Title:
Exhaust after-treatment system, operating method thereof and computer program product
Document Type and Number:
WIPO Patent Application WO/2023/000166
Kind Code:
A1
Abstract:
The invention provides an exhaust after-treatment system (2) for a diesel engine (1), comprising an injection device (21) for injecting exhaust gas treatment agent and a controller (23) for controlling the injection device (21), wherein the controller (23) is provided to select different strategies for determining an injection limit value of the exhaust gas treatment agent depending on whether the diesel engine (1) has a demand for revolution increase within a predetermined period of time, and to keep an injection amount of the injection device (21) below the injection limit value. The invention also provides a method for operating the exhaust after-treatment system (2) and a corresponding computer program product. With the invention, different strategies can be selected for determining the injection limit value of the exhaust gas treatment agent depending on whether the diesel engine has the demand for revolution increase within the predetermined period of time, so that over-injection of the exhaust gas treatment agent can be reduced and, in particular, crystallization of the exhaust gas treatment agent can be avoided.
Inventors:
YAN MING (CN)
Application Number:
PCT/CN2021/107331
Publication Date:
January 26, 2023
Filing Date:
July 20, 2021
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
YAN MING (CN)
YAN MING (CN)
International Classes:
F01N3/20; F01N9/00
Domestic Patent References:
| WO2017194824A1 | 2017-11-16 | |||
| WO2008045499A2 | 2008-04-17 |
Foreign References:
| EP2876270A1 | 2015-05-27 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LTD. (CN)
Download PDF:
Previous Patent: METHOD AND APPARATUS FOR CLASSIFYING NODES OF A GRAPH
Next Patent: AGROBACTERIUM-MEDIATED COTTON GENETIC TRANSFORMATION METHOD
Next Patent: AGROBACTERIUM-MEDIATED COTTON GENETIC TRANSFORMATION METHOD