated low- and high-pressure fluid passages cool and lubricate hydrostatic transmission components while cutting parasitic losses and hoses.

A dual-passage lubrication catch handles clockwise and counterclockwise rotation, reducing assembly errors, cost, and orientation constraints.

Flowability-based gear selection cuts clutch creep torque in vehicles, preventing unintended movement while preserving smooth starts.

A bypass cartridge lets one transmission housing support coolerless or external oil-cooler setups while limiting weight, space, and over-cooling.

Selective closure of dual oil outlets lets one gearbox oil line fit multiple variants while preserving reliable lubrication in tight spaces.

An elastic member self-adjusts roller pressing force to prevent gross slipping while avoiding complex actuators and excess rolling resistance.

An oil collection element shields the transmission breather from oil spray, enabling pressure compensation without leakage in extreme driving.

Gravity-fed auxiliary oil delivery keeps helicopter transmission bearings lubricated during emergencies when pumped shaft lubrication is reduced.

A segmented hood and guard fan assembly improves transmission cooling while lowering vibration and production complexity.

Selective port alignment in a tiltrotor scavenge pump maintains oil flow while limiting air entry into scavenge lines across gearbox orientations.