Title:
燃料噴射制御装置
Document Type and Number:
Japanese Patent JP6287685
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the control accuracy of a fuel injection amount while alleviating a processing load.SOLUTION: A fuel injection control device which is used in a fuel injection system comprises a storage part which stores fuel from a high-pressure pump, and a fuel sensor which detects the pressure (combustion pressure) of fuel supplied to a fuel injection valve from the storage part and sends a sensor signal representing the combustion pressure. The fuel injection control device also comprises: first calculation means for calculating the drive start timing (start timing of an injection period) of the fuel injection valve; second calculation means for acquiring the combustion pressure by reading the sensor signal, and calculating a drive time (injection pulse width) of the fuel injection valve on the basis of the acquired combustion pressure; means for driving the fuel injection valve until the newest drive time calculated by the second calculation means elapses from the calculated drive start timing; and means for operating the second calculation means in only a period from timing (t1, t4) which is anterior by only a prescribed period when viewed from the calculated drive start timing up to specified timing (in this embodiment, a start time of the injection period).SELECTED DRAWING: Figure 8
Inventors:
Ryosuke Oda
Application Number:
JP2014169556A
Publication Date:
March 07, 2018
Filing Date:
August 22, 2014
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/04; F02D41/20; F02D41/22; F02D45/00
Domestic Patent References:
| JP2004036491A | ||||
| JP2011021489A | ||||
| JP2005248721A |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation