Fuel system injection timing diagnostics by analyzing...

Details Fuel system injection timing diagnostics by analyzing... Fuel system injection timing diagnostics by analyzing...

2011-02-01

2011-02-01

Kirkland, III, Freddie (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Relative rotational position

Reexamination Certificate

active

07878048

ABSTRACT:
A method for diagnosing combustion within an engine includes monitoring pressure cylinder pressure and generating a measured combustion phasing value for the cylinder at a predetermined metric selected to index the combustion cycle. The measured combustion phasing value is calculated through a Fast Fourier Transform and compared to an expected combustion phasing value.

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