Method and system for controlling an engine during diesel particulate filter regeneration at idle conditions
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United States of America Patent
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Apr 23, 2013
Grant Date -
Sep 1, 2011
app pub date -
Feb 26, 2010
filing date -
Feb 26, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method and control system for controlling an engine during diesel particulate filter regeneration includes a diesel particulate filter (DPF) regeneration request module that generates a DPF regeneration request signal and an idle condition module that generates an idle condition signal when the engine is at an idle condition. A DPF regeneration control module initiates a timer in response to the DPF regeneration request signal and the idle condition signal. The DPF regeneration control module controls the engine oxygen level to a second level less than a first level corresponding to a non-idle speed level, and after a time period, controls the engine to generate oxygen at a third level greater than the second level.
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