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:
Dec. 22, 2015
Filed:
Oct. 26, 2011
Tatsuhiro Hashida, Susono, JP;
Hiroki Nishijima, Suntou-gun, JP;
Tatsuhiro Hashida, Susono, JP;
Hiroki Nishijima, Suntou-gun, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
An internal combustion engine includes an SCR system disposed on an exhaust passage and a particulate matter sensor disposed downstream of the SCR system, the particulate matter sensor for producing an output that corresponds to an amount of particulate matter deposited on an element section. A control apparatus for the internal combustion engine includes: means for detecting a condition of the element section being deposited with a urea-related substance; and means for controlling to bring a temperature of the element section to a first temperature range when the condition of being deposited with the urea-related substance is detected. The first temperature range is higher than a temperature at which the urea-related substance vaporizes and lower than a temperature at which the particulate matter burns. This prevents the urea-related substance from being deposited on an electrode of the particulate matter sensor and limits variations in an output of the particulate matter sensor.