Invention Grant
US09366171B2 Method for determining an estimated amount of soot accumulated in a particulate filter of an exhaust gas after-treatment system
有权
用于确定在废气后处理系统的颗粒过滤器中累积的烟灰的估计量的方法
- Patent Title: Method for determining an estimated amount of soot accumulated in a particulate filter of an exhaust gas after-treatment system
- Patent Title (中): 用于确定在废气后处理系统的颗粒过滤器中累积的烟灰的估计量的方法
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Application No.: US14153449Application Date: 2014-01-13
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Publication No.: US09366171B2Publication Date: 2016-06-14
- Inventor: Jianwen Li , Rahul Mital
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn Law Group, PLLC
- Main IPC: F01N3/00
- IPC: F01N3/00 ; F01N9/00 ; F01N3/10 ; F01N3/20 ; F01N3/035 ; F01N11/00
Abstract:
A method for estimating the amount of soot accumulated in a particulate filter of a vehicle exhaust gas system is provided. The system may include an engine, an exhaust gas system, having a particulate filter, and a controller configured to execute the present method. The controller may be configured to evaluate an instantaneous volumetric flow rate of an exhaust gas flowing through the exhaust gas system; monitor an exhaust gas pressure drop across the particulate filter; determine a drive state of the vehicle based on the instantaneous volumetric flow rate of exhaust gas and the exhaust gas pressure drop; and execute one of a first control action when the drive state is a steady-state drive state and a second control action when the drive state is a transient-state drive state.
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