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Title:
OPERATION CONDITION LEARNING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2004225555
Kind Code:
A
Abstract:

To provide a fuel injection learning control device for an internal combustion engine capable of reflecting this time final learning value calculated in learning control in a calculation of a target driving current value impressed on a solenoid coil of SCV without performing excessive and complicated control.

In the learning control for learning and correcting the functional deterioration (performance reduction) of the SCV by an individual difference and a change with the lapse of time of the SCV, this time temporary learning value is calculated to be reflected in the calculation of the target driving current value impressed on the solenoid coil of the SCV, and afterwards, a value of adding last time learning value and this time learning value is calculated as this time final learning value. However, in this time operation switched to an ordinary control condition from a learning control condition, this time final learning value calculated in the learning control is not immediately reflected in the calculation of the target driving current value impressed on the solenoid coil of the SCV, and when stopping an engine, this time final learning value is only stored in a memory such as EEPROM instead of the last time learning value.


Inventors:
FUKUSHIMA TAKAYUKI
ISHIZUKA KOJI
Application Number:
JP2003011037A
Publication Date:
August 12, 2004
Filing Date:
January 20, 2003
Export Citation:
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Assignee:
DENSO CORP
International Classes:
F02M47/00; F02D31/00; F02D41/00; F02D41/04; F02D41/06; F02D41/14; F02D41/24; F02D41/38; F02D45/00; F02M55/02; F02M59/34; (IPC1-7): F02D45/00; F02D41/04; F02D41/06; F02M47/00; F02M55/02; F02M59/34
Attorney, Agent or Firm:
Kenji Ishiguro