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:
May. 09, 2000
Filed:
Apr. 23, 1999
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In an engine mounted on a hybrid vehicle, even in an atmosphere that readily cools down a catalyst by relatively low-temperature gaseous exhausts, for example, under a fuel cut control, the structure of the invention quickly warms up the catalyst and maintains a conversion efficiency of the gaseous exhausts at a high level. When it is determined that an engine is in operation and the fuel cut control is being performed, a reflux valve is turned on to reflux the gaseous exhausts into an intake conduit. This control procedure enables the relatively low-temperature gaseous exhausts to be refluxed to the intake conduit, instead of flowing into the catalyst, thereby preventing the catalyst from being cooled down.