FUEL INJECTION CONTROL APPARATUS

Title:

FUEL INJECTION CONTROL APPARATUS

Document Type and Number:

Japanese Patent JP2011190725

Kind Code:

A

Abstract:

To provide a fuel injection control apparatus which accurately adjusts an injection interval in performing a multistage injection.

The apparatus is applied to an engine equipped with a fuel supply system supplying fuel in a pressurized state to a fuel injection valve, and performs fuel injection from the injection valve in one combustion cycle through a multistage injection including a pre-injection and a main injection that are performed at an interval. A deviation ΔPR between a required value (one-dot chain line) and an actual value (solid line) regarding the end timing of the pre-injection is calculated based on the manner of fluctuation of fuel pressure in the fuel injection valve, that is detected by a pressure sensor. Target main injection timing Tsm and a target pre-interval Tip are individually set based on the operation state of the engine. Control target values regarding a period of performing the pre-injection are set based on the deviation ΔPR, the target main injection timing Tsm and the target pre-interval Tip.

Inventors:

MIYAURA TAKESHI
ITO YOSHIYASU
TSUCHIYAMA MAKIO
FURUYA KEIHIRO

Application Number:

JP2010056171A

Publication Date:

September 29, 2011

Filing Date:

March 12, 2010

Export Citation:

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Assignee:

TOYOTA MOTOR CORP

International Classes:

F02D41/38; F02D35/00; F02M47/00; F02M47/02

Domestic Patent References:

JP2001227388A	2001-08-24
JP2009057924A	2009-03-19
JP2009057925A	2009-03-19
JP2003166439A	2003-06-13
JP2005090254A	2005-04-07
JP2009275621A	2009-11-26
JP2005163559A	2005-06-23

Foreign References:

WO2003061469A1

2003-07-31

Attorney, Agent or Firm:

Hironobu Onda
Makoto Onda

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