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:
Aug. 11, 2015
Filed:
Mar. 16, 2011
Takashi Tsunooka, Gotenba, JP;
Takashi Tsunooka, Gotenba, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
An electronic control unit (ECU) is equipped with a turbine passing path constant that corresponds to a time required for exhaust gas to flow to an air-fuel ratio sensor via a turbine of a turbosupercharger, and a bypass path constant that corresponds to a time required for exhaust gas to flow to the air-fuel ratio sensor via a bypass passage. The ECU calculates first and second fuel injection correction amounts and in which the path constants and are reflected, respectively. The ECU selects one of the fuel injection correction amounts and based on at least an open or closed state of the waste gate valve (WGV), corrects a fuel injection amount using the selected fuel injection correction amount. It is thus possible to appropriately compensate for differences in exhaust path lengths and air-fuel ratio fluctuations that arise due to opening or closing of the WGV.