Gear Lubrication/Cooling TRIZ Cases

A submerged air vent tube routes the oil pump vent into the oil pan to block air entry and prevent ATF leaks when parked on inclines.

A coaxial double-pump layout with planetary gearing lubricates and cools the traction motor and transmission while keeping the EV drive compact.

A switchable lubrication path raises or lowers oil pressure by temperature and load, improving transmission lubrication while reducing energy loss.

A ribbed gutter redirects oil into the gear meshing region, improving tooth-surface lubrication despite centrifugal scattering during forward running.

Splash oil from the gear stage cools an integrated drive motor in one chamber, cutting seals, heat buildup, and noise.

Cold-start lubricant bypassing relieves high pressure before filtration, protecting the gearbox and oil filter in pressurized gearboxes.

Gravity-driven axle oil filtration captures magnetic and non-magnetic debris without pumps, reducing maintenance and oil change frequency.

Turbine-blade guide geometry redirects radial clutch oil into laminar tangential flow, reducing foaming, cavitation, and pressure drops.

A concentric rotor layout lets a hybrid transmission oil pump run by direct or electric drive without a summation gear, cutting size and complexity.

A temperature-triggered valve recirculates cooler oil from a tank to the differential housing, limiting overheating without complex coolant hardware.

A sealed oil accumulation chamber keeps upper rolling elements immersed, preventing dry starts, splashing, noise, and oil heating in vertical-axis transmissions.

A synthetic-oil lubricant with calcium salts and glycerin ester cuts sludge, lowers cold-start torque, and helps prevent speed reducer leakage.

Gear-shift-position control cuts oil flow to inactive splitter gears, reducing transmission power losses while preserving needed lubrication.

A standoff-mounted flat heat shield creates an air gap that deflects catalytic-converter and exhaust heat away from the PTU.

An inclined lubricant line and split cavity let oil drain by gravity in a vertically mounted gearbox while maintaining planet carrier lubrication.

Highly viscous water-soluble polyglycols cut friction and wear in open gear drives while extending lubricant life and sprayability.

A circumferential passage links carrier and output shaft oil paths to keep planetary gears lubricated through drive, neutral, and park.

A crankcase oil groove and cover plate place dripping holes above gear mesh points to cut oil scatter, mechanical loss, and wear.

A segmented brake hub places hydraulic chambers and couplings inward to suppress deformation, keep piston alignment, and prevent fluid leakage.

Centrifugal lubricant channels inside rotating transmission parts feed axially spaced bearings without pumps, saving gearbox space and complexity.

Passive bypass passageways and integrated fins cool transmission fluid without valves or actuators, reducing complexity while maintaining heat transfer.

Bonded plastic half shells integrate branches and nozzles into one oil pipe, cutting part count, distortion, and assembly cost.

Dynamic upper and lower temperature limits let a drive unit heat the transmission only when needed, cutting energy use and friction losses.

A two-part shroud limits ring gear contact with excess lubricant, cutting churning losses while maintaining proper gear lubrication.

Double-cleaning splashed return oil with precipitation, filtration, and magnetic removal keeps pumping unit lubrication cleaner and effective.

Leaked thrust-bearing oil is redirected through sun gear, carrier, and oil guide passages to improve pinion shaft lubrication in automatic transmissions.

A two-point groove-and-pin contact structure spreads load and maintains a lubricating film to cut wear, friction, and surface damage.

A gear-integrated solid lubricant melts during oil-out events and directs backup lubrication to gear teeth without sensors or operator action.

A polymer-fatty ester gear oil with controlled boron content improves shear stability, viscosity balance, and anti-micropitting in wind turbines.

A polymethacrylate-modified transmission oil balances high viscosity index with shear stability to maintain oil film and reduce low-temperature stirring resistance.

Integrally joined plastic half-shell spray pipes simplify engine and transmission oil routing while cutting weight, joints, and oil losses.

A gerotor pump integrated into a toroidal CVT combines lubrication and cooling flow through the radiator and hollow shaft, reducing fluid-system complexity.

Integrated annular oil chambers and channels lubricate planet gear axes and meshing teeth while cutting leak points and assembly complexity.

A dual-drive two-stage oil pump delivers high clutch pressure and cooling flow without overdimensioning, cutting energy use and saving space.

An oxygen-functional polymethacrylate in low-viscosity mineral oil helps transmissions keep oil film at heat while limiting low-temperature stirring resistance.

A pressure-responsive lubrication valve feeds more oil during clutch slip and less after coupling, cutting oil stirring loss without complex control.

An amide and metal-detergent oil blend helps CVT transmissions raise intermetallic friction while preserving clutch anti-shudder life.

Retaining links constrain planet pins to prevent erratic carrier deformation and gear interference after a cracked planet gear rim.

A check valve in the second oil passage blocks backflow during shift changes, stabilizing actuator pressure without a larger oil pump.

A 360-degree passage between the carrier and hollow output shaft keeps oil flowing through drive, neutral, and park to reduce wear and noise.

A one-piece annular distributor creates two sealed oil chambers to lubricate turbine gear planet carriers with less assembly complexity.

A rib placed between the strainer suction port and differential chamber blocks air-entrained oil, cutting abnormal transmission noise.

A gravity-fed solid lubricant body rubs a hoist drive member to coat chain links automatically, reducing wear, downtime, and manual lubrication.

Filtered air is routed through a guiding channel into the transfer case to cool transmission disks while keeping the motorcycle layout compact.