Propulsion Based Emission Reduction TRIZ Cases

A hybrid power system uses high energy and high power storage devices to supply base load.

An asymmetric vortex generator reduces propeller cavitation by modifying the upstream flow field, addressing noise caused by excessive blade loading.

A submerged swimmer with dynamic fins converts vertical wave motion into horizontal thrust for unmanned water vehicles.

Segmenting torque between two prime movers via coaxial shafts eliminates unwanted coupling stress during azimuth maneuvering.

Localized suction via porous shrouds and rotating inserts improves boundary layer control, reducing fuel consumption and greenhouse gas emissions.

Segmented inclined blades form flowing channels that generate low-pressure areas, improving the lift-drag ratio by reducing drag while increasing lift force.

Variable ballast and planing hull design resolve the contradiction between weight and speed, enabling 42-knot transit while maintaining stability in heavy seas.

Segmenting the rotor with a stationary flap resolves the weight-force contradiction, enabling smaller rotors that maintain propulsive force at low wind speeds.

A propeller hub tunnel channels water through the motor stator and rotor to cool the permanent magnet synchronous drive.

Expanded communication passage prevents reverse seawater flow into combustion chambers, eliminating engine misfire risks.

Control equipment manages electric energy sources using dynamic activation and deactivation limits based on target power values.

A wave-powered vehicle launches and recovers a drone for maritime observation.

A hybrid boat transfer box connects an electric motor to a split drive shaft for flexible power routing.

An electrolysis chamber produces hydrogen and oxygen gas to mix with volatile organic compounds for ship propulsion combustion.

Vertical axis turbines aligned with the intermediate chamber reduce pressure drop and turbulence during reciprocating tilt movements.

Segmented stators and magnetic bearings maintain efficiency across varying speeds while preventing corrosion and cavitation damage.

Manages boil-off gas pressure in storage tanks by condensing vapor with cold LNG, eliminating complex multi-stage compression equipment.

Acceleration-based control adjusts trim actuator setpoints to prevent overshooting caused by hydraulic inertia and discrete actuator limits.

A marine vessel control system assigns engine mode switching to an existing start switch operator using processor logic.

Mobile pressurized tanks supply fuel via non-cryogenic pipes, eliminating delicate cryogenic filling operations.

A marine powertrain unit uses electric motors for direct drive to enable low-speed maneuvering and reversing.

A hybrid watercraft converts wave motion into electrical power using an underwater generator to charge a battery for autonomous propulsion.

An internal motor drive enables a Magnus-effect rotor to retract below deck, protecting components from severe weather while minimizing drag.

Segmented folding lines distribute tension across the sail leading edge to reduce manual effort during retraction at fixed stations.

Excitation device controls turbogenerator output via the DC link to stabilize frequency without mechanical throttling losses.

Articulating sections adjust the rigid wing configuration to reduce drag and improve efficiency across varying wind directions.

A marine propulsion control module selectively deactivates idle engines to reduce fuel consumption.

A central control unit manages individual Magnus rotors and an electric motor to optimize ship propulsion.

A hybrid watercraft propulsor combines a variable pitch propeller with an exhaust driven turbine for efficient thrust generation.

Segmenting propulsion into independent engine and motor units eliminates complex switching mechanisms while maintaining coordinated thrust.

Merging the gearbox and stator housing reduces installation space for electrical machines in confined ship engine rooms.

Embedded power simulation determines minimum diesel engine RPM requirements to maintain marine vessel stationary positioning.