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:
Jun. 13, 2006
Filed:
May. 19, 2004
Masaki Kusada, Toyota, JP;
Katsuhiko Yamaguchi, Nissin, JP;
Toshio Inoue, Gotenba, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
During the catalyst warm-up period, when control enabling reduction in hydrocarbons is not executed in gasoline engine, the opening of the throttle valveis made smaller in order to reduce the hydrocarbon discharge. During the catalyst warm-up period, when control enabling reduction in the quantity of hydrocarbons is executed in gasoline engine, the opening of the throttle valveis made larger in order to accelerate warm-up of the catalyst, thereby shortening the catalyst warm-up period. A shorter catalyst warm-up period enables reduction in the total quantity of hydrocarbons from engine startup to the end of the catalyst warm-up period.