Driver circuit for an ion measurement device

Details Driver circuit for an ion measurement device Driver circuit for an ion measurement device

2008-05-20

2008-05-20

McCall, Eric S. (Department: 2855)

Measuring and testing

Engine detonation

Specific type of detonation sensor

C073S117020

Reexamination Certificate

active

10868366

ABSTRACT:
A driver circuit is described for an ion measuring device associated with a cylinder of a diesel engine for the measurement of the conductivity of the combustion gas present in the cylinder, wherein a negative voltage can be applied by the driver circuit to a glow plug serving as a sensor and associated with the cylinder for a respective ion measurement. The negative voltage is generated by a capacitor which is correspondingly charged each time the glow plug is switched off via the magnetic energy stored in the internal inductance of the glow plug.

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patent: 2005/0092287 (2005-05-01), Tozzi et al.
patent: 2007/0247164 (2007-10-01), Bengtsson
patent: 1113170 (2001-07-01), None
patent: 1164286 (2001-12-01), None
patent: 1233177 (2002-08-01), None
patent: 2675206 (1992-10-01), None
EP Search Report dated Nov. 27, 2003.

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