Propulsion Based Emission Reduction TRIZ Cases

Segmented rail-mounted sail units with automatic reefing resolve complexity and cargo obstruction trade-offs.

A submarine structure integrates a floating member with an energy supplier to provide continuous power and air supply for underwater operations.

A dual inverter power converter system maintains propulsion continuity through independent bridge control and dc link buffering.

A surface-mounted Magnus rotor generates frictional resistance to dampen vessel roll motions using controlled rotation.

Auxiliary drives convert mechanical shaft rotation into electrical energy to power a second propeller, maintaining efficiency at low speeds.

Nesting a drive shaft inside a hollow transmission shaft reduces the lower case dimensions and minimizes underwater drag for improved efficiency.

Optimized hub-to-tip ratio and nested mechanisms reduce hydraulic pressure while maintaining high propulsion efficiency.

An electric linear machine converts translational kinetic energy directly into electrical energy at the point of generation.

A compact hybrid propulsion system integrates an electric motor and internal combustion engine via an overrunning clutch for selective power delivery.

Folded wingsails stored in containers unfold to capture wind energy, reducing fuel consumption and greenhouse gas emissions.

Segmented shift shaft design transmits control forces while maintaining a compact center of gravity.

Separating fins from the fore-nozzle reduces resistance to propeller inflow, enabling efficient pre-swirl generation for fast ships.

Oil-lubricated roller bearings eliminate water corrosion in rim drive motors, increasing torque capacity for dynamic positioning vessels.

Segmented flow generators in a funnel-shaped conduit resolve the trade-off between high speed and vertical takeoff capability while eliminating cavitation.

Varying angular distances between consecutive blade tips disrupts pressure wave regularity, reducing noise while maintaining dynamic balance.

A marine fuel tank arrangement uses dedicated lines and plugs to isolate different fuels within a single container.

A symmetrical vessel drive device mounts to masts or keels using galvanic isolation to prevent corrosion in seawater environments.

Curved blade flange on screw propeller lowers ice load transfer to pod drive components, reducing weight and manufacturing complexity.

Autonomous wave-powered vessels distribute fertilizer to specific ocean locations using onboard sensors and central coordination.

Double helical foil blades direct water flow to generate focused torque, improving fuel efficiency at low rotational speeds.

Horizontal transom mounting frees stern space for boarding while reducing fluid resistance by extracting the drive unit from the boat bottom.

Offset submerged hulls cancel standing waves to cut drag and double efficiency.

Pivoted planar blades capture omnidirectional fluid flow to generate reactive thrust forces for marine propulsion.

A rudder foil with a resilient flapper member converts vessel pitching into forward thrust.

Adding dual-fuel electric generators to steam turbine LNG carriers reduces fuel consumption while preserving the original propulsion plant reliability.

A marine vessel power generation system produces hydrogen from seawater via onboard electrolysis for emission-free port operations.

A retractable sail system harnesses wind energy via the Magnus effect to generate forward thrust.

Parallel transmission paths route engine and electric motor power to a propeller shaft without shared mechanical components.

Wireless bow-to-stern signal transmission eliminates cable damage risks while maintaining reliable remote control in submerged modular watercraft.

Segmenting power sources with a high inertia HTS generator manages pulsed loads, enabling efficient electric weapons support without weight penalties.

A rotating wind resisting device reorients a sail between vertical and horizontal positions to enable flight.

A lift-generating wing system uses an external centrifugal fan to draw air through suction openings and expel it for propulsion.

Sensors transmit real-time kite data to a control device, enabling precise steering without visual contact or direct physical connection.

Internal heating and air ducts direct warm air to the rotor outer wall, resolving icing issues that cause operational imbalance and safety hazards.

Integrated crankshaft passages deliver lubricant to the overrunning clutch, eliminating separate pumps and reducing system complexity.

A pressure hull penetrator traverses the submersible boundary to enable in-place refueling of fuel cell reactant sources.

A wave-powered water vehicle uses a tethered swimmer with rotating fins to generate horizontal propulsion from vertical wave motion.

Reversing electric motor operation enables bidirectional energy flow, utilizing propulsion reserves to supply minimum power for the on-board network.

A compressor bypass line routes gas through a turboexpander to re-cool the intake stream for efficient cryogenic compression.

A hybrid marine transmission merges primary and secondary rotors into a single assembly using one clutch mechanism.

Feedforward power turbine control adjusts exhaust flow based on engine load, eliminating response delays that cause frequency fluctuations.

Centrifugal weight-actuated piston engages power transmission, eliminating hydraulic circuits to reduce axial dimensions.

A hybrid marine propulsion control circuit manages engine and motor power distribution through distinct user input devices.

Self-service gripping mechanism secures folding lines to eliminate manual intervention during automated wing deployment.

A kite wing mechanical coupling drives a generator to extract energy from alternating wing movements.

A steering unit uses moveable attachment points and actuators to alter the geometric shape of a wind propulsion wing element.

A ship sail propulsion unit retracts vertically into a cavity defined by transverse structural elements.

A hybrid watercraft propulsion system uses a single control lever to manage engine and electric motor modes.

A ship propulsion system segments the drive train into a high-speed electric motor and a speed-reducing gearbox to decouple power generation from shaft rotation.

A pivoting thrust unit redirects propeller thrust by rotating the drive device about a vertical axis.