Ship Engine RPM Control Server for Adaptive Speed Commands

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Solution Overview

Problem

It is challenging to dynamically control the revolutions per minute (RPM) of a ship's engine due to its weight and buoyancy properties, making it difficult to introduce innovative control systems that can change engine speed efficiently.

Innovation Solution

A control server is installed on the ship to select a different RPM based on detected inputs, receive condition information, and determine suitability before transmitting a control command, compatible with the existing control system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a new control system is introduced to dynamically change engine speed, then operational efficiency is improved, but device complexity and installation costs increase

Engineering Contradiction:
Improveoperational efficiencyVSAvoidcontrol system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The control server is designed to perform multiple functions: it monitors engine RPM, receives driver inputs, determines suitability of RPM changes, and transmits control commands. By consolidating these functions into a single multi-functional device, the system improves operational efficiency without proportionally increasing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The control server acts as an intermediary between the driver's input and the engine's control system. It receives the desired RPM input, evaluates suitability based on current operating conditions, and only then transmits the control command to the engine. This intermediary approach enables intelligent RPM management while maintaining compatibility with existing control systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If RPM control functionality is added to the existing control system, then adaptability is improved, but device complexity increases

Engineering Contradiction:
ImproveRPM control adaptabilityVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control system is segmented into distinct functional modules: an input unit for receiving driver commands, a determination unit for evaluating suitability, and a transmission unit for sending control commands. This segmentation allows the new RPM control functionality to be added as a separate module rather than integrating it throughout the entire control system, thereby improving adaptability while minimizing increases in overall complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The control server performs preliminary assessment of whether an RPM change is suitable before actually executing the control command. By pre-evaluating operating conditions and determining suitability in advance, the system adds adaptive RPM control functionality without requiring complex real-time decision-making throughout the entire control system.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4699926A2Method for controlling RPM of ship engine on basis of control server and control server therefor
Publication Date: 2026.02.25 AVIKUS CO LTD
  • EP4699926A2 patent drawingFigure 1
  • EP4699926A2 patent drawingFigure 2
  • EP4699926A2 patent drawingFigure 3

AI summary

An embodiment of the present disclosure discloses a method of controlling a revolutions per minute (RPM) of an engine of a ship based on a control server.