Title:
A fuel injection control device of an internal-combustion engine
Document Type and Number:
Japanese Patent JP6206151
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel injection control device for an internal combustion engine which includes a fuel injection valve provided below an intake port for injecting fuel directly into a cylinder, for improving the homogeneity of air-fuel mixture in the cylinder even at a low engine speed.SOLUTION: The fuel injection control device for the internal combustion engine includes a control part for executing main injection control and sub injection control to execute partial lift injection continuously several times. The control part executes the main injection control in an intake stroke and also executes the sub injection control in a period right before an intake valve is closed in a compression stroke and when gas in the cylinder reversely flows into the intake port. During the sub injection control, it performs the partial lift injection more times in proportion as an engine speed is lower, and increases the rate of the total amount of fuel to be injected into the cylinder with the partial lift injection to the total amount of the fuel to be injected into the cylinder in one engine cycle.
Inventors:
Spearfield
Daisuke Uchida
Daisuke Uchida
Application Number:
JP2013256320A
Publication Date:
October 04, 2017
Filing Date:
December 11, 2013
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D41/34; F02D41/02; F02D41/04; F02D45/00; F02M45/08
Domestic Patent References:
| JP2009513856A | ||||
| JP2009293526A | ||||
| JP2004100603A | ||||
| JP2007224740A | ||||
| JP2013155751A |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office
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