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Title:
FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2009215934
Kind Code:
A
Abstract:

To maintain an appropriate combustion state of main injection fuel even if fuel adhering on a cylinder inner wall or the like by pilot injection remains until start of main injection.

In cases that fuel adhering on the cylinder inner wall or the like by pilot injection remains (in a liquid state) until start of main injection (adhesion-remain exists), quantity of pilot injection is increased by A*X2 and quantity of main injection is reduced by A*X2 as compared to quantities in other cases (adhesion-remain does not exist). A*X2 indicates fuel adhesion quantity at a time of main injection start caused by pilot injection in a previous cycle. Drop of cylinder temperature at a time of main injection start can be compensated and ignition delay time in main injection fuel can be maintained appropriately by this increase of quantity of pilot injection in the case that adhesion-remain exists. Additionally, fluctuation of output torque can be inhibited since total fuel injection quantity does not change depending on whether adhesion-remain exists or adhesion-remain does not exist.


Inventors:
HOKI YUSUKE
ITO HISANORI
Application Number:
JP2008059239A
Publication Date:
September 24, 2009
Filing Date:
March 10, 2008
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D41/04; F02D41/38; F02D41/40
Attorney, Agent or Firm:
Patent business corporation Prospec patent office