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AssigneeFord Global Technologies, LLC
InventorsDavid James Scholl, Urs Christen
Estimating the term…
The invention relates to a method for detecting the start of combustion in the combustion chamber of an engine with autoignition. In the method, the profile of the cylinder pressure is measured and the signal which is obtained in this way is transformed using wavelet functions. A sudden rise in the absolute value of the wavelet coefficients which are obtained indicates the start of combustion. The simple and at the same time precise detection of the start of combustion which is possible in this way can be used within the framework of a feedback regulation—by changing engine operating parameters such as, for example, the start of injection of the fuel—to regulate the start of combustion in a desired way.
A method for detecting the start of combustion in a combustion chamber of an internal combustion engine with autoignition, with a cylinder pressure signal being generated, the method comprising:
A system for detecting a tart of combustion in a combustion chamber of an internal combustion engine comprising:
A computer readable storage medium having stored data representing instructions executable by a computer to control an internal combustion engine having at least one cylinder in which pressure is measured to provide a cylinder pressure signal, comprising:
A method for regulating the start of combustion in a combustion chamber of an internal combustion engine, the method comprising:
Dependencies are inferred from the claim text.