Propulsion Based Emission Reduction TRIZ Cases

See how a hybrid propulsion system integrates diesel-driven generators, electric motors, and wa

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See how a converging nozzle and diffuser assembly minimize cavitation and turbulence in marine

A mechanically driven boat A/C unit avoids heavy generator sets by using the propulsion engine underway and an electric motor in port.

Redundant detection and control paths isolate battery-cluster fire risks in ship cabins and trigger reliable local or cabin-wide suppression.

Electromagnetic levitation replaces wear-prone bearings in a rotor sail, enabling higher rotation speed with lower maintenance and safer gap control.

Heat from the accommodation fuel cell keeps the propulsion unit warm in standby, cutting startup time and thermal cycling in all-fuel-cell ships.

A sealed motor housing uses metal heat-conduction members to dump heat into surrounding water, cooling direct-drive craft propulsion without reducers.

Keycode-based function control lets marine propulsion users unlock only needed features, reducing cost while keeping secure server-managed access.

An electromagnet and gap sensor levitate the rotor sail coil unit, removing bearing wear to support higher rotation speed and lower maintenance.

Redundant detection and control paths isolate ship battery cabin fire points and trigger local suppression even during partial BMS failure.

Separate bus and propelling lines feed independent motor windings to cut conversion losses, noise, vibration, and layout constraints.

A three-line modular power bus and dedicated connector simplify multi-domain power distribution while supporting high-power sensors and energy monitoring.

Keycode-based function control lets marine propulsion users unlock only needed features while a server manages secure activation.

Bidirectional DC/DC choppers link low- and medium-voltage DC buses to cut transformer weight, reduce losses, and improve redundancy.

Induced voltage from entrained motor rotation can overheat marine propulsion inverters, so the controller triggers cooling when voltage rises.

Combining main and emergency generators keeps return-to-port equipment powered after fire or flood without adding generator capacity.

Variable suction zones and controllable porosity improve sail boundary-layer control, boosting thrust while cutting fuel use and emissions.

A dog clutch and one-way clutch replace bulky differential and centrifugal clutches to switch or combine marine propulsion power sources.

A dog clutch replaces bulky differential gears and centrifugal clutches to switch or combine two marine propulsion power sources in less space.

A switchable generator motor cuts clutch torque load in marine propulsion, shrinking the drivetrain while retaining assist and generation.

Autonomous stealth mode selection lets one unmanned vehicle operate in air, on water, and underwater while handling interchangeable payloads.

Controller-based speed matching and retry withdrawal enable smooth marine drive-source switching while reducing gear noise and actuator load.

Surface pressure sensing estimates apparent wind angle and closes the control loop for wind propulsion under vessel-induced flow distortion.

By matching measured rudder load to a target load from course error, this control reduces meandering and unnecessary rudder turns in waves.

Transient object sensors and cloaking controls let a multi-mode unmanned vehicle avoid detection while launching and recovering payloads autonomously.

EV-derived motor, inverter, BMS, and battery control improve electric vessel efficiency and durability while lowering development cost.

Interchangeable drive couplers and selective gearbox openings make power transmission easier to reconfigure for pumps, motors, and generators.

Controller-based retry control pauses and reattempts shaft engagement to cut actuator load and abnormal noise in dual-source marine propulsion.

Controller tuning aligns engine and motor speeds during clutch switching to cut shock and noise in hybrid vessel propulsion.

Selective gearbox openings and interchangeable couplers let one drive platform be reconfigured for pumps, motors, generators, and gear ratios.

Controller tuning aligns engine and motor speeds before clutch switching, reducing shock, noise, and vibration in hybrid vessel propulsion.

Shared area data from other vessels improves wind-assisted route planning by capturing real weather and hydrographic conditions across wide sea areas.

A semi-submersible unmanned sonar craft uses submergence and towed sonar to track submarines while lowering detectability at sea.

A modular quarter-hull watercraft uses roof-mounted energy harvesting and a sliding roof to cut charging effort while keeping storage compact.

Wind sensing and blade speed control let a rotor sail match thrust commands, improving ship propulsion efficiency and safety in changing winds.

Porous ribs and spanwise cells spread air from one base inlet, enabling stable sail inflation, easier handling, and lower power use.

A movable pod support with line guidance and elastic plates enables autonomous traction kite pod takeoff and landing while reducing impact and collision risk.

A pivoting base with internal wing storage automates deployment and retrieval while reducing manual handling and ship maneuvering.

Movable solar collectors and onboard water treatment let this catamaran houseboat avoid large tanks while staying self-sufficient in shallow waters.

A pivoting spreader lets rigid sails stow flat against the sail wall while keeping shrouds taut for structural support and low wind resistance.

Wave and solar energy harvesting in a modular electric watercraft cuts charging dependence while improving portability, access, and safety.

A diesel-electric drive switches propulsion modes so high-power thrust uses the engine while low-power operation cuts emissions with shore-charged battery power.

Cooling and pressure control recover recirculated ship fuel gas while limiting flash gas, oil solidification, and cooling energy use.

A water ejector replaces powered fans in double-walled fuel pipes, cutting energy use and explosion-proof enclosure cost while supporting leak detection.

Automatic propeller RPM adjustment balances natural-energy auxiliary thrust to hold ship speed and reduce fuel use under external forces.

AC-side coupling through motor drives and breakers enables marine driveline cross-over without bus tie hardware, cutting cost, weight, and complexity.

Cooling and pressure control in a ship LPG recirculation loop cuts flash gas, limits oil buildup, and improves fuel gas reuse.

A split Flettner rotary rig uses a pivoting upper section to lower sail height for bridge clearance while improving ship stability in strong winds.

AC-side motor drives and breakers link twin hybrid drivelines for cross-over power transfer while cutting bus tie complexity, weight, and fuel use.