Power Plants Using Propulsion Unit Combinations TRIZ Cases

Dynamic equivalent fuel consumption lets hybrid systems allocate battery and generator power more efficiently under irregular loads.

A planetary gear counter-torque layout reduces the power needed to hold an outboard motor steering angle while keeping the lower case compact.

Positioning the electric motor above the anti-cavitation plate uses natural water flow for cooling while keeping the lower case smaller and lower-drag.

Variable refrigerant pump control matches generator motor load and oil temperature to cut gear-unit noise and power use while maintaining cooling.

Adaptive control patterns switch propulsion and steering by heading error and distance, helping small watercraft reach destinations faster with less energy.

A planetary gear and motor-generator let marine propulsion switch between engine and electric drive while improving fuel use and battery charging.

A planetary gear and motor-generator let marine propulsion switch between mechanical and electric drive to improve fuel use and onboard power management.

Below troll thrust, an electric auxiliary thruster maintains stable vessel speed while cutting noise and CO2 from engine state switching.

Automatic propeller lowering and drive restriction prevent useless auxiliary thrust above water, reducing energy waste during combined propulsion.

A hybrid pod layout places one electric motor inside the pod and splits propeller drives to cut transmission complexity while keeping propulsion compact.

A rocker-crank pedal transmission uses biased connecting rods and spring cables to deliver smooth rotary output without over-run clutches.

Independent shaft speeds adjust propeller pitch without complex hydraulics, improving thrust control, efficiency, and maneuverability.

Independent power paths vary dual shaft speeds to adjust propeller pitch precisely, improving maneuverability, fuel efficiency, and wear.

Independent shaft speeds adjust propeller pitch through a coupling, replacing complex hydraulics for more precise marine thrust control.

Independent power paths rotate dual propeller shafts to adjust pitch precisely, improving maneuverability, fuel use, and component wear.

At the planing threshold, torque shifts to combustion propulsion to avoid rapid battery depletion and smooth hybrid marine vessel acceleration.

Speed-threshold control coordinates electric and combustion propulsion to smooth marine vessel acceleration while reducing energy loss, emissions, and noise.

When a hybrid vessel reaches planing speed, combustion propulsion takes majority torque to prevent rapid electric energy depletion.

Speed-threshold control coordinates electric and combustion propulsion to smooth marine acceleration while cutting energy use, emissions, and noise.

Rotation speed comparison across engines, motors, and propulsors detects actuator or power transmitter faults that disrupt ship mode management.

A dual engine-electric jet propulsion setup switches modes by condition to improve low-speed maneuvering while reducing noise and vibration.

A segmented rigid hull and inflatable perimeter tube lock into a recessed pocket to combine rigid-watercraft performance with compact storage.

Separate water and cooling-medium loops help engine and motor handle changing boat modes without over-cooling or insufficient cooling.

Separate water and cooling-medium loops with a heat exchanger let engine and motor cooling match changing operating modes without cross-heating.

Adaptive control mapping matches lever input to each propulsion mode, improving ship handling and clutch transition reliability.

An electric machine pivots the propeller shaft 180° to deliver immediate reverse thrust, cutting vessel emergency stop time and distance.

Predictive motor-generator torque control offsets wave-driven shaft torsional loads, stabilizing engine operation and reducing fuel use.

An auxiliary oil pump keeps clutch pressure available at low speed, letting the electric motor hold constant propeller speed without slip.

Electric motor speed builds oil pressure and matches engine speed before clutch engagement, reducing torque peaks in marine hybrid drives.

A hybrid pod drive combines a combustion engine and electric machines, using ambient water to cool the pod-integrated motor.

Independent electric machines, clutches, and nested shafts improve hybrid pod compactness, reliability, and backup propulsion.

A coaxial marine hybrid transmission combines dual-clutch propulsion with electric backup and flexible energy modes for slim hulls.

This case uses horizontal and vertical shafts to package dual electric machines while supporting flexible electric propulsion modes.

A coaxial marine transmission uses selective clutching for electric backup operation.

Coaxial marine hybrid transmission shafts provide electric backup propulsion after clutch failure.

This marine hybrid drive combines clutches, coaxial shafts, and electric machines for compact power distribution and backup propulsion.

Predicting throttle valve position with a feed forward signal reduces overshoot and instability when changing marine engine speed.

A spindle-shaped unmanned vessel with a ballasted keel and hybrid propulsion system.

Integrating battery packs into the hull structure optimizes center of gravity, resolving stability deterioration from added weight.

Dynamic engine speed adjustment balances battery charging efficiency against noise generation during watercraft operation.

Starting the electric drive motor first eliminates rotational inertia, allowing the electric starter unit to crank the combustion engine without overload risk.

A marine power distributor allocates demand and surplus power to separate batteries, ensuring reliable engine starting.

A drive arrangement redirects thrust forces from an outboard unit to a supporting frame structure fixed to the vessel hull.

An electronic control module manages power flow between a pedal generator and battery to drive a watercraft motor.

Controller manages marine engine idle states using an auxiliary power source to activate the engine on demand, eliminating manual restart delays.

A marine hybrid drive integrates combustion and electric power sources via a shared crown gear assembly.

A marine transmission uses a selective power coupler to connect the power transfer shaft directly to the propulsion output shaft.