Coriolis Fuel Meter Feedback for Marine Fuel Viscosity Control
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Solution Overview
Problem
Fuel viscosity control in marine engines is challenging due to high viscosity of heavy fuel oils (HFOs) and heat loss along fuel supply lines, which can result in inappropriate fuel viscosity for injectors, affecting engine performance.
Innovation Solution
A method and system using a Coriolis flow meter to measure fuel density, generate signals for temperature control, and adjust fuel temperature based on viscosity-density relationships to maintain optimal viscosity for fuel injectors, compensating for heat loss in fuel lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If fuel is heated at the fuel source location, then fuel viscosity is reduced, but heat loss along long fuel supply lines causes viscosity to increase again before reaching the engine
Solution Approach 1:
The system uses a Coriolis flow meter to continuously measure fuel density, which correlates with viscosity, and feeds this information back to the temperature control unit. This closed-loop feedback enables real-time adjustments to heating power, compensating for heat loss along fuel lines and maintaining optimal viscosity at the engine despite varying environmental conditions.
Solution Approach 2:
The system changes the heating parameter dynamically based on measured fuel density. By adjusting the heating power level according to real-time density measurements, the system adapts to varying heat loss conditions along the fuel supply line, maintaining appropriate fuel viscosity for injection.
2Adaptability or versatility
If fuel supply lines are made longer to reach distant engines, then fuel can be supplied to more locations, but heat loss increases causing viscosity to become inappropriate for injectors
Solution Approach 1:
The density measurement feedback from the Coriolis flow meter allows the temperature control system to compensate for increased heat loss in longer fuel supply lines. The system adjusts heating power based on actual fuel properties at the measurement point, ensuring appropriate viscosity regardless of supply line length or environmental conditions.
3Adaptability or versatility
If environmental conditions around fuel lines vary, then system operates in diverse conditions, but cooling rates vary significantly causing viscosity to become unpredictable
Solution Approach 1:
By continuously measuring fuel density with the Coriolis flow meter and using this feedback to adjust heating power, the system compensates for varying cooling rates caused by changing environmental conditions. This real-time adaptation maintains precise viscosity control despite external temperature variations, wind, or other environmental factors.
Solution Approach 2:
The system uses the fuel's own density measurement to determine the appropriate heating level needed. The temperature control unit automatically adjusts heating power based on the measured density, allowing the system to self-regulate and maintain appropriate viscosity without external intervention or complex environmental sensing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures that the fuel viscosity is accurately controlled and maintained within a suitable range for fuel injectors, enhancing engine performance by compensating for heat loss and varying environmental conditions.
Implementation Method 1
measuring a density of the fuel with a Coriolis flow meter
Implementation Method 2
controlling the engine viscosity of the fuel, using the temperature control unit, by controlling the temperature of the fuel
Data Source
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AI summary
A method of controlling a viscosity of fuel in a fuel control system with a vibratory meter is provided. The method includes providing the fuel to the vibratory meter, measuring a property of the fuel with the vibratory meter, and generating a signal based on the measured property of the fuel. The method also includes providing the signal to a temperature control unit configured to control the temperature of the fuel provided to the vibratory meter.