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:
Sep. 04, 2012
Filed:
Feb. 06, 2009
Shinya Asaura, Mishima, JP;
Tomihisa Oda, Numazu, JP;
Shunsuke Toshioka, Susono, JP;
Yutaka Tanai, Susono, JP;
Shinya Asaura, Mishima, JP;
Tomihisa Oda, Numazu, JP;
Shunsuke Toshioka, Susono, JP;
Yutaka Tanai, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An internal combustion engine wherein when an aqueous urea solution should be fed from an aqueous urea solution feed valve (), a feed pump () is operated forward and aqueous urea solution in an aqueous urea solution tank () is fed through an aqueous urea solution feed passage () into the aqueous urea solution feed valve (). When ceasing the feed of aqueous urea solution from the aqueous urea solution feed valve (), the feed pump () is operated in reverse whereby the ammonia gas generated in the aqueous urea solution tank () is drawn through a ammonia gas feed pipe () into the aqueous urea solution feed passage (). Next, when the feed pump () is operated forward, the ammonia gas drawn into the aqueous urea solution feed path () is ejected from the aqueous urea solution feed valve ().