Propulsion Power Plants TRIZ Cases

Steering and trimming marine drive units clears cowling blind spots behind the vessel, giving image sensors a more complete rear view.

Guiding protrusions and a pivoted mounting structure enable underwater tilted installation of propulsion units without damaging hull seals.

An oil circulation path inside the pod housing cools steering and drive parts, cutting drag, pipe complexity, and seawater intake maintenance.

Selective power cut-off and idle control reduce residual thrust so large marine vessels decelerate accurately without overshooting target positions.

A single rotatable input adjusts marine trim tabs for roll or pitch changes, cutting operator workload without costly sensors.

Leader-follower shift coordination synchronizes multi-speed marine transmissions to cut NVH while preserving conditional independent operation.

A steerable rear drive and fixed bow lateral drive restore sway and yaw control, enabling full joystick maneuvering on single-drive vessels.

Power-based shift thresholds coordinate multi-speed marine transmissions across propulsion devices to improve fuel use and reduce noise and vibration.

A single rotatable input controls marine trim tabs without angular sensors, improving roll and pitch adjustment reliability in rough water.

Adaptive throttle gain switching based on speed deviation stabilizes ship speed while limiting harsh control actions that affect ride quality and safety.

A partitioned gearcase and flow paths keep opposing bevel-gear oil streams apart, cutting drive torque loss and improving transmission efficiency.

A damper lets the input shaft rotate near neutral while motor-assisted shifting overcomes cable friction and preserves manual operation during faults.

Differential trim of outer and inner marine drives induces inward roll in multi-hull turns without canted mounts or added wear.

Internal routing through the clamp and swivel brackets keeps outboard motor wiring protected, reducing foreign matter catching and maintenance.

Pivoting suction pipes and gravity-actuated valves keep lube oil flowing and pressure stable during extreme vessel roll and list.

Adjustable lifting screws maintain belt tension and shaft alignment in marine propulsion while avoiding idler pulley friction and drag.

A controller adjusts vessel heading during station keeping to cut gyroscopic control torque, reducing energy use while preserving stability.

A table-based controller links lure or fish selection to target speed, giving marine vessels precise low-speed trolling control.

Independent thrust elevation and azimuth control uses propulsion units to estimate and suppress vessel pitch and roll with less added hardware.

Requested-versus-actual speed error triggers marine transmission downshifts when shift schedules lag, improving boat response and fuel use.

Restricting speed mode changes during engine and propulsion speed shifts helps marine vessels avoid temporary fluctuations and stabilize control.

Preliminary bow-speed deceleration counters vessel inertia before dynamic positioning, reducing target and route deviations.

One-switch control matches multiple outboard motors to a reference engine speed, reducing manual adjustment and improving vessel sound quality.

Automatic steering keeps a sonar target within the coverage volume as the watercraft moves, reducing manual adjustment and missed fish.

By predicting wave motion and cutting propulsion before a crest, this case reduces hull impact and improves crew comfort in rough seas.

During auto-to-manual cruise switching, deceleration control aligns engine speed with lever position to avoid sudden ship speed changes.

Torque feedback detects propeller faults and redistributes thrust to keep a semi-submersible offshore platform on station.

Guided protrusions and a pivoted interface enable underwater propulsion unit mounting on tilted hull surfaces without damaging seals.