Gear Lubrication/Cooling TRIZ Cases

Roller element bearings replace sliding contact between pins and bores, extending track assembly life.

Integrated crankshaft gear train combines torque inputs from two opposed-piston engine crankshafts into a single drive mechanism.

Convoluted flow matrices in additively manufactured monolithic housings enable customized heat transfer properties that fit irregular vehicle spaces.

A fluid filter housing positions the intake opening below the minimum static fluid level to direct flow against gravity.

Carrier housing galleries use centrifugal force to pump lubricant through rotating tapered roller bearings.

Two axial and one radial needle bearing absorb bending moments while a spring element compensates for thermal expansion to reduce shaft deflection.

Optimized passage sectional areas in the differential case increase lubricating oil flowrate, eliminating insufficient lubrication under severe conditions.

A porous polymeric matrix lubricating member delivers controlled lubricant release to linear actuator load-carrying surfaces.

Relocating the oil tank to the anteroposterior exterior of the case cover reduces pump loss by shortening oil passages while maintaining capacity.

A separable weir member on the baffle unit reserves lubricant oil for radial discharge to the ring gear, reducing stirring resistance in aircraft gearboxes.

Bowl-shaped clutch lifter guides oil axially inward along the power transmission shaft, resolving insufficient lubrication at inner frictional members.

Perforated walls and a solid deflector reduce the momentum of ejected lubricant, minimizing reservoir size while maintaining reliable supply.

Centrifugal force from a shaft-mounted impeller distributes oil vertically across varying shaft heights, eliminating the need for external pumps.

A filter assembly uses a bypass valve and screen to manage hydraulic fluid flow in automatic transmissions.

Nanodiamond additives in aircraft gearbox lubricants reduce friction by 30-50% while improving heat conductivity to minimize weight.

A wheel loader transmission accumulates oil in upper and lower reservoirs, directing lubricant to components through gravity flow and shaft-generated pressure.

A secondary sump captures cooling oil from an electric machine and returns it to the lubrication circuit.

A partition member divides the casing into separate reservoirs for the rotation body and strainer.

Fatty acid ester lubricant lowers sliding resistance to prevent wear on the transfer belt and minimize load on the driving source.

Spool valves in a transfer case clutch release oil only during engagement, eliminating parasitic drag on the primary output shaft when disengaged.

A sulfur-containing neopentyl glycol phosphite compound provides antiwear protection in lubricant compositions.

A reducer uses a vertical oil reserve to immerse gear elements for effective lubrication.

Oil guide member channels fluid from in-case passage to collection pocket, increasing lubricant volume for gear cooling.

A filter device uses an actuator-controlled bypass to adjust fluid flow through coarse and fine media based on temperature conditions.

Segmenting the housing into nested compartments resolves volume-lubrication trade-offs while preventing oil leakage.

Tapered section directs lubricating oil into spiral grooves, increasing flow rate without enlarging device volume.

A bidirectional electric pump circulates hydraulic fluid between module and transmission sumps, preventing air ingestion when line pressure is unavailable.

An asymmetric journal pin adapts to high pressure deformation, creating a wedge-shaped clearance that prevents metal-to-metal contact and wear.

An electronic limited slip coupling integrates a hydraulic control unit and clutch assembly into a bolt-on sleeve configuration.

Axial grooves on the idler pinion bearing surface distribute lubricating fluid, avoiding complex shaft machining costs.

A transmission cooling unit uses a separate drive motor to power the fan and oil pump independently of the gearbox shafts.

An annular groove feeds axial and radial flow passages that distribute coolant through the gear body, reducing stress risers caused by radial through bores.