Title:
蓄圧式燃料噴射装置
Document Type and Number:
Japanese Patent JP4306117
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a common rail type fuel injection device capable of suppressing the increase of black smoke concentration in the exhaust gas of a diesel engine caused by the follow-up delay of a common rail pressure relative to a command injection pressure, when the command injection pressure fluctuates. SOLUTION: During a transient time when the opening of an accelerator: ACCP and the rotational speed NE of an engine fluctuate, in other words, when the actual common rail pressure PC delays in following-up relative to the command injection pressure PFIN to command the discharge of a high pressure supply pump, a command injection quantity QFIN to command a valve opening period (energizing period) of not more than a guard injection quantity Qguard computed by a two dimensional map 42 having NE as a control parameter is restricted. Thereby, a fuel quantity consumed from the common rail can be reduced, and the follow-up and the response of the actual common rail pressure PC relative to the command injection pressure PFIN can be enhanced.
Inventors:
Kazuhiko Oshima
Application Number:
JP2000349082A
Publication Date:
July 29, 2009
Filing Date:
November 16, 2000
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/04; F02D41/38; F02M47/00; F02D41/40
Domestic Patent References:
| JP62258160A | ||||
| JP57018425A | ||||
| JP2000087809A | ||||
| JP8232740A | ||||
| JP6093915A |
Attorney, Agent or Firm:
Kenji Ishiguro
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