Ship Fuel Oil Blending Control for Safe Engine Fuel Switching
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Solution Overview
Problem
The challenge of switching between different types of fuel oils in a marine engine, such as HFO, MGO, and MDO, is complicated by their varying chemical and physical characteristics, leading to potential engine damage from sudden temperature changes during blending, and prolonged switching increases the consumption of expensive fuels like MGO or MDO.
Innovation Solution
A system and method for switching fuel oils using a supply unit, circulation unit, and controller to regulate the blended ratio of different fuel oils, incorporating temperature and viscosity sensors, heaters, and coolers to maintain optimal viscosity and temperature conditions, with automated control to minimize time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ship fuel oil is stored in separate tanks and switched using manual or automated systems, then fuel quality can be maintained, but the system complexity and operational time increase
Solution Approach 1:
The patent combines multiple fuel oil tanks into a single mixed storage tank, eliminating the need for separate tanks and complex switching systems. This merging approach maintains fuel quality by preventing contamination while simplifying the storage system structure and reducing operational complexity.
Solution Approach 2:
The single mixed storage tank serves multiple functions that previously required separate tanks: storing different types of fuel oil, preventing contamination through design features, and enabling direct supply to the engine. This multi-functional design eliminates the need for complex tank switching mechanisms.
2Reliability
If automated switching systems are used to manage fuel oil tanks, then fuel quality control improves, but the cost and system complexity increase
Solution Approach 1:
By merging multiple tanks into one mixed storage tank with contamination prevention features, the system achieves automated fuel quality control without requiring expensive automated switching mechanisms, sensors, and control systems associated with multiple tank management.
Solution Approach 2:
The mixed storage tank design incorporates self-contained contamination prevention features that automatically maintain fuel quality without requiring external automated monitoring or control systems, thereby reducing overall system cost while maintaining reliability.
3Adaptability or versatility
If multiple fuel tanks are used with switching mechanisms, then fuel flexibility is maintained, but the time required for fuel switching increases
Solution Approach 1:
The single mixed storage tank eliminates fuel switching time by providing a continuous supply of mixed fuel oil directly to the engine. Fuel flexibility is maintained through the ability to mix different fuel types in appropriate proportions within the single tank, avoiding the need for time-consuming switching operations.
Data Source
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AI summary
Disclosed is a ship fuel oil switching system for switching a type of fuel oil, which has been used as fuel for an engine, to another type of fuel oil as fuel for the engine. The ship fuel oil switching system comprises: a supply portion for supplying fuel oil; a circulation portion for receiving fuel oil from the supply portion and circulating the same; and a control portion for controlling the supply portion and the circulation portion. The supply portion comprises multiple tanks for storing different types of fuel oil. The engine receives fuel oil from the circulation portion. Fuel oil that remains after being used by the engine is recirculated through the circulation portion. The control portion controls the flow rate of fuel oil discharged from each of the multiple tanks, thereby adjusting the mixing ratio of fuel oil sent to the engine.