Method of controlling urea dosing in an exhaust system of a vehicle
Патенты
Язык: |
Английский |
Тип: |
Патент на изобретение |
Номер (11) |
EP 2375023 B1 |
Номер заявки (21): |
10159228.5 |
Дата подачи заявки (22): |
7 апр. 2010 г. |
Дата начала отсчета срока действия патента (24): |
|
Дата публикации патента (44,45,46): |
19 сент. 2012 г. |
Дата публикации заявки (43): |
12 окт. 2011 г. |
Авторы |
Balenovic M.
,
Carberry B.P.
,
Dubkov A.A.
,
Harmsen J.
,
Reichert M.
|
Организации |
1 |
Ford Global Technologies, LLC Dearborn, MI 48126 (US)
|
|
The present invention relates to a method of controlling urea dosing in an exhaust system of a vehicle, wherein said urea is injected into an exhaust gas flow in said exhaust system for selective catalytic reduction, and wherein said method comprising the following steps: (i) Establishing an allocation rule for a group of parameters to characterize an operating condition in said exhaust system, and for a value of an index (UDSI) suited to characterize an Urea Deposition Severity in said exhaust system, (ii) determining a current value combination for said group of parameters for a current operation condition of said exhaust system, (iii) based on said allocation rule, allocating said value combination to a current value of said index (UDSI), and (iv) controlling urea dosing in said exhaust system based on said current value of said index (UDSI).