Title:
FUEL INJECTION QUANTITY CONTROL DEVICE AND FUEL INJECTION QUANTITY CONTROL METHOD
Document Type and Number:
Japanese Patent JP2007262962
Kind Code:
A
Abstract:
To provide a fuel injection quantity control device preventing deterioration of a three-way catalyst and improving fuel economy by controlling air fuel ratio at target air fuel ratio even during fuel increase.
This device is provided with an engine ECU 12 performing correction of compensation value when fuel injection quantity is controlled with using compensation value during fuel increase and actual air fuel ratio after fuel increase separates from target air fuel ratio by a predetermined value or more. Accordingly, air fuel ratio can be controlled even during fuel increase and deterioration of a three-way catalyst can be prevented and fuel economy can be improved.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
MATSUMOTO HIROSHI
Application Number:
JP2006088132A
Publication Date:
October 11, 2007
Filing Date:
March 28, 2006
Export Citation:
Assignee:
FUJITSU TEN LTD
International Classes:
F02D41/14; F02D45/00
Attorney, Agent or Firm:
Shuhei Katayama
Teruo Yokoyama
Teruo Yokoyama