Method and devices for the identification of various phases...

Details Method and devices for the identification of various phases... Method and devices for the identification of various phases...

2011-07-05

2011-07-05

McCall, Eric S (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Electrical system

C073S035080

Reexamination Certificate

active

07971476

ABSTRACT:
The present invention falls into the field of methods and devices for identifying the various phases of the ionization current during combustion in a cylinder of an internal combustion engine.The present invention develops over various phases comprising the measurement of the ionization current signal and the sampling of the signal within predetermined windows, with the subsequent identification of the sample signal which is preceded by a signal whose derivative has a positive value and followed by a signal whose derivative has a negative value.

REFERENCES:
patent: 4417556 (1983-11-01), Latsch
patent: 6032650 (2000-03-01), Rask
patent: 6089077 (2000-07-01), Daniels
patent: 7290442 (2007-11-01), Zhu et al.
patent: 2004/0084026 (2004-05-01), Zhu et al.
patent: 0 895 076 (1999-02-01), None
patent: 2 060 062 (1981-04-01), None
patent: WO 98/51922 (1998-11-01), None
patent: WO 2007/042091 (2007-04-01), None

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