FUEL INJECTION AMOUNT LEARNING AND CONTROLLING METHOD

Title:

FUEL INJECTION AMOUNT LEARNING AND CONTROLLING METHOD

Document Type and Number:

WIPO Patent Application WO/2007/086199

Kind Code:

A1

Abstract:

A fuel injection amount learning and controlling method capable of learning the amount of fuel injection independent of whether accessories are operated or not and without being affected by environmental conditions such as coolant temperature. The fuel injection amount learning and controlling method obtains, using an idle injection amount standard value as the standard, a fuel injection amount learning value so that the speed of an internal combustion engine (1) is a target idle speed. The method has a learning correction function that obtains in advance a relationship between load by accessories (3, 4) driven by the engine (1) and a fuel injection incremental amount that is due to the load imposed by the accessories (3, 4) and is relative to a no-load condition as the standard. To obtain the fuel amount learning value, the learning correction function measures the load by the accessories (3, 4), derives a fuel injection incremental amount relative to the measured load, and corrects the idle injection amount standard value by using the incremental amount.

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Inventors:

YAMAGUCHI KAZUMI (JP)

Application Number:

PCT/JP2006/324563

Publication Date:

August 02, 2007

Filing Date:

December 08, 2006

Export Citation:

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Assignee:

ISUZU MOTORS LTD (JP)
YAMAGUCHI KAZUMI (JP)

International Classes:

F02D29/04; F02D41/04; F02D41/16; F02D41/38; F02D45/00

Foreign References:

JP2004011511A	2004-01-15
JPH11173191A	1999-06-29
JP2001098986A	2001-04-10
JP2004011511A	2004-01-15
EP1375888A2	2004-01-02
US5934248A	1999-08-10

Other References: