Title:
A urea water supplying device of an internal-combustion engine
Document Type and Number:
Japanese Patent JP6228159
Kind Code:
B2
Abstract:
A aqueous urea solution supply device (200) for an engine (1) is provided with a tank (210) that stores aqueous urea solution, a valve (230) configured to add the aqueous urea solution to exhaust gas, and a passage (240) configured to supply the aqueous urea solution from the tank (210) to the valve (230). When a pressure of the aqueous urea solution supplied to the valve (230) is equal to or lower than a predetermined pressure and the amount of the aqueous urea solution in the tank (210) is equal to or smaller than a predetermined threshold, an electronic control unit (80) determines that the aqueous urea solution in an amount required for cooling of the valve (230) cannot be supplied from the tank (210) to the valve (230) and executes a return control for returning the aqueous urea solution from the valve (230) to the tank (210).
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Inventors:
Tomihisa Tsuchiya
Naoya Okamoto
Takahiro Kiyoto
Sakutaro Hoshi
Naoya Okamoto
Takahiro Kiyoto
Sakutaro Hoshi
Application Number:
JP2015107571A
Publication Date:
November 08, 2017
Filing Date:
May 27, 2015
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
F01N3/08; F01N3/24
Domestic Patent References:
| JP2015075003A | ||||
| JP2014222064A | ||||
| JP2014009661A | ||||
| JP2008069731A |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda