Title:
内燃機関の尿素水供給装置
Document Type and Number:
Japanese Patent JP4325725
Kind Code:
B2
Abstract:
An internal combustion engine wherein when an aqueous urea solution should be fed from an aqueous urea solution feed valve (8), a feed pump (9) is operated forward and aqueous urea solution in an aqueous urea solution tank (4) is fed through an aqueous urea solution feed passage (10) into the aqueous urea solution feed valve (8). When ceasing the feed of aqueous urea solution from the aqueous urea solution feed valve (8), the feed pump (9) is operated in reverse whereby the ammonia gas generated in the aqueous urea solution tank (4) is drawn through a ammonia gas feed pipe (11) into the aqueous urea solution feed passage (10). Next, when the feed pump (9) is operated forward, the ammonia gas drawn into the aqueous urea solution feed path (10) is ejected from the aqueous urea solution feed valve (8).
Inventors:
Shinya Asaura
Tomihisa Oda
Shunsuke Toshioka
Yutaka Tauchi
Tomihisa Oda
Shunsuke Toshioka
Yutaka Tauchi
Application Number:
JP2008033642A
Publication Date:
September 02, 2009
Filing Date:
February 14, 2008
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/08; B01D53/94
Domestic Patent References:
| JP2005105914A | ||||
| JP2008519932A | ||||
| JP2002527660A | ||||
| JP2004293494A | ||||
| JP2003042014A |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinji Mitsuhashi
Yoryo Mihashi
Koichi Ito
Jun Tsuruta
Tetsuro Shimada
Shinji Mitsuhashi
Yoryo Mihashi
Koichi Ito