Device and method for processing a signal of pressure...

Details Device and method for processing a signal of pressure... Device and method for processing a signal of pressure...

2006-06-21

2010-02-09

Nghiem, Michael P. (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

Reexamination Certificate

active

07660703

ABSTRACT:
A device for processing a signal of pressure measurement of an internal combustion engine combustion chamber. The device obtains, by a low-pass filter of the pressure measuring signal, a filtered signal, subtracts the filtered signal from the pressure measuring signal to obtain a difference signal, compares the difference signal to a predetermined threshold value, and determines a combustion starting time as a time at which the difference signal reaches the predetermined threshold value.

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English Abstract of Miyabe, JP 2004-102161, Feb. 2004.

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