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:
Mar. 14, 2006
Filed:
Apr. 07, 2004
Hiroyasu Koyama, Susono, JP;
Shigemasa Hirooka, Susono, JP;
Takeo Ogiso, Toyota, JP;
Kenji Kimura, Okazaki, JP;
Keita Nakanishi, Iwata, JP;
Hiroyasu Koyama, Susono, JP;
Shigemasa Hirooka, Susono, JP;
Takeo Ogiso, Toyota, JP;
Kenji Kimura, Okazaki, 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 into an exhaust path of an internal combustion engine and an open-close valve disposed in the secondary air supply path. The valve is opened and/or closed by drive force of negative pressure introduced from a portion of an intake path of the engine downstream of a throttle valve. The anomaly judgment apparatus includes an anomaly judgment section for judging whether or not the secondary air supply system is anomalous; a negative pressure judgment section for judging whether or not the negative pressure is secured to a degree required for the drive force to reliably open and/or close the open-close valve; and an anomaly judgment prohibition section for prohibiting judgment by the anomaly judgment section when the negative pressure is not secured to the required degree.