发明授权
- 专利标题： EGR cooler bypass strategy
- 专利标题（中）： EGR冷却器旁路策略
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申请号： US12533336申请日： 2009-07-31
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公开(公告)号： US08047184B2公开(公告)日： 2011-11-01
- 发明人: Daniel Joseph Styles , Kevin Chen , David Curtis Ives , Frank M Korpics , Norman Hiam Opolsky , Timothy Webb
- 申请人： Daniel Joseph Styles , Kevin Chen , David Curtis Ives , Frank M Korpics , Norman Hiam Opolsky , Timothy Webb
- 申请人地址： US MI Dearborn
- 专利权人： Ford Global Technologies, LLC
- 当前专利权人： Ford Global Technologies, LLC
- 当前专利权人地址： US MI Dearborn
- 代理机构： Brooks Kushman P.C.
- 代理商 Julia Voutyras
- 主分类号： F02B47/08
- IPC分类号： F02B47/08 ; F02B47/00
摘要：
A system and method for controlling an engine control an EGR cooler bypass valve to divert at least a portion of EGR flow around an EGR cooler when operating under cooler fouling/plugging conditions, such as during idle, off-idle, exhaust system warm up and DPF regeneration or other post injection operation with EGR gas temperature below a corresponding threshold or with EGR low-temperature coolant temperature below a corresponding threshold. The system and method reduce exhaust gases passing through the EGR cooler that contain a high concentration of unburned or partially unburned fuel when the temperature in the EGR system is lower than the fuel condensation temperature.
公开/授权文献
- US20110023839A1 EGR COOLER BYPASS STRATEGY 公开/授权日：2011-02-03
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