Detecting ionization signal for HCCI engines using a dual...

Details Detecting ionization signal for HCCI engines using a dual... Detecting ionization signal for HCCI engines using a dual...

2008-09-30

2010-10-26

Allen, Andre J (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Electrical system

Reexamination Certificate

active

07818998

ABSTRACT:
Disclosed is a way to detect ionization within a cylinder of an internal combustion engine where the engine selectively operates in either a spark ignition mode or a HCCI mode. A single ionization detector circuit adapts in response to a control input to alter its bias voltage and its gain to selectively enable effective detection of ionization for each of two different operational modes of an internal combustion engine.

REFERENCES:
patent: 2004/0085070 (2004-05-01), Daniels et al.
patent: 2007/0186902 (2007-08-01), Zhu et al.
patent: 2009/0101114 (2009-04-01), Czekala et al.

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