The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2013
Filed:
Jun. 09, 2010
Mitsuhiro Nishimura, Chiryu, JP;
Shinya Hoshi, Kariya, JP;
Youhei Morimoto, Kariya, JP;
Kazuhiro Higuchi, Ichinomiya, JP;
Mitsuhiro Nishimura, Chiryu, JP;
Shinya Hoshi, Kariya, JP;
Youhei Morimoto, Kariya, JP;
Kazuhiro Higuchi, Ichinomiya, JP;
Denso Corporation, Kariya, JP;
Abstract
The instantaneous interruption detection apparatus includes a noise removing section to remove a noise component from an in-cylinder pressure signal inputted thereto, and output a noise-removed in-cylinder pressure signal, a derivative signal calculating section to calculate a detection signal which is a function of a derivative value of the noise-removed in-pressure signal with respect to the crank angle of an internal combustion engine, an instantaneous interruption determining section configured to make determination that instantaneous interruption of the in-cylinder pressure signal has occurred when the detection signal has exceeded a detection threshold, and a threshold setting section configured to set the detection threshold to such a value that the instantaneous interruption determining section can make the determination in accordance with the noise-removed in-pressure signal which is dull compared to the in-cylinder pressure signal inputted to the noise removing section depending on a gain-frequency characteristic of the noise removing section.