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:
Apr. 01, 2008
Filed:
Apr. 28, 2005
Yuji Narita, Kariya, JP;
Yoshiyuki Takahashi, Kariya, JP;
Takeshi Imai, Kariya, JP;
Hisanobu Suzuki, Toyota, JP;
Yuji Narita, Kariya, JP;
Yoshiyuki Takahashi, Kariya, JP;
Takeshi Imai, Kariya, JP;
Hisanobu Suzuki, Toyota, JP;
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An internal combustion engine includes parallel first and second intake passages, and the intake passages respectively include first and second superchargers. A first airflow meter measures the intake air amount in the first intake passage. A second airflow meter measures the intake air amount in the second intake passage. An ECU obtains an air amount difference between the intake air amount measured by the first airflow meter and the intake air amount measured by the second airflow meter to compare the obtained air amount difference with a predetermined abnormality determination value. The ECU determines that an abnormality has occurred in one of the superchargers when the air amount difference exceeds the abnormality determination value. The abnormality determination of the superchargers is based on the air amount difference between the intake passages. This accurately determines the occurrence of an abnormality in the superchargers regardless of structure of the intake passages.