Gear Lubrication/Cooling TRIZ Cases

A welded carrier and one-way valve keep lubricant sealed inside the differential, enabling consistent lubrication and flexible fluid choice.

Air from an input-shaft fan is guided by casing fins and axial grooves to cool bearing and gear meshing heat with a simpler layout.

Gravity-fed oil lines in a vertical upper sun shaft lubricate the axial bearing, simplifying coaxial shaft alignment and oil delivery.

Meshing gears displace viscous oil through a squeeze opening and channels to protect spur gear bearings during low-temperature startup.

A pivoting housing, lower input shaft, and pumping disc keep a compact rail traction gearbox lubricated while reducing floor height.

Interference-fit spindle ends secure a planet carrier without retainers, reducing retention complexity while allowing removal and reuse.

A channeled oil deflector drains excess lubricant away from a multi-plate clutch pack, cutting open-clutch drag loss while preserving cooling.

A relay oil passage between dual trunnion pistons preserves power-roller lubrication while shortening the CVT shaft portion and cylinder.

A differential magnetic sensor detects lubricant particles faster and quantitatively, avoiding vibration-sensitive particle bridges.

An external conduit and reservoir route ring-gear-displaced lubricant to cut rotational drag while maintaining drivetrain lubrication.

A check-valve hydraulic layout lets one reversing pump handle transmission lubrication and on-demand clutch cooling with lower complexity and energy use.

When primary pump pressure drops, the controller shifts to neutral, starts the auxiliary pump, and limits engine speed to prevent clutch slip.

Fixed oil spray aimed at shaft deflection means boosts centrifugal oil pressure to lubricate tight-space planetary gearsets without dynamic seals.

Targeted nozzles cool roller edges and opposite surfaces in a toroidal CVT, improving heat dissipation and reducing premature degradation.

A lubricant-supported rotor and nested planetary stages shrink wheel-end motor packaging while preserving shock and vibration robustness.

A recessed oil-passage groove lubricates toroidal CVT cam contacts while avoiding a thin, weak cam plate section.

Ring gear-driven lubricant flow enables differential cover filtration and cooling without a pump, reducing wear, oil degradation, and maintenance complexity.

Internal oil passages and radial holes lubricate shift forks while springs keep the shaft neutral for smooth bidirectional gear shifting.

A hydrodynamic retarder tied to the lube oil circuit limits auxiliary drive overspeed during power loss and protects the planet carrier.

An integrated oil reservoir and opening keep helicopter transmission parts lubricated by gravity when pump pressure drops, without added complexity.

Centrifugal cam engagement and lubricant viscosity reduce wear during high-speed freewheeling while removing the retainer from the clutch.

An amide and metal-detergent CVT oil balances high intermetallic friction with clutch anti-shudder performance and longer shudder life.

A CVT oil blend using diamine, glycolic acid amide, and phosphorous ester raises pulley-belt friction while limiting gear and bearing losses.

A fixed oil spray feeds shaft deflection means and a rotating cup to lubricate planet gear teeth and pins in tight radial space without dynamic joints.

Heating lubricant inside the axle sump cuts cold-start viscosity, shortening warm-up time and reducing parasitic drag and fuel use.

Inclined retainer discharge ports use Coriolis-driven oil flow to lubricate all pocket rollers and suppress fretting wear in toroidal CVTs.

A controlled gap between the trunnion shaft and piston lets the piston move radially, preventing cylinder interference and sealing pressure imbalance.

An integrated lubricant cavity and applicator keep worm threads coated, cutting wear, friction loss, and relubrication effort.

Gravity-fed axle oil filtration uses an upper inlet, lower outlet, and baffle to capture non-magnetic particles without external pumps.

Reversing motor rotation switches pump transmission ratios, enabling compact vehicle pump operation with lower dynamic loads.

Independent lubrication subsystems isolate aircraft gearbox compartments, preventing total oil loss if one circuit fails.

Internal wall ramps and ducts capture ring-gear spray in either rotation direction to keep reducer bearings lubricated with one case design.

Separate oil flows with different temperatures and flow rates let bearings and gear wheels be lubricated more efficiently while reducing cooling system size and cost.

Open-cell metal foam cooling elements increase transmission housing heat dissipation while cutting weight and fin manufacturing cost.

A molybdenum additive paired with a polymeric friction modifier cuts DLC-to-steel friction while protecting the DLC surface from wear.

Integrated guide ribs and hurdle units speed oil through a transmission cooling cavity to improve heat transfer while saving space and cost.

A slotted bushing and cone unit let transmission oil fill smoothly while venting displaced air to prevent overpressure and maintain sealing.

Pressurized air drives a lubrication piston inside the ballscrew to supply grease continuously and cut manual replenishment downtime.

A non-contact interference surface strips entrained oil from rotating gear teeth to cut windage drag and rotating mass in shrouded assemblies.

Churned oil is routed through guide plates and flow paths to lubricate hollow shafts and bearings without a separate oil pump.

A shared, continuously refilled lubricant reservoir keeps both pumps active, avoiding switch delays and protecting the aircraft gearbox during oil loss.

An annular separator keeps planet carrier and planet gear lubricant streams apart, reducing contamination, lubricant waste, and wear.

A below-gear oil tank and sliding gear support reduce module footprint while maintaining gear alignment under thermal elongation.

Parallel mechanical and electronic pumps adapt transmission oil cooling and lubrication, reducing pump displacement and fuel economy loss.

An annular disk secures planetary gear pins against dropout and rotation while preserving axial play to avoid thermal distortion during assembly.

A press-fit torsional fuse in an epicyclic gear system slips at threshold torque to absorb surges and protect drivetrain components.

A rotatable support ring around the sun gear adds opposite-side carrier support, easing assembly while reducing noise, friction, and wear.

Angled ring gear flanges improve centering and axial alignment while preserving direct force paths and oil flow in turbomachine reduction gears.

A unified carrier with single and double pinion shafts cuts component cost while boosting torque capacity, support reliability, and lubrication.

A lubrication insert uses oil channels and a dam to keep differential bearings fed and cooled during uneven wheel-speed operation.