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. 16, 2016
Filed:
May. 28, 2014
Nippon Soken, Inc., Nishio-shi, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Yuji Ito, Nishio, JP;
Yoshiaki Atsumi, Susono, JP;
Nippon Soken, Inc., Nishio-shi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
When ignition is retarded in an internal combustion engine, an engine misfire detection system calculates a difference between combustion-time engine torque produced when combustion takes place in the engine, and expansion torque corresponding to non-combustion-time engine torque produced when the engine rotates without causing combustion, at intervals of a predetermined crank angle, calculates a shift amount with which a total value of the differences within a misfire determination period is maximized, and shifts the misfire determination period by the shift amount.