Title:
ディーゼルエンジンの制御装置
Document Type and Number:
Japanese Patent JP7408963
Kind Code:
B2
Abstract:
To suppress the generation of soot by increasing the air utilization rate of fuel injected by after-injection while maintaining relatively good fuel consumption performance.SOLUTION: A diesel engine has a piston having a cavity formed in a crown surface. The cavity has a bottom part, an outer peripheral part recessed to be convex to the radial outside, and a lip part protruded on the upper side of the outer peripheral part to be convex to the radial inside in a cross-sectional view. An injection control part allows an injector to execute main injection Jm for injecting fuel to the lip part during operation in a predetermined operation area and after-injection Ja for injecting a smaller amount of fuel than the main injection Jm at a predetermined timing in an expansion stroke delayed from the main injection Jm. An injection interval time Ti as a time from finishing the main injection Jm to starting the after-injection Ja is set shorter as the injection amount of the main injection Jm is greater.SELECTED DRAWING: Figure 6
Inventors:
Takeshi Matsubara
Naotoshi Shirahashi
Yasuyuki Sagane
Kim Nao
Naotoshi Shirahashi
Yasuyuki Sagane
Kim Nao
Application Number:
JP2019164683A
Publication Date:
January 09, 2024
Filing Date:
September 10, 2019
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D41/38; F02B23/06; F02D41/40
Domestic Patent References:
| JP2018197506A | ||||
| JP2007177664A | ||||
| JP2017115634A | ||||
| JP2006200411A |
Attorney, Agent or Firm:
Masataka Kotani
Akira Sato
Akira Sato