Title:
REDUCER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2022054605
Kind Code:
A
Abstract:
To provide a reducer supply device suppressed in corrosion by a reducer.SOLUTION: A reducer supply device 7 in which a reducer for reduction treatment of an exhaust gas discharged from an internal combustion engine 1 to an exhaust pipe 2 is guided through a supply pipe 14 to supply the reducer into the exhaust pipe 2 from a reducer supply port 14a of the supply pipe 14, includes: a substitution fluid supply unit 9 connected to the supply pipe 14 for supplying a substitution fluid having reactivity lower than that of the reducer to the supply pipe 14; an opening adjustment valve 10 disposed at an upstream side of the reducer supply port 14 in the exhaust pipe 2 to adjust an opening of the exhaust pipe 2; and a supply control unit 12 controlling the opening adjustment valve 10 to close the exhaust pipe 2 in a case when drive of the internal combustion engine 1 is stopped, and controlling the substitution fluid supply unit 9 to supply the substitution fluid to the supply pipe 14 and to discharge the reducer from the supply pipe 14 to the exhaust pipe 2.SELECTED DRAWING: Figure 1
Inventors:
NATSUME KOJI
Application Number:
JP2020161740A
Publication Date:
April 07, 2022
Filing Date:
September 28, 2020
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F01N3/08; F01N3/24; F01N9/00; F01N13/08
Attorney, Agent or Firm:
Washeda International Patent Office