Title:
ディーゼルエンジンの燃焼制御装置
Document Type and Number:
Japanese Patent JP4069711
Kind Code:
B2
Abstract:
In a combustion control apparatus of a direct-injection diesel engine, in which a fuel is injected at an early timing with an EGR ratio more than a first predetermined value at pre-mixed combustion area (H) where an engine load is relatively low so as to provide a pre-mixed combustion mode, while a diesel combustion mode is provided with the EGR ratio less than a second predetermined value at diffusion combustion area (D), when the operation of the engine 1 transfers from one of the pre-mixed combustion area (H) and the diffusion combustion area (D) to the other thereof, an opening of the an EGR valve 35 is changed and thereby a fuel injection mode is changed after an actual EGR ratio: EGR becomes a predetermined value: EGR1. When the EGR ratio: EGR is within a certain range (SB5SB13SB15), a follow-up injection (latter-injection) is executed (SB15, SB7) so that combustion thereby may begin at the timing when the main-combustion beginning at around TDC completes mostly. The latter-injection can make smoke produced by the main-injection burn again effectively. As a result, smoke concentration in the exhaust gas can be reduced greatly, and a transient deterioration of the exhaust gas condition at the transition between the operating areas (H), (D) and the like can be avoided.
Inventors:
Kazushi Kataoka
Akihiro Kobayashi
Tomoaki Saito
Akihiro Kobayashi
Tomoaki Saito
Application Number:
JP2002266517A
Publication Date:
April 02, 2008
Filing Date:
September 12, 2002
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D41/38; F02D45/00; F02B47/08; F02D21/08; F02D41/00; F02D41/02; F02D41/04; F02D41/30; F02D41/40; F02B1/12; F02B3/06
Domestic Patent References:
| JP2000110669A | ||||
| JP2001073856A | ||||
| JP2001098975A | ||||
| JP2002038990A | ||||
| JP2001152909A | ||||
| JP2001050033A | ||||
| JP2001164968A | ||||
| JP11166441A |
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Teshima Masaru
Atsushi Fujita
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Teshima Masaru
Atsushi Fujita