Gear Lubrication/Cooling TRIZ Cases

A melt-triggered lubricant release protects aircraft transmission bearings and planets at high temperature without active controls or power.

Two-stage mechanical pump control switches displacement by oil pressure to maintain gearbox lubrication at low speed without excess pressure.

An electric motor drives three fixed pumps and a valve to separate lubrication and actuation flow, cutting transmission losses and wear.

A helical groove and oil passages create a screw-pump lubrication path in a planetary gear mechanism, reducing pump count, size, and complexity.

A hollow drive shaft nested in the differential housing channels sump oil to spider gears, improving lubrication at low speed and high torque.

Pressure sensing in a sealed measurement chamber enables immediate lubricant leakage detection in a speed reducer without bulky collection hardware.

A spindle-coupled outer gear stabilizes radial clearance in a gerotor pump, cutting friction and vibration while preserving magnetic flux gap.

A direction switching unit holds rotor eccentricity so one oil pump can run in forward and reverse rotation without relocating suction or discharge ports.

Oil mist collected inside the gearbox housing is returned as gravity-fed droplets, helping helicopter transmissions keep running during oil-supply loss.

Direct grease-cup lubrication feeds the housing race to cut friction, heat, debris burning, and vibration in rotary meat-processing knives.

A two-wall baffle plate blocks oil flung from an immersed rotating body before it reaches a dry-side rotating body, cutting aeration, noise, and pump wear.

A gear cover isolates the differential ring gear from bulk lubricating oil, cutting drive load and power loss during high-speed travel.

Dual lubricant sumps and an overflow path help a soil working roller lubricate inner and outer radial components with less wear.

Pipes aligned to shaft radial channels balance lubrication flow, cutting excess fluid demand and drag losses in transmissions.

Radial projections latch a collecting tray to planetary bolts, securing lubricant delivery without threads or fixing pins.

A venting duct, collection space, and throttle duct relieve transmission housing pressure while capturing and returning oil to prevent escape.

Directly attaching the lubricant filter to the pump shortens oil lines, cuts power loss, and speeds engine lubrication in tight motorcycle packaging.

A tapered CVT oil filter increases inlet-side media area to cut pressure loss, extend filter life, and prevent jerking and bucking.

An auxiliary gear overlaps the pinion shaft to retain it in the differential housing, removing clips or fasteners and simplifying assembly.

An angled backing plate protrusion keeps the brake pad aligned on the caliper under thermal expansion, improving mounting stability and load distribution.

A sealed lube cap sprays lubricant into a rotating shaft bore at low pressure, replacing costly rotary seals while lubricating nearby bearings.

An inner-surface oil guiding part redirects lubricant around the differential window, reducing oil escape while preserving gear support lubrication.

A segmented inner ring hole closed by a separate member preserves power roller manufacturability while reducing oil leakage and rigidity loss.

An angled pick-up tube opening stays below tilted oil surfaces to avoid air intake, blockage, and unstable hydraulic pump flow.

A position sensor rotates the differential casing to align an aperture with an oil jet, maintaining lubrication with lower axle power loss.

Integrated flow-guide reservoirs on the drive housing lubricate transmission elements while saving axial space, cost, and drag torque.

Brake cooling oil is routed through a torque converter oil guide shell to keep automatic transmission brake drag torque low despite oil level changes.

A self-pressurized oil reservoir uses sensor feedback and valve control to meter lubrication precisely without external power or pressure.

By combining the filter and connection units inside an existing vehicle housing, this case cuts fastening complexity and material use.

A passive reservoir and shroud reuse sprayed oil so rotating gears keep an aircraft gearbox lubricated after pressurized flow is lost.

A reversible rotary pump with dual aspiration paths keeps engine oil flowing during hard cornering, avoiding air suction without dry-sump complexity.

A shaft-mounted disc and return channel keep transmission oil from leaking past the bearing while lowering power loss and recycling oil to the sump.

Balanced zinc, calcium, and triol additives help transmission fluids resist low-speed wear and scuffing in heavy-duty gear tests.

An adapter plate and adjustable-speed pump flush automatic transmissions faster, removing used fluid, wear particles, and dirt more completely.

Integrated holes, flow passages, and a welded cover route lubricant to planetary gears and bearings while improving gearbox sealing.

Controlled urea-thickener particle size and extreme-pressure additives help grease improve torque transmission, leakage prevention, and wear resistance.

A stationary lubricant conveyor uses windage and an axial recess to spray oil toward selected gears and bearings while reducing churning losses.

Spaced oil feed ports push hot lubricant out of the bearing clearance, improving friction bearing cooling while limiting oil-flow power losses.

An exchangeable spacer sets baffle position across different drive axles, cutting baffle variants while guiding lubricant to reduce splash losses.

A snap-on cover with a sealing lip, beveled tabs, and sloped runoff keeps wash water out of vented caps while preserving fluid venting.

Partitioned coolant tanks and guide ribs create maze-like flow in a gearbox housing to eliminate blind areas and improve lubricant cooling.

Weir portions between pinion gear seat surfaces retain and distribute oil at startup, preventing sliding-part lubrication loss in compact differentials.

Internal lubricant channels built into a gear shroud cut hardware, weight, and assembly time while directing jets to meshing gears and bearings.

A pivoting thrust washer alternates between abutments to spread startup and shutdown wear, reducing bearing damage risk in planetary gears.

Radial grooves in a rotating differential side gear draw oil from the reservoir for more uniform lubrication, reducing noise, wear, and pump complexity.

A plain bearing with rolling-bearing support transfers oil to variable-pitch fan blades while reducing seal wear, misalignment, and assembly bulk.

Angled retainer discharge ports use Coriolis force to spread oil across all toroidal CVT rollers and suppress fretting wear.

An oil passage aimed at the thrust bearing avoids retainer collisions, preserving oil velocity for better cooling with less lubricant.

Built-in contact, guide, and sealing elements secure the oil filter without external fasteners, cutting material use and simplifying replacement.

A compensating tank and power-dependent oil return keep transmission oil levels stable, cutting churning losses while preserving lubrication and cooling.