发明授权
- 专利标题: Systems and methods for layered regeneration of a particulate matter filter
- 专利标题(中): 颗粒物过滤器分层再生的系统和方法
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申请号: US12539838申请日: 2009-08-12
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公开(公告)号: US08511069B2公开(公告)日: 2013-08-20
- 发明人: Eugene V. Gonze , Michael J. Paratore, Jr. , Garima Bhatia
- 申请人: Eugene V. Gonze , Michael J. Paratore, Jr. , Garima Bhatia
- 专利权人: GM Global Technology Operations LLC
- 当前专利权人: GM Global Technology Operations LLC
- 主分类号: F01N3/00
- IPC分类号: F01N3/00 ; F01N3/02 ; F02B27/04
摘要:
A method for controlling an engine includes receiving a request to regenerate a particulate matter filter and regulating, in response to the request, operation of the engine and an electric heater that heats an inlet surface of the filter such that for a first period, the heater maintains the inlet surface within a first temperature range above a regeneration temperature of the filter and combustion of a first mass of accumulated PM within the filter is initiated, for a second period following the first period, exhaust cools the inlet surface to within a second temperature range below the regeneration temperature and combustion of the first mass is inhibited, and for a third period following the second period, the inlet surface is maintained within a third temperature range above the regeneration temperature and a second mass of the accumulated PM is combusted. A related control system is also provided.
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