Gear Lubrication/Cooling TRIZ Cases

Gravity-fed auxiliary tank supplies critical bearings during low torque, reducing churning losses while maintaining reliable lubrication.

Rotating fin members in a bicycle drive unit generate internal airflow, resolving heat accumulation within the compact housing.

Pressurized helium gas replaces air in the gearbox to enhance heat transfer efficiency, reducing weight while preventing lubrication failure fires.

Internal transverse and longitudinal passages cool the nut without increasing its length or outer diameter, maintaining running accuracy.

Axially adjustable gear teeth maintain steady meshing engagement, reducing wear and vibration caused by tooth thickness reduction over time.

A reduced diameter portion in the worm reducer housing increases lubricant pressure toward the bearing abutment.

Axial oil channels supply hydraulic fluid through a notch to cool friction plates, reducing rotational resistance and radial size.

A passive drain valve uses thermally activated material to open and drain hot lubricating media, preventing mechanical component submersion during pump failure.

Hot forming and rapid quenching enable precise spline teeth on boron steel, resolving cracking risks from limited cold-formability.

Segmented planetary pins with stepped tapers enable assembly in confined spaces by eliminating large hydraulic cylinders.

A compact oil pump uses side-by-side rotors to deliver independent lubricating flows through a shared drive mechanism.

Vacuum reservoir switches wind turbine gear lubricant between dry and wet sump modes, ensuring emergency supply.

A transmission oil filter carrier reduces vibration susceptibility through multiple fastening means and integrated fluid connections.

Radial positioning of the locking slider reduces axial length without expanding the casing.

A vehicle drive component adjusts its thermal conductivity by moving a liquid between a reservoir and an intermediate space using a displacement element.

A segmented axle guard protects the housing while a removable portion covers the drain plug aperture for maintenance access.

Oil collecting ring guides lubricant into the reservoir, eliminating separate pumps and reducing churning losses.

Integrates a hydraulic fluid expansion tank within a drive device housing using a siphon tube, eliminating external lines and reducing weight.

An internally toothed gear in a drive transmitter contains grease under centrifugal force, preventing belt contamination and maintaining reliable transmission.

Internal flow passages route lubrication fluid through the axle housing to maintain bearing cavities, preventing drainage on sloped terrain.

Nested crown wheel bowls create a reservoir that redirects splashing oil, reducing power losses from churning in automotive axles.

Integrated bearing cap heat sink dissipates shaft thermal energy via forced convection to resolve high-speed power and temperature trade-offs.

Lubrication pump circulates gas to project fluid mist, eliminating external compressors and reducing system weight.

Dynamic oil flow regulation reduces transmission loss by minimizing stirring drag while accelerating hydraulic oil warm-up during cold starts.

Relocating lubrication from the nut to a porous slider compact extends stroke length while simplifying assembly.

An air blocking plate suppresses interference between cooling flows to direct airflow efficiently from the drive pulley to the driven pulley.

Increasing gear rigidity across stages suppresses wear and noise in compact geared motors, resolving the trade-off between torque output and motor size.

A gasket extending portion forms a flow path that guides lubricating oil to discharge onto an inner surface.

A controllable valve diverts hydraulic fluid flow between a reservoir and shifting elements, reducing drag torques and heat losses in hybrid transmissions.

An automatic gearbox planetary stage bore routes pressure medium to a piston-cylinder arrangement, resolving spatial constraints in the transmission housing.

An inclined fan cover directs airflow along a gearbox casing to cool distant bearing supporting portions while suppressing velocity loss.

A hollow pinion shaft integrates a pump mechanism to circulate oil through its internal structure during rotation.

Controller drives electric oil pump when calculated flow exceeds mechanical margin, maintaining shift speed at low engine rotation.

Segmented drive adapter housing manages thermal oil expansion, preventing overflow into the clutch area.

Segmenting the oil seal cap body resolves the contradiction between plug removability and tight through-hole attachment.

A continuous cooler flow valve directs transmission fluid from the torque converter to the cooler circuit at engine startup.

Steam treatment reduces porosity in a powder metal gear hub to enhance adhesion, eliminating complex machining steps required for solid steel pucks.

Heating grease within the nut housing lowers viscosity for precise distribution, eliminating worn non-loaded balls and reducing manufacturing costs.

Segmented reservoir design with electric oil pump reduces stirring resistance in transmission while preventing oil deficiency during vehicle startup operations.

A drive shaft powered fan generates directional airflow to cool reduction gears in compact railway vehicle spaces.

An axle assembly integrates a gear reduction unit with an interaxle differential unit within a common case to optimize torque distribution.

Lubrication guide channels splash oil from rotating components to critical clutch packs, eliminating pump complexity while maintaining steady lubrication.

A stationary oil feed member with helical formations directs lubricant axially to the thrust bearing assembly.

Segmenting the housing isolates grease from rolling bearings, preventing leakage while maintaining mesh lubrication in electric power steering systems.

Motor housing doubles as an air chamber via a communication passage, preventing lubricating oil overflow while maintaining compact height.

Micro-structured tooth surfaces form grease depots that retain standard lubricants, resolving insufficient lubrication in compact plastic worm gears.

A modular adapter manifold supports a hydraulic pump and fluidly connects it to a motor via integrated porting.

A bevel gear mechanism uses a shared bore and flanged bushing to center components.

Polishing high-speed gear tooth surfaces into plateau structures reduces loss torque and enhances transmission efficiency.