Title:
EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2019183706
Kind Code:
A
Abstract:
To reduce NOx occluded in an occlusion reduction type NOx catalyst while suppressing the worsening of fuel economy.SOLUTION: An exhaust emission control device for an internal combustion engine for supplying reductant to a NOx catalyst at the time of deceleration or stop of a vehicle stops the supply of the reductant to the NOx catalyst when supplying the reductant to the NOx catalyst if the acceleration of the vehicle is predicted and the temperature of the NOx catalyst is equal to or lower than a predetermined temperature. Stopping supply of the reductant in advance of acceleration suppresses the stay of much reductant in the NOx catalyst during acceleration.SELECTED DRAWING: Figure 3
Inventors:
ISHIDA SHOHEI
YAMASHITA YUTO
SERAI TETSURO
TOMOMATSU KENICHI
YAMAMOTO SHUHEI
KOJIMA TAKAYOSHI
UMEMOTO TOSHITAKE
YAMASHITA YUTO
SERAI TETSURO
TOMOMATSU KENICHI
YAMAMOTO SHUHEI
KOJIMA TAKAYOSHI
UMEMOTO TOSHITAKE
Application Number:
JP2018073260A
Publication Date:
October 24, 2019
Filing Date:
April 05, 2018
Export Citation:
Assignee:
SOKEN INC
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
F01N3/08; B01D53/94; F01N3/36; F02D45/00
Attorney, Agent or Firm:
Akira Hirakawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Atsushi Kokubo
Hironobu Yazawa
Takehiko Sekine
Katsuhiko Imahori
Fuminori Miyashita
Atsushi Kokubo
Hironobu Yazawa