Ship efficiency analyzer
First Claim
1. In a power plant having at least one main power transmitting drive shaft, a power plant efficiency monitoring system comprising:
- RPM sensor means for sensing the rpm'"'"'s of said drive shaft;
torque sensing means for sensing the torque transmitted by said drive shaft;
fuel flow sensing means for sensing the rate of fuel supplied to said power plant;
first calculation means for calculating fuel use of said power plant in terms of power transmitted by said drive shaft;
display means for displaying said sensed rpm, said second torque, and said calculated fuel use in terms of power transmitted;
storage means for storing indications of said calculated fuel use in terms of power transmitted;
secondary sensor means for measuring levels of internal parameters of said power plant; and
means for storing said measured levels of said internal parameters and correlating changes in said internal parameters with changes in said calculated fuel use in terms of power transmitted.
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Accused Products
Abstract
A system for indicating the presence of fuel penalties brought on by inefficient power plant components or degradation in performance of components. The system is adapted for use especially in marine applications and includes strategically located continuous operating sensors, the information from which is sampled and analyzed to produce an output representative of the plant efficiency at that moment. The outputs include indications of fuel use per hour, fuel consumption per distance traveled, and power plant efficiency. A plurality of secondary inputs are provided giving indications of the plant operating pressures, temperatures, etc. When a fuel penalty is indicated, the secondary inputs are evaluated to determine any significant change in output levels thus giving evidence as to the location of the source of the fuel penalty.
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Citations
10 Claims
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1. In a power plant having at least one main power transmitting drive shaft, a power plant efficiency monitoring system comprising:
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RPM sensor means for sensing the rpm'"'"'s of said drive shaft; torque sensing means for sensing the torque transmitted by said drive shaft; fuel flow sensing means for sensing the rate of fuel supplied to said power plant; first calculation means for calculating fuel use of said power plant in terms of power transmitted by said drive shaft; display means for displaying said sensed rpm, said second torque, and said calculated fuel use in terms of power transmitted; storage means for storing indications of said calculated fuel use in terms of power transmitted; secondary sensor means for measuring levels of internal parameters of said power plant; and
means for storing said measured levels of said internal parameters and correlating changes in said internal parameters with changes in said calculated fuel use in terms of power transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification