Title:
燃料噴射制御装置
Document Type and Number:
Japanese Patent JP6447434
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of realizing equal-pressure combustion with a simple constitution.SOLUTION: A control device is applied to a diesel engine including a fuel injection valve directly injecting a fuel into a combustion chamber. The control device controls equal-pressure combustion to keep a peak of a cylinder pressure in the combustion chamber after starting combustion, substantially constant according to an equal pressure target value Ptptg. In detail, the control device determines a target pressure waveform Tcurve on the basis of an operating state of the engine in a control period including a pressure rise period before the cylinder pressure reaches the equal-pressure target value Ptptg and an equal-pressure period after it reaches the equal-pressure target value Ptptg, in controlling the equal-pressure combustion. The control device divides a fuel injection amount requested per one combustion cycle of the engine and injects the same in multistage from the fuel injection valve to control the cylinder pressure Preal detected by a cylinder pressure sensor to the target pressure waveform Tcurve.SELECTED DRAWING: Figure 4
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Inventors:
Kazufumi Tomita
Application Number:
JP2015181861A
Publication Date:
January 09, 2019
Filing Date:
September 15, 2015
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/04; F02D41/02; F02D41/40; F02D43/00; F02D45/00; F02M45/00
Domestic Patent References:
| JP58165229U | ||||
| JP2002357154A | ||||
| JP2005282441A | ||||
| JP2001159379A |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita