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:
Jan. 05, 2010
Filed:
May. 02, 2008
Hikokazu Akimoto, Aichi-ken, JP;
Hikokazu Akimoto, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
Upon incompletion of abnormality detection of an air-fuel ratio sensor provided in an exhaust pipe of an engine during operation of the engine (steps Sand S), when the state of charge SOC of a battery is lower than a preset reference charge level Sref or when the accelerator opening Acc is not less than a preset reference opening Aref (steps Sand S), the abnormality detection is not performed (step S). When the state of charge SOC of the battery is not lower than the preset reference charge level Sref and when the accelerator opening Acc is less than the preset reference opening Aref (steps Sand S), the abnormality detection is performed to identify abnormality or normality of the air-fuel ratio sensor based on an air fuel ratio AF output from the air-fuel ratio sensor (steps Sto S). The drive control cuts off a fuel supply to the engine, controls a motor to enable motoring of the engine, and ensures output of a torque demand to a driveshaft, while the abnormality detection is performed.