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:
Nov. 22, 2005
Filed:
Apr. 07, 2004
Hiroyasu Koyama, Susono, JP;
Kenji Kimura, Okazaki, JP;
Shigemasa Hirooka, Susono, JP;
Takeo Ogiso, Toyota, JP;
Keita Nakanishi, Iwata, JP;
Hiroyasu Koyama, Susono, JP;
Kenji Kimura, Okazaki, JP;
Shigemasa Hirooka, Susono, JP;
Takeo Ogiso, Toyota, JP;
Keita Nakanishi, Iwata, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Abstract
An anomaly judgment apparatus for a secondary air supply system which includes a secondary air supply path for introducing secondary air from an intake path of an engine into an exhaust path at a location upstream of a catalytic converter disposed in the exhaust path. The apparatus includes a pressure detector for detecting pressure in the secondary air supply path, and an anomaly judgment section for calculating pulsation level indicative of the degree of pulsation of pressure detected by the pressure detector and for judging, on the basis of at least the pulsation level, whether or not the secondary air supply system is anomalous. The apparatus further includes an anomaly judgment prohibiting section for prohibiting judgment by the anomaly judgment section when the degree of propagation of intake air pulsation arising in the intake path into the secondary air supply path is equal to or higher than a predetermined level.