Title:
内燃機関のノック検出装置
Document Type and Number:
Japanese Patent JP4482571
Kind Code:
B2
Abstract:
A knock detection apparatus for an internal combustion engine can accurately detect the occurrence of a knock without an influence of a noise component even if the noise component having the same frequency as a knock vibration superposes on an ionic current signal. The apparatus includes an ionic current detection section, a knock signal detection section for detecting a knock signal based on an ionic current, a crank angle sensor for detecting a crank angle corresponding to a rotational position of the engine, a window setting section for setting a noise detection window, a noise component detection section for detecting a noise component in the window, and a knock determination section for determining the occurrence of a knock based on a relation between the noise component and the knock signal. The window setting section sets the window after a predetermined crank angle corresponding to an end of a combustion stroke of the engine.
Inventors:
Takahiko Inada
Kimihiko Tanaya
Kimihiko Tanaya
Application Number:
JP2007110266A
Publication Date:
June 16, 2010
Filing Date:
April 19, 2007
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F02D45/00
Domestic Patent References:
| JP2003278593A | ||||
| JP2001234804A | ||||
| JP4042244U | ||||
| JP2000145605A | ||||
| JP2006307807A |
Attorney, Agent or Firm:
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda