Method and apparatus for engine analysis by waveform comparison
First Claim
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1. Apparatus for analysis of engines and/or other rotary machines comprising:
- a) input means to provide an input signal related to an available characteristic of the operation of a rotary machine;
b) signal value comparison means coupled to said input means to effect electronic comparison of said input signal with a corresponding template signal; and
c) means to adapt the template signal in accordance with progressive changes in the input signal.
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Abstract
A method and apparatus for analysis of engines analyzes digitized input signals from, for example, engine injectors and compares this digital data with the corresponding values of a digitized template or comparison signal. Compliance or divergence between the digitized signal values is indicated in bar graph form.
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Citations
27 Claims
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1. Apparatus for analysis of engines and/or other rotary machines comprising:
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a) input means to provide an input signal related to an available characteristic of the operation of a rotary machine; b) signal value comparison means coupled to said input means to effect electronic comparison of said input signal with a corresponding template signal; and c) means to adapt the template signal in accordance with progressive changes in the input signal.
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2. Apparatus for analysis of engines and/or other rotary machines comprising:
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a) input means to provide an input signal related to available characteristic of the operation of a rotary machine; b) signal value comparison means adapted to effect electronic comparison of the input signal with a corresponding template signal; and c) indicator means to generate an indication of compliance or divergence of the input and template signals, said indicator means including bar graph generation means to display the degree of compliance or divergence in bar graph form.
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3. Apparatus for analysis of engines and/or other rotary machines comprising:
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a) input means to obtain an analog input signal related to a variable characteristic of the operation of a rotary machine; b) analog-to-digital conversion means coupled to said input means for converting the analog input signal to a digitized input signal; c) signal analysis means coupled to said conversion means to analyze said digitized input signal to determine information relating to the variable characteristic; d) said analysis means including signal comparison means adapted to effect electronic comparison of a digitized input signal with a corresponding prestored digitized template signal; and e) indicator means adapted to generate an indication of compliance or divergence of the input and template signals. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of analysis of engines and other rotary machines comprising:
- comparing an input signal related to a variable characteristic of the operation of a rotary machine with a corresponding template signal, and progressively adapting the template signal in accordance with progressive changes in the input signal.
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16. A method of analysis of engines and other rotary machines comprising:
- providing an input signal related to a variable characteristic of the operation of a rotary machine, comparing the input signal with a corresponding template signal, and generating an indication of compliance or divergence of said signals, said compliance or divergence being indicated in bar graph form.
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17. A method of analysis of engines and/or other rotary machines comprising:
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a) providing an analog input signal related to a variable characteristic of the operation of a rotary machine; b) digitizing the analog input signal to provide a digitized input signal; c) electronically comparing the digitized input signal with a corresponding pre-stored digitized template signal; d) determining the degree of compliance or divergence between the digitized input signal and the digitized template signal; and e) generating an indication of compliance or divergence of said signals. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification