Title:
FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2016205184
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve the operability and exhaust property in a low-load region where a required fuel injection amount is smaller, by reducing a minimum fuel injection amount allowing injection with sufficient accuracy while reducing cost.SOLUTION: In an intake passage for each cylinder, a first fuel injection valve 6 to be driven by a first driving circuit 60 and a second fuel injection valve 7 to be driven by a second driving circuit 70 are arranged. The second fuel injection valve 7 is set at a relatively lower driving voltage and has relatively lower flow characteristics than the first fuel injection valve 6 which is set at a relatively high driving voltage and has relatively high flow characteristics. Thus, a minimum fuel injection amount obtained according to the injection pulse widths of the fuel injection valves 6, 7 is further reduced than the case of using the two first fuel injection valves 6, to improve the operability and the exhaust property.SELECTED DRAWING: Figure 3
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Inventors:
KANDA KOSUKE
MURAKAMI TOMOYUKI
MURAKAMI TOMOYUKI
Application Number:
JP2015085309A
Publication Date:
December 08, 2016
Filing Date:
April 17, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
F02D41/34; F02D41/20; F02M69/00
Domestic Patent References:
| JP2010048179A | 2010-03-04 | |||
| JP2011132849A | 2011-07-07 | |||
| JPH07224708A | 1995-08-22 |
Attorney, Agent or Firm:
Moriaki Ogawa
Haruyuki Nishiyama
Mitsuji Sekiya
Haruyuki Nishiyama
Mitsuji Sekiya