Marine Auxiliary Propulsion Tilt Control for Direction Stability
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Solution Overview
Problem
Existing marine propulsion systems with auxiliary propulsion devices attached to one side of the hull's centerline in the right-left direction experience a decrease in direction maintenance performance and require manual operations to manage the auxiliary propulsion device's position, affecting operability.
Innovation Solution
A marine propulsion system with a remote control lever and controller that automatically tilts the auxiliary propulsion device up or down based on the state of the main propulsion device, using joystick mode or automatic operation modes to reduce resistance and improve operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the auxiliary propulsion device is attached to one side of the centerline of the hull, then the maneuverability of the marine vessel is improved, but the direction maintenance performance decreases due to resistance acting on one side
Solution Approach 1:
The auxiliary propulsion device is equipped with a tilt mechanism that enables dynamic adjustment of the propeller position between water-submerged and water-emergent states. This dynamic positioning allows the system to adapt between maneuvering mode (propeller in water) and straight航行 mode (propeller out of water), resolving the contradiction between maneuverability and direction maintenance performance
2Stability of the object's composition
If the screw of the auxiliary propulsion device is placed above the water surface in advance, then the direction maintenance performance is improved, but the operability decreases due to requiring predetermined operations
Solution Approach 1:
The system automatically controls the tilt mechanism based on detected航行 state, eliminating the need for manual intervention. The auxiliary propulsion device self-adjusts its position according to whether the vessel is maneuvering or maintaining straight course, thereby improving operability while maintaining direction stability
3Stability of the object's composition
If the auxiliary propulsion device body is tilted up automatically when switching from neutral state to forward movement state, then the operability is improved and direction maintenance performance is enhanced, but the device complexity increases
Solution Approach 1:
The control system continuously monitors the航行 state through the remote control lever position and automatically adjusts the auxiliary propulsion device tilt angle accordingly. This feedback mechanism enables automatic adaptation to航行 conditions, improving both operability and direction maintenance while managing complexity through integrated control logic
Data Source
AI summary
A marine propulsion system includes a main propulsion device including a main thruster, an auxiliary propulsion device to be attached to a stern on one side of a centerline of a hull in a right-left direction and including an auxiliary thruster, and a remote control lever to switch between a neutral state, a forward movement state, and a reverse movement state. The auxiliary propulsion device further includes a tilt device to tilt up and tilt down an auxiliary propulsion device body, and is operable to tilt up the auxiliary propulsion device body with the tilt device when the main propulsion device is switched from the neutral state to the forward movement state by the remote control lever while the auxiliary propulsion device body is tilted down.