Invention Grant
US08484946B2 Method and device for determining an oxygen storage capacity of a catalytic converter of an internal combustion engine and method and device for determining a dynamic time duration for exhaust probes of an internal combustion engine
有权
用于确定内燃机的催化转化器的储氧能力的方法和装置，以及用于确定内燃机排气探针的动态持续时间的方法和装置
- Patent Title: Method and device for determining an oxygen storage capacity of a catalytic converter of an internal combustion engine and method and device for determining a dynamic time duration for exhaust probes of an internal combustion engine
- Patent Title (中): 用于确定内燃机的催化转化器的储氧能力的方法和装置，以及用于确定内燃机排气探针的动态持续时间的方法和装置
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Application No.: US13031334Application Date: 2011-02-21
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Publication No.: US08484946B2Publication Date: 2013-07-16
- Inventor: Tino Arlt , Gerd Rösel
- Applicant: Tino Arlt , Gerd Rösel
- Applicant Address: DE Hannover
- Assignee: Continental Automotive GmbH
- Current Assignee: Continental Automotive GmbH
- Current Assignee Address: DE Hannover
- Agency: King & Spalding L.L.P.
- Priority: DE102005024872 20050531
- Main IPC: F01N3/00
- IPC: F01N3/00
Abstract:
An exhaust gas catalytic converter is laden with oxygen until it is saturated at least upstream of an exhaust gas probe. A predefined first rich air/fuel ration is set in a combustion chamber of a cylinder. A first oxygen storage capacity value is determined as a function of the measurement signal of an exhaust gas probe and the predefined first rich air/fuel ratio. The exhaust gas catalytic converter is laden with oxygen until it is saturated. A predefined second rich air/fuel ration is set in the combustion chamber of the cylinder. A second oxygen storage capacity value is determined as a function of the measurement signal of the exhaust gas probe and the predefined second rich air/fuel ration. A corrected oxygen storage capacity value is determined as a function of the first and second oxygen storage capacity values.
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