Title:
燃圧波形取得装置
Document Type and Number:
Japanese Patent JP5587364
Kind Code:
B2
Abstract:
A fuel injection system has a fuel injector and a fuel pressure sensor. An ECU acquires a pressure waveform detected by the fuel pressure sensor during performing a multi-stage injection as a detected waveform at the time of the multi-stage injection, memorizes a model waveform, which is used as a standard of the pressure waveform when an injection that is preceding an target injection is performed without performing the target injection when any one of an injection of a second stage or later of an injection is considered as the target injection among multi-stage injections, and extracts the pressure waveform resulting from the target injection by deducting the model waveform from the detected waveform at the multi-stage injection. The ECU corrects the model waveform used for extraction by a ratio according to a maximum injection rate in the injection of the preceding stage.
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Inventors:
Yoshiharu Nonoyama
Yamada Naoyuki
Yamada Naoyuki
Application Number:
JP2012132986A
Publication Date:
September 10, 2014
Filing Date:
June 12, 2012
Export Citation:
Assignee:
Japan, Inc. autoparts research institute
Denso, Inc.
Denso, Inc.
International Classes:
F02M65/00
Attorney, Agent or Firm:
Yamada Strength
Takashige Kurita
Kyoko Hino
Matsuda 洋
Takashige Kurita
Kyoko Hino
Matsuda 洋
Previous Patent: JPS5587363
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