Propulsion Based Emission Reduction TRIZ Cases
- Hybrid Ship Power Storage System for Load Variation
A hybrid power system uses high energy and high power storage devices to supply base load.
- Asymmetric Vortex Generator for Propeller Cavitation Control
An asymmetric vortex generator reduces propeller cavitation by modifying the upstream flow field, addressing noise caused by excessive blade loading.
- Wave-Powered Unmanned Vehicle Fin Propulsion
A submerged swimmer with dynamic fins converts vertical wave motion into horizontal thrust for unmanned water vehicles.
- Coaxial Shaft Azimuth Thruster Torque Segmentation
Segmenting torque between two prime movers via coaxial shafts eliminates unwanted coupling stress during azimuth maneuvering.
- Flettner Rotor Localized Suction for Propulsion Efficiency
Localized suction via porous shrouds and rotating inserts improves boundary layer control, reducing fuel consumption and greenhouse gas emissions.
- Magnus Rotor Blade Assembly for Lift-Drag Ratio
Segmented inclined blades form flowing channels that generate low-pressure areas, improving the lift-drag ratio by reducing drag while increasing lift force.
- Expedition Vessel Hull Design for High Speed and Stability
Variable ballast and planing hull design resolve the contradiction between weight and speed, enabling 42-knot transit while maintaining stability in heavy seas.
- Flettner Rotor Flap Segmentation for Lift and Weight
Segmenting the rotor with a stationary flap resolves the weight-force contradiction, enabling smaller rotors that maintain propulsive force at low wind speeds.
- Propeller Hub Cooling Tunnel for Electric Motor Heat Management
A propeller hub tunnel channels water through the motor stator and rotor to cool the permanent magnet synchronous drive.
- Vessel Exhaust Communication Passage Water Management
Expanded communication passage prevents reverse seawater flow into combustion chambers, eliminating engine misfire risks.
- Electric Power System Control Equipment for Dynamic Energy Source Activation
Control equipment manages electric energy sources using dynamic activation and deactivation limits based on target power values.
- Wave-Powered Vehicle UAV Launch and Recovery System
A wave-powered vehicle launches and recovers a drone for maritime observation.
- Hybrid Boat Propulsion Transfer Box Reducing Inertia
A hybrid boat transfer box connects an electric motor to a split drive shaft for flexible power routing.
- Ship Propulsion System with Electrolytic Hydrogen and Oxygen Gas Mixture
An electrolysis chamber produces hydrogen and oxygen gas to mix with volatile organic compounds for ship propulsion combustion.
- Vertical Axis Turbines for Ship Energy Generation
Vertical axis turbines aligned with the intermediate chamber reduce pressure drop and turbulence during reciprocating tilt movements.
- Multiple Stator Underwater Jet Motor for Marine Propulsion
Segmented stators and magnetic bearings maintain efficiency across varying speeds while preventing corrosion and cavitation damage.
- Ship Fuel Gas Supply System Boil-Off Gas Management
Manages boil-off gas pressure in storage tanks by condensing vapor with cold LNG, eliminating complex multi-stage compression equipment.