Title:
内燃機関のノッキング判定装置、ノッキング判定方法およびその方法をコンピュータに実現させるプログラムならびにそのプログラムを記録した記録媒体
Document Type and Number:
Japanese Patent JP4997026
Kind Code:
B2
Abstract:
An engine ECU executes operations including: extracting vibration intensities of a plurality of frequency bands from vibration detected by a knock sensor, multiplying the extracted vibration intensity of each frequency band by a weight coefficient and adding the results in correspondence with crank angles to calculate integrated values of every five degrees; calculating a coefficient of correlation based on a result of comparison between a vibration waveform of a frequency band and a knock waveform model prepared in advance; calculating a knock intensity; determining occurrence of knocking in accordance with the calculated coefficient of correlation and the knock intensity; and determining no occurrence of knocking in accordance with the calculated coefficient of correlation and the knock intensity.
Inventors:
Kaneko Ritsuto
Kenji Kasashima
Masaharu Yoshihara
Kenji Senda
Norihito Hanai
Yasuhiro Yamasako
Yuichi Takemura
Kenji Kasashima
Masaharu Yoshihara
Kenji Senda
Norihito Hanai
Yasuhiro Yamasako
Yuichi Takemura
Application Number:
JP2007227880A
Publication Date:
August 08, 2012
Filing Date:
September 03, 2007
Export Citation:
Assignee:
トヨタ自動車株式会社
株式会社デンソー
株式会社デンソー
International Classes:
G01H17/00; F02D45/00; G01H3/08
Domestic Patent References:
| JP4008850A | ||||
| JP2006226967A | ||||
| JP2007211770A | ||||
| JP3149336A |
Attorney, Agent or Firm:
Fukami patent office