Title:
還元剤供給制御装置
Document Type and Number:
Japanese Patent JP7457534
Kind Code:
B2
Abstract:
To provide a reductant supply control device that can reduce residual reductant agent when recovering reductant from a reductant supply passage communicated respectively to multiple injection valves included in an upstream side of two or more reduction catalysts.SOLUTION: A control device (60) includes a recovery control unit (61) that recovers reductant so as to prevent a gas to be introduced into a second reductant supply passage (46) via a first injection valve (31) from reaching a branching part (44) and so as to prevent a gas to be introduced into a third reductant supply passage (47) via a second injection valve (33) from reaching the branching part (44) on the basis of a capacity of the second reductant supply passage (46) and a capacity of the third reductant supply passage (47), and then recovers reductant by introducing a gas into a first reductant supply passage (45).SELECTED DRAWING: Figure 4
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Inventors:
Asahi Kunishima
Application Number:
JP2020037298A
Publication Date:
March 28, 2024
Filing Date:
March 04, 2020
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F01N3/08; B01D53/86; F01N3/28
Domestic Patent References:
| JP2016014387A |
Foreign References:
| US20180274420 |
Attorney, Agent or Firm:
Reiji Oba
Hajime Takahashi
Go Yashima
Hajime Takahashi
Go Yashima