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:
Oct. 10, 2017
Filed:
Apr. 09, 2013
Kohei Yoshida, Gotenba, JP;
Yoshiteru Yazawa, Nagoya, JP;
Kohei Yoshida, Gotenba, JP;
Yoshiteru Yazawa, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
In an internal combustion engine, an exhaust purification catalyst (), hydrocarbon feed valve () and particulate filter () are arranged in an exhaust passage. If temperature increasing control should be performed when a first NOpurification method is performed, injection of hydrocarbons for the first NOpurification method is performed with a predetermined period and injection of hydrocarbons for temperature increasing control is performed in a time period when injection of hydrocarbons for the first NOpurification method is not performed, the first NOpurification method being configured to purify NOwhich is contained in the exhaust gas by injecting hydrocarbons from the hydrocarbon feed valve with the predetermined period, the temperature increasing control being configured to increase a temperature of the particulate filter to remove particulate matters trapped on the particulate filter. An amount of injection of hydrocarbons for temperature increasing control when an actual temperature of the particulate filter is low is set larger than that when the actual temperature of the particulate filter is high.