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Title:
FUEL INJECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2010038001
Kind Code:
A
Abstract:

To provide a fuel injection control device capable of inhibiting the worsening of combustion at the start-up of an internal combustion engine.

An ECU 7 performs injection control of fuel by a PFI 21 for injecting fuel into an air inlet channel 5 and a DI 22 for injecting fuel into a combustion chamber A. The ECU 7 includes a fuel injection amount setting unit 74 for setting a fuel injection amount Q per one cycle. If in-cylinder filling air amount is not in a decreasing state, the ECU 7 performs in-cylinder injection control at the start-up for supplying fuel to an internal combustion engine 1-1, by injecting fuel of the fuel injection amount Q only by the DI 22, immediately after initiating start-up, and performs division injection control at the start-up to the internal combustion engine by injecting fuel of the fuel injection amount Q by the PFI 21, and by injecting the fuel by the DI 22, after the start-up in-cylinder injection control. If in-cylinder filling air amount is in a decreasing state, the ECU 7 performs an air inlet channel injection control at the start-up for supplying fuel to the internal combustion engine 1-1 by injecting the fuel of the fuel injection amount Q only by the PFI 21, immediately after initiating the start-up.


Inventors:
YOSHIZAKI SATOSHI
HIROOKA SHIGEMASA
MITANI SHINICHI
SATO SATORU
Application Number:
JP2008200218A
Publication Date:
February 18, 2010
Filing Date:
August 01, 2008
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D41/34; F02D41/06; F02D45/00; F02M63/00
Domestic Patent References:
JP2008025531A2008-02-07
JP2006233956A2006-09-07
JP2004068617A2004-03-04
Attorney, Agent or Firm:
Hiroaki Sakai



 
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