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:
Jul. 24, 2007
Filed:
Oct. 14, 2002
Hisashi Ohki, Numazu, JP;
Masaaki Kobayashi, Susono, JP;
Naofumi Magarida, Susono, JP;
Daisuke Shibata, Susono, JP;
Shinobu Ishiyama, Numazu, JP;
Akihiko Negami, Gotemba, JP;
Hisashi Ohki, Numazu, JP;
Masaaki Kobayashi, Susono, JP;
Naofumi Magarida, Susono, JP;
Daisuke Shibata, Susono, JP;
Shinobu Ishiyama, Numazu, JP;
Akihiko Negami, Gotemba, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
Removal of fine particles by oxidation or/and sulfur poisoning recovery control may be required when an internal combustion engine has been in an extremely low load state for a predetermined period or more. In this case, the engine speed of the internal combustion engine () is adjusted to a range where the temperature of a filter () can be raised by heat-up control. The heat-up control is then executed by a filter temperature control means to raise the temperature of the filter () to a predetermined value. When the filter () reaches the predetermined temperature by means of low-temperature combustion, post-injection, VIGOM-injection, addition offuel to an exhaust system and the like, removal of fine particles by oxidation or/and sulfur poisoning recovery control for eliminating sulfur poisoning of a NOx absorbent are conducted. Removal of PMs captured by the filter and sulfur poisoning recovery control of the NOx absorbent can thus be conducted even if the internal combustion engine is left in an extremely low load operational state.