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:
Nov. 10, 2015
Filed:
May. 25, 2012
Applicants:
Kazuhiro Akisada, Toyota, JP;
Toru Yaeo, Anjo, JP;
Shinya Kondo, Gotemba, JP;
Inventors:
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/22 (2006.01); F01N 3/32 (2006.01); F01N 9/00 (2006.01);
U.S. Cl.
CPC ...
F01N 3/22 (2013.01); F01N 3/225 (2013.01); F01N 3/32 (2013.01); F01N 9/00 (2013.01); Y02T 10/20 (2013.01); Y02T 10/47 (2013.01);
Abstract
In an internal combustion engine that includes a first secondary air supply unit having a first air pump and a first air switching valve and a second secondary air supply unit having a second air pump and a second air switching valve, a time difference is provided between the operation start timing of the first air pump and the operation start timing of the second air pump, and the open timing of the first air switching valve and the open timing of the second air switching valve are set so as to be simultaneous with each other.