Propulsion Power Plants TRIZ Cases

A keyless controller assigns unique identification numbers to outboard motor engine control modules during initial registration.

A segmented intake duct with thermal insulation separates water from air while convection cooling reduces temperature.

Offset hydraulic cylinder unit in outboard motor steering apparatus avoids actuator housing interference with pod side walls during tilting.

Sensors trigger fracturing devices to separate propeller extensions, reducing hull damage from submerged object collisions.

Skegs produce opposing lateral forces that neutralize driveshaft torque, reducing steering system load and enabling lighter components.

A marine propulsor pivot arm uses a fastener to lock the actuator in place during normal operation.

A pre-installed hose and valve drain residual oil from the engine drip tray to the gearcase, eliminating messy manual hose connections during maintenance.

Concentric dual propellers driven by separate electric motors reduce lateral forces and improve straight tracking while lowering energy consumption.

Bearing fixing mechanisms constrain gear shafts to prevent thrust loads from reaching the electric motor output shaft.

Segmented hydraulic discharge units increase flow rate to reduce tilt-up duration while switching unit maintains piston position without mechanical pushers.

Magnetic field sensing replaces mechanical linear conversion to prevent water intrusion in outboard engine steering assemblies.

A marine propulsion trim control system adjusts the unit angle based on engine speed to optimize hydrodynamic performance.

A low base number cylinder lubricant uses a composite detergent system to maintain engine cleanliness and wear protection.

Segmented lower cowling with a removable door and hidden fasteners provides manual rigging access while maintaining water resistance.

A two-stage contacting device manages power flow in outboard motors using a current-limiting element.

A disc-shaped underwater helicopter uses annular rim driving mechanisms and adjustable paddles to generate directional thrust.

A trolling motor mount uses a pivot shaft and spring-urged latch to secure the device in stowed or deployed positions.

Dynamic emergency response adjusts engine cutoff thresholds based on vessel speed to balance safety with operator comfort.

Positioning the shift actuator outside the cowl and lower case improves maintainability while reducing motor height.

A marine steering actuator uses a nested roller screw assembly to convert motor rotation into axial movement for precise rudder control.

Hydrophobic mesh and segmented passages reduce water content while minimizing air temperature rise in outboard engines.

A water jet propulsion boat integrates a power generator within the impeller flow path to harness kinetic energy for electrical storage.

Segmented acoustic barriers reduce motor noise by 9 decibels, resolving insufficient insulation in existing designs.

System stores speed-related magnitudes during water skier launches to replicate the exact throttle profile, eliminating manual control variability.

Clamping plates apply consistent compression to vibration dampening seals, resolving hull thickness variations while ensuring watertight integrity.

A trim and tilt device rod guide uses a stepped configuration to reduce sliding pressure on the piston.

Relocating the downstream collecting passage outside cylinder heads reduces pressure loss and improves engine output.

A tilt and lift jack plate uses hydraulic cylinders to adjust outboard motor orientation and vertical position.

Counter-rotating propellers in a gearless pod recover swirling energy from the lead propeller wake, eliminating gear losses and boosting efficiency.

Segmented engine cover and vertical intake ducts separate water from air, reducing intake temperature while simplifying assembly operations.

Width-direction reinforcing ribs boost rigidity without adding weight, solving the trade-off between structural strength and mass in large outboard motors.

Nesting the eccentric water pump shaft inside the drive shaft reduces outboard motor vertical size while maintaining cooling capacity.

A boat engine control unit remains powered on after engine stoppage to accept operator input commands.

Silencing chamber with hole member reduces intake noise in outboard motors without increasing lateral width.

An intermediate framework groups the drive assembly and actuator to shorten cable runs and eliminate hydraulic lines, resolving mechanical complexity.

A U-shaped friction plate with reduced spring constant stabilizes outboard motor steering load by preventing one-sided contact under heavy loads.

An integrated cooling water circuit exchanges heat with a hydraulic actuator in an outboard motor transmission, preventing overheating of shift components.

A jack plate assembly uses a rotating adjusting bolt to raise or lower the motor plate for outboard engine mounting.

A compact outboard motor mounting device integrates a nested lift cylinder to reduce structural complexity and corrosion risks.

A marine propulsion unit uses multiple motors linked by a transmission to drive a jet pump impeller.

A portable trolling motor power system integrates rechargeable batteries within the motor housing for secure mounting and easy removal.

A sliding car mechanism deploys a self-contained thruster unit along a guide device to the waterline.

A marine propulsion device pivots to an optimal trim angle when reverse thrust is requested.

A trolling motor control system synchronizes foot pedal position with propulsion shaft alignment via electronic signals.