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:
Apr. 28, 2015
Filed:
Dec. 06, 2010
Yoshihisa Tsukamoto, Susono, JP;
Hiromasa Nishioka, Susono, JP;
Kohei Yoshida, Gotenba, JP;
Yuki Bisaiji, Mishima, JP;
Junichi Matsuo, Susono, JP;
Takamitsu Asanuma, Mishima, JP;
Yoshihisa Tsukamoto, Susono, JP;
Hiromasa Nishioka, Susono, JP;
Kohei Yoshida, Gotenba, JP;
Yuki Bisaiji, Mishima, JP;
Junichi Matsuo, Susono, JP;
Takamitsu Asanuma, Mishima, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
In an internal combustion engine, inside of an engine exhaust passage, an NOadsorption part and an NOpurification part are arranged. The NOpurification part has the property of reducing NOwhich is contained in exhaust gas if the concentration of hydrocarbons is made to vibrate by within a predetermined range of amplitude and within a predetermined range of period. When NOis to be desorbed from the NOadsorption part, the current NOwhich is contained in the exhaust gas and the NOwhich is desorbed from the NOadsorption part are reduced by making the concentration of hydrocarbons of the NOpurification part vibrate by the amplitude and period which are set for the current engine operating state, at least of which (ΔT·k) has been corrected so that the amount of hydrocarbons becomes greater.