Gear Lubrication/Cooling TRIZ Cases
- Wheel Hub Torque Multiplier With Integrated Pinion-Annular Gearing
A hub-integrated pinion and annular gear layout shifts torque change to the wheel, reducing upstream drivetrain stress, width, and weight.
- Dual Oil Circuit Layout for Cold-Start EV Driveline Loss Reduction
A dual oil circuit uses temperature-dependent viscosity to bypass the cooler at cold start, cutting EV driveline losses without control valves.
- Gearshift Shaft Oil Injection for Uniform Bearing Lubrication
Bidirectional oil injection through shaft through-holes keeps gear bearings uniformly lubricated across speeds while reducing oil volume and axle weight.
- EV Drive Hydraulic Circuit for Gear Shifting and Parking Lock
A single electric pump feeds cooling, lubrication, gear shifting, and parking lock actuation through branched hydraulic flow.
- Transfer Case Cooling Structure for Torque Clutch Heat
A floor tunnel insulator and protruding airflow guide cool the transfer clutch, improving torque distribution performance under friction heat.
- Transmission Oil Reservoir Shielding for Better Thrown-Oil Collection
An integral annular shield narrows the output gear splash zone, raising local sump oil level and improving oil delivery into the reservoir.
- Powertrain Thermal Coupling for Low-Friction Transmission Startup
Predictive thermal coupling transfers drive motor waste heat to preheat the transmission, cutting startup friction and energy loss.
- Rear Cover Oil Cooling Layout for Electric Motor Transmissions
Integrating the oil pump, cooler, and passages into the rear cover shortens motor cooling flow paths, cutting pipe loss and cost.
- Electric Motor Transmission Oil Spray Cooling for Compact Housing
Pressurized transmission oil sprays cool the stator winding and rotor directly, cutting housing diameter while maintaining high power density.
- EV Transmission Lubricant Preheating via Thermal Energy Control
Cold-start transmission losses are reduced by routing heat through a transmission heat exchanger to warm EV lubricant before operation.
- Adaptive Vehicle Lubrication Using Sensor-Based Delivery Control
Sensor data adjusts lubricant delivery frequency to actual vehicle use, reducing under- and over-lubrication, wear, and energy use.
- CVT Housing Venting and Split Covers for Cooling and Service Access
Split CVT covers, airflow passages, and finned sheaves improve cooling in tight vehicle packaging while keeping belts and clutches easier to service.
- Electric Power Take-Off Geartrain for EV Hydraulic Pump Torque Matching
A geared electric PTO matches motor speed to hydraulic pump torque, cutting size, heat, cost, and energy loss in EV accessories.
- Motor Vehicle Drive Lubrication Layout for Dry-Start Wear
A baffle-guided oil reservoir and sump outlet keep the rotor shaft, bearings, and drive pinion lubricated from startup, even after long idle periods.
- Torque Converter Gearbox Heating Through Controlled Clutch Blocking
Selective clutch engagement blocks the gearbox output to turn torque-converter power loss into fast, uniform transmission oil heating.
- Automatic Gearbox Parking Lock with Dual Hydraulic Pump Circuits
Dual hydraulic pump circuits let an automatic gearbox actuate the parking lock reliably while still supplying cooling fluid in a compact layout.