Title:
KNOCKING DETERMINATION DEVICE AND KNOCKING CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/059408
Kind Code:
A1
Abstract:
According to the present invention, a knocking determination device: has a determination part that detects vibration that occurs at an internal combustion engine; and performs knocking determination on the basis of a detection signal from the detection part. Specifically, from a waveform obtained on the basis of the detection signal, the knocking determination device specifies, from among a plurality of maximum points (p) at which intensity is at a maximum, at least the following three maximum points (p): a second point (p2) that is the maximum point (p) at which intensity is greatest; a first point (p1) that is a maximum point (p) that is before the second point (p2); and a third point (p3) that is a maximum point (p) that is after the second point (p2). The knocking determination device uses the three maximum points (p) to calculate prescribed feature quantities. The knocking determination device performs knocking determination on the basis of the feature quantities.
Inventors:
FUJII AYA (JP)
KUROSAWA MASANORI (JP)
TANAKA KO (JP)
KUROSAWA MASANORI (JP)
TANAKA KO (JP)
Application Number:
PCT/JP2019/032832
Publication Date:
March 26, 2020
Filing Date:
August 22, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01H17/00; F02D45/00
Foreign References:
| JP2006336604A | 2006-12-14 | |||
| JP2001227400A | 2001-08-24 | |||
| JP2002364448A | 2002-12-18 | |||
| JP2004353531A | 2004-12-16 | |||
| JP2004317207A | 2004-11-11 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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