Title:
A fuel injection control device of a direct-injection engine
Document Type and Number:
Japanese Patent JP6098648
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To surely form an air-fuel mixture layer and a heat insulating gas layer in a combustion chamber in a direct-injection engine.SOLUTION: A fuel injection valve 6 is constituted so that the more a lift amount is, the larger an effective opening area of a nozzle hole is. A fuel injection control portion implements a first injection for injecting a fuel with a prescribed first lift amount for a prescribed first injection period, and then implements a second injection for injecting the fuel with a second lift amount less than the first lift amount and for a second injection time longer than the first injection period, when an operating state of an engine body (engine 1) is in a prescribed low rotation region, and implements the second injection, and then implements the first injection when the operating state of the engine is in a high rotation region where a rotating speed is higher than that in the low rotation region.SELECTED DRAWING: Figure 4
Inventors:
Takeshi Nagasawa
Nobuyuki Ota
Kenshi Uchida
Ryohei Ohno
Kei Sato
Eiji Fujimoto
Nobuyuki Ota
Kenshi Uchida
Ryohei Ohno
Kei Sato
Eiji Fujimoto
Application Number:
JP2015010853A
Publication Date:
March 22, 2017
Filing Date:
January 23, 2015
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D41/38; F02B3/06; F02B23/10; F02D41/02; F02D41/04; F02M51/00; F02M61/08; F02M61/10; F02M61/14
Domestic Patent References:
| JP2013068148A | ||||
| JP2013194644A | ||||
| JP2005002967A | ||||
| JP2000027652A | ||||
| JP2010071250A | ||||
| JP2012102654A | ||||
| JP6336932A | ||||
| JP2005194896A | ||||
| JP2008232119A |
Attorney, Agent or Firm:
Maeda patent office