METHOD FOR DETERMINING THE COMPOSITION OF THE FUEL USED TO OPERATE AN INTERNAL COMBUSTION ENGINE
An example method for operating an internal combustion engine may include: measuring pressure oscillations for a cylinder in the inlet tract at a defined operating point during normal operation; generating a corresponding oscillation signal; determining a crankshaft phase angle corresponding to the...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
24.06.2020
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Subjects | |
Online Access | Get full text |
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Summary: | An example method for operating an internal combustion engine may include: measuring pressure oscillations for a cylinder in the inlet tract at a defined operating point during normal operation; generating a corresponding oscillation signal; determining a crankshaft phase angle corresponding to the oscillation signal; and from the pressure oscillation signal, using discrete Fourier transformation to calculate the actual phase position of a selected signal frequency; determining a further comparison phase position in the same way from the selected signal frequency in the absence of fuel injection; calculating an actual phase position difference; on the basis of the difference, taking into consideration reference phase position differences of the same signal frequency for different fuel compositions, to identify a fuel composition of the presently used fuel; and adapting operating parameters of the engine based on the identified composition. |
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Bibliography: | Application Number: EP20160801237 |