Method for determining a concentration of alcohol in a fuel mixture
First Claim
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1. A method for determining a concentration of alcohol in a fuel mixture, comprising:
- ascertaining a characteristic curve for a parameter describing dynamics of an injector, by which the fuel mixture is injected in an internal combustion engine; and
determining the concentration of alcohol in light of a course of the characteristic curve.
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Abstract
A method for determining a concentration of alcohol in a fuel mixture, where a characteristic curve for a parameter describing the dynamics of an injector, by which the fuel mixture is injected in an internal combustion engine, is ascertained; and where the concentration of alcohol is determined in light of a course of the characteristic curve. The invention also relates to a method for operating an internal combustion engine and a system for determining a concentration of alcohol in a fuel mixture.
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11 Claims
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1. A method for determining a concentration of alcohol in a fuel mixture, comprising:
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ascertaining a characteristic curve for a parameter describing dynamics of an injector, by which the fuel mixture is injected in an internal combustion engine; and determining the concentration of alcohol in light of a course of the characteristic curve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating an internal combustion engine which burns a fuel mixture that contains a portion of alcohol, the method comprising:
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determining a concentration of alcohol in a mixture including ascertaining a characteristic curve for a parameter describing dynamics of an injector, by which the fuel mixture is injected in an internal combustion engine, and determining the concentration of alcohol in light of a course of the characteristic curve; and adjusting at least one operating parameter of the internal combustion engine as a function of a concentration of alcohol in the fuel mixture.
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10. A system for determining a concentration of alcohol in a fuel mixture, the system comprising:
a module configured to ascertain a characteristic curve for a parameter describing dynamics of an injector, by which the fuel mixture is injected in an internal combustion engine, the module also being configured to determine the concentration of alcohol in light of a course of the characteristic curve. - View Dependent Claims (11)
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