Method for controlling the primary ignition current of an...

Details Method for controlling the primary ignition current of an... Method for controlling the primary ignition current of an...

2005-04-26

2005-04-26

Miller, Carl S. (Department: 3747)

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

C123S609000, C073S117020

Reexamination Certificate

active

06883508

ABSTRACT:
Method for controlling a primary current in an ignition coil of an internal combustion engine with controlled ignition, the current is established in an inductive primary circuit over a given conduction time. The conduction time is calculated by:predetermining the predetermined conduction time,carrying out at least one measurement of the current in the primary circuit at an instant lying in the last tenth of the predetermined conduction time;estimating the current at the end of the predetermined conduction time, as a function of the measurement(s) carried out;optionally correcting the conduction time for the ignition cycle during which the last current measurement was carried out, as a function of the previous estimate and the current desired at the end of the conduction time.

REFERENCES:
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patent: 5735254 (1998-04-01), Palara et al.
patent: 6204693 (2001-03-01), Forster et al.
patent: 6729317 (2004-05-01), Kraus
patent: 0 559 540 (1993-09-01), None
patent: 0 590 181 (1994-04-01), None
patent: 2 820 465 (2002-08-01), None

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