Title:
燃料噴射状態検出装置
Document Type and Number:
Japanese Patent JP5067461
Kind Code:
B2
Abstract:
A fuel-injection condition detector includes a first approximate portion which approximates a plurality of fuel pressure values representing the descent pressure waveform or the ascent pressure waveform into a least-squares approximate line by least-squares method; and a weighting portion which applies a weight to the fuel pressure value. The weight is set greater as a difference between the fuel pressure and the least-squares approximate line is larger. Then, the weighted values are approximated into a weighted approximate line by the least-squares method.
Inventors:
Takashima Shoko
Application Number:
JP2010209100A
Publication Date:
November 07, 2012
Filing Date:
September 17, 2010
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/40; F02D45/00; F02M45/00; F02M47/02
Domestic Patent References:
| JP200027689A | ||||
| JP20082848A | ||||
| JP20099331A | ||||
| JP201040553A | ||||
| JP2010207035A | ||||
| JP2006168628A |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Yasunari Kurita
Kyoko Hino
Satoru Ando
Hiroshi Matsuda
Yasunari Kurita
Kyoko Hino
Satoru Ando
Hiroshi Matsuda