Propulsion Power Plants TRIZ Cases

Controller adjusts rotating shaft inertia and speed to generate inertial force against boat sway, eliminating large gyroscopes.

A guide member directs lubricating oil to the inner wall of an outboard motor oil pan, reducing condensation while maintaining cooling performance.

A hydraulic flow control device regulates fluid volume to maintain constant cylinder lowering speed during marine propulsion trim operations.

A portable storage apparatus secures a trolling motor upright using a base cradle and stabilizing arm to prevent slippage.

Resilient gimbal and driveshaft isolators absorb vibration forces, protecting the mounting structure from damage while maintaining vessel stability.

Segmented autopilot architecture compensates for wind and wave drift to maintain precise navigation accuracy.

A trolling motor uses a linear actuator to rotate the shaft assembly for automated positioning.

An extendable driveline mount adjusts propeller depth to resolve the contradiction between deep water efficiency and shallow water damage resistance.

A movable outboard motor deck sits above the electric motor body to utilize vertical space on a ship hull.

Fixing the shift shaft rotating mechanism to the exhaust guide eliminates positional variation and reduces bending stress on the shift arm.

Segmented mounts with elasticity reduce vibration transmissibility while maintaining posture holding force for the outboard motor.

Second drive shaft supported by upper and lower bearings positioned relative to driven gear.

Retrofit system with isolating power-take-off shaft and closed-loop cooling enables outboard motor operation in shallow, muddy, or corrosive waters.

Independent propulsion unit control reduces cavitation and engine noise by maintaining continuous thrust delivery while lowering rotational speeds.

Rotating grill bars double spacing to dislodge rocks from the jet intake without stopping the outboard motor.

A seal member couples separate intake pipe portions without bosses to maintain a wider flow pathway.

A segmented outboard motor cover separates protection and access functions to streamline engine inspection.

A removable nosecone enables sonar upgrades without increasing drag, resolving the trade-off between device versatility and structural complexity.

A thruster motor integrates a coupling arrangement within a recessed stator body to reduce the dry portion height.

A nested cylinder trim tilt apparatus uses independent pistons to manage hydraulic pressure.

Staggered pump gears feed operating fluids at distinct timings, reducing synchronized pulsation noise and improving operational stability.

Control device detects operator absence, switches to autonomous mode, and returns watercraft to reduce manual retrieval burden.

Electromechanical lockout device prevents reverse gear engagement during high-speed marine vessel operation, reducing hydro-lock risk.

Controller compares control states in input device and internal storage, then writes matching values to prevent engine misoperation after component replacement.

A buoyant clearing tool with a flexible rod navigates narrow telltale paths on outboard motors.

An aftwardly positioned trim axis allows the actuator to pivot the cradle upward, preventing collisions with the transom well.

A self-righting unmanned ship hull uses a watertight deck and electromagnet-controlled vents to maintain operational integrity in adverse sea conditions.

Electric power steering replaces hydraulic systems to eliminate fluid leaks and reduce operator fatigue during low-speed docking maneuvers.

A computer monitors tilt status data from sensors to detect outboard motor actuator malfunctions early.

A boat propulsion system coordinates four independently controllable units to enable lateral movement.

Dynamic coolant channel adjustment eliminates fixed annular structures, reducing weight and improving layout flexibility.

Segmented hydraulic circuits with bypass valves isolate malfunctioning outboard motors, preventing steering interference and preserving vessel maneuverability.

Integrating shift, oil, and water pumps into a detachable module reduces drive shaft to pilot shaft distance, improving steering performance.

A syphon conduit removes cooling water from outboard marine engines using gravity and siphon force.

A marine remote control unit positions tilt-trim switches on the top surface for fingertip operation.

Rake angles on trailing faces retain the dog clutch against rapid deceleration forces, preventing disengagement from the bevel gear.

A control system monitors electric motor parameters to determine reduced operation limits and prevent catastrophic failure in marine propulsion.

Automated processor adjusts watercraft parameters during bites, reducing manual response delays that risk losing the catch.

A water jet propulsion boat adjusts forward and backward thrust ratios using a third operation element to enable precise low-speed movement.

Integrated copilot and locking mechanism retains outboard motor steering orientation, reducing user error and damage during manual transport.

Segmenting the propulsion and battery units allows hull-mounted power placement, reducing outboard weight for easier boat storage.

Introducing dry inert gas into marine thruster lubrication gas cavities displaces humid air and prevents water condensation in the oil.

A vessel propulsion control device synchronizes engine rotational speeds by correcting throttle openings based on speed deviations.

Sloped peripheral wall lifts oil to gear bearings via rotation momentum, resolving insufficient lubrication at low oil levels.

Dual louvers separate water from combustion air using inertial impaction and gravity, eliminating salt clogging in outboard motors.

A vessel display system automatically transitions screens between autopilot and berthing modes based on proximity to the destination.

A rotational element with a thixotropic balancing substance distributes along a circumferential area to minimize vibration in watercraft rotary systems.

A flexible synthetic resin bush fills the gap between a propeller boss and gear case, preventing exhaust gas leakage while accommodating shaft swing.

Unibody injection molded plastic diverter eliminates heavy metal components, reducing weight while maintaining hose pivoting capability.

Mounting the propulsion unit at a 1 to 8 degree vertical tilt angle improves water inflow, reduces cavitation noise, and extends bearing lifespan.