Propulsion Power Plants TRIZ Cases

Straight bevel gears with a crowning portion on the drive shaft reduce friction and manufacturing costs compared to Gleason spiral gears.

Two-stage contact-making apparatus with a current limitation element prevents high charge current pulses and sparking risks in outboard drive systems.

Synchronizing remote controller states across multiple outboard motors ensures stable operation during startup transitions.

A hydraulic switching valve adjusts outboard motor raising speed based on watercraft status signals.

A boat uses redundant power supply lines and communication cables to ensure continuous propulsion unit operation.

A double-effect hydraulic cylinder uses a segmented sealing head with separate plug and sealing elements for independent component replacement.

Movable trim tab resolves the contradiction between simple structure and limited thrust vectoring by enabling dynamic attitude adjustment.

Cylindrical cams convert rotational energy into linear reciprocating motion, enabling efficient underwater propulsion while reducing power consumption.

Trim control system selects profiles mapping vessel speed to trim angles, resolving adaptability complexity trade-offs.

Spherical bearings in a marine trim and tilt system align trim rod force with its longitudinal axis, reducing transverse stress on cylinder units.

Segmented engaging projections and recesses on the dog gear distribute high output power loads to prevent breakage of clutch components.

A cover member encloses the steering actuator and power transmission mechanism within a liquid-tight space.

Electric shift motor drives a detent mechanism to lock the outboard motor gear position once movement completes.

A hybrid watercraft propulsion system integrates a control lever with a controller to manage engine and electric motor operation.

Integrating clutch body and actuator into single casing simplifies assembly accuracy while maintaining structural layout flexibility.

An automated securing system stabilizes a trolling motor assembly in its stowed position using an electromagnet locking mechanism.

A stowable marine propulsion device uses a pivotable actuator linkage to move the propulsor between positions.

Automatic actuator assembly adjusts jack plate height based on vessel speed sensor data.

A marine vessel throttle system uses a fine adjustment switch to precisely modify the throttle opening degree alongside an operation lever.

A tiller interlock mechanism uses a plunger and recess to separate shift and throttle controls.

Arc-shaped sliding portions on a bushing convert linear steering force to rotation, reducing friction and improving power transmission under high thrust.

Spaced hull cavities with varying depths and air purge lines remove trapped air to improve maneuverability and propulsion efficiency.

A vibration isolating member between the exhaust pipe and component prevents wiring deterioration while maintaining compact size.

Electronic control unit manages throttle and gate movement to enable controlled deceleration without releasing the steering mechanism.

Non-perpendicular transom geometry increases available steering angle to resolve maneuverability limitations during sidle translation.

Segmenting the crankshaft extension allows independent flywheel and pulley sizing, reducing engine weight while maintaining structural strength.

An oriented shroud redirects acoustic waves away from occupants, reducing cabin vibration.

Acoustic panels divide large engine compartments into smaller sub-compartments, reducing acoustic resonance and passenger discomfort.

A marine propulsor pivots ninety degrees via a gearset, clearing scissor lift trailers during transport.

Segmented cowling panels protect light sources from UV damage while a reflective strip redirects illumination outward for visibility.

Variable activation time control reduces overshooting and undershooting errors caused by discrete actuator inertia and hydraulic line expansion.

A protective cover surrounds a deck-mounted liquefied natural gas fuel tank to isolate it from air exposure.

A steerable tractor drive pivots a gear case forward of its vertical shaft to position propellers ahead of the steering axis.

Gear housing planar portion directs water flow into the intake port, preventing cavitation and ensuring stable cooling at high speeds.

A watercraft remote control network merges signal paths through a primary station to simplify wiring architecture.

Segmented water sensors and an intermediate switch trigger the interlock circuit to prevent electrical hazards from water ingress.

Segmented fairing elements pivot relative to each other to prevent double twisting and torsional stress accumulation on towed submersibles.

A water sensor triggers a shutdown device to interrupt conductive connections between poles and storage elements.

Segmented top cowls with adhesive layers resolve manufacturing restrictions by increasing shape freedom while maintaining sealability and rigidity.

A boat-mounted control stick uses pulleys and cables to steer an outboard motor, eliminating the need for side-saddle driver positioning.

Segmenting shift actuation across propulsion devices reduces simultaneous engagement sound and mechanical shock while maintaining steering performance.

A tunnel adapter channels water to protect the intake from debris, while a directional nozzle steers the exhaust to resolve steering limitations.

Twisted ridged tubes and flow dividers boost heat transfer efficiency within compact marine engine volumes.

An electric watercraft controller activates a rear warning light via signal detection, improving safety without adding complex communication hardware.

Automatic trim control system positions marine drive to tucked launch state then adjusts based on vessel speed thresholds to prevent propeller spray.

An integrated steering actuator protects hydraulic components from environmental exposure while simplifying assembly through nested structural design.

A marine propulsion controller limits engine output when the electric motor is not driven.

A marine propulsion controller uses a single operation unit to activate remote ECUs and start all outboard motors simultaneously.

Integrated fins with cutting blades protect propellers from underwater debris in work boat outboard drives.