Method of fuel quality determination
First Claim
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1. A method of determining fuel quality in an internal combustion engine comprising the steps of:
- a) sampling a signal representative of the revolution speed of said engine during a sampling window, thereby obtaining an array of samples;
b) computing a Fourier component corresponding to a predetermined index in the frequency domain and determining a fuel quality indicator therefrom; and
c) deciding on the opportunity of taking corrective measures based on said fuel quality indicator;
wherein said fuel quality indicator is representative of a magnitude of said Fourier component of said predetermined index.
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Abstract
A method of determining fuel quality in an internal combustion engine comprises the steps of: a) sampling a signal representative of the revolution speed of said engine during a sampling window, thereby obtaining an array of samples; and b) computing a Fourier component corresponding to a predetermined index in the frequency domain and determining a fuel quality indicator therefrom. The fuel quality indicator is representative of a magnitude of the Fourier component of this predetermined index.
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16 Claims
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1. A method of determining fuel quality in an internal combustion engine comprising the steps of:
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a) sampling a signal representative of the revolution speed of said engine during a sampling window, thereby obtaining an array of samples; b) computing a Fourier component corresponding to a predetermined index in the frequency domain and determining a fuel quality indicator therefrom; and c) deciding on the opportunity of taking corrective measures based on said fuel quality indicator; wherein said fuel quality indicator is representative of a magnitude of said Fourier component of said predetermined index. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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