发明授权
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
- 专利标题： 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
- 专利标题（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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申请号： US13031334申请日： 2011-02-21
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公开(公告)号： US08484946B2公开(公告)日： 2013-07-16
- 发明人: Tino Arlt , Gerd Rösel
- 申请人： Tino Arlt , Gerd Rösel
- 申请人地址： DE Hannover
- 专利权人： Continental Automotive GmbH
- 当前专利权人： Continental Automotive GmbH
- 当前专利权人地址： DE Hannover
- 代理机构： King & Spalding L.L.P.
- 优先权： DE102005024872 20050531
- 主分类号： F01N3/00
- IPC分类号： F01N3/00
摘要：
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.