发明授权
US08464521B2 Method and arrangement for maintaining a diesel particulate filter in a diesel engine exhaust system
有权
在柴油发动机排气系统中维持柴油机微粒过滤器的方法和装置
- 专利标题： Method and arrangement for maintaining a diesel particulate filter in a diesel engine exhaust system
- 专利标题（中）： 在柴油发动机排气系统中维持柴油机微粒过滤器的方法和装置
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申请号： US12597886申请日： 2007-05-01
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公开(公告)号： US08464521B2公开(公告)日： 2013-06-18
- 发明人: Chun Tai , Kenth I. Svensson
- 申请人： Chun Tai , Kenth I. Svensson
- 申请人地址： US NC Greensboro
- 专利权人： Mack Trucks, Inc.
- 当前专利权人： Mack Trucks, Inc.
- 当前专利权人地址： US NC Greensboro
- 代理机构： WRB-IP LLP
- 国际申请： PCT/US2007/067888 WO 20070501
- 国际公布： WO2008/133694 WO 20081106
- 主分类号： F01N3/00
- IPC分类号： F01N3/00 ; F01N3/02
摘要：
A method and apparatus for maintaining a diesel particulate filter (DPF) is provided. A pressure drop across the DPF is measured and an initial estimate of soot loading in the DPF is provided to a recursive filter. Using the recursive filter, the initial estimate of soot loading is updated in view of the measured pressure drop to provide an updated estimate of soot loading in the DPF. Active regeneration of the DPF is triggered when an earliest one of at least one triggering condition occurs, the updated estimate of soot loading reaching a predetermined value being one of the at least one triggering condition.
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