Transmission shift signal for aftertreatment device control

Interrelated power delivery controls – including engine control – Transmission control – Exhaust emission control

Reexamination Certificate

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Reexamination Certificate

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08007404

ABSTRACT:
Discontinuous torque ratio shifts by a transmission can result in complex transient exhaust conditions that can adversely affect exhaust air-fuel ratio control, which can result in ineffective regeneration. In extreme cases, the result can be irreversible damage to exhaust system components. The inventors' concept is to alter either regeneration scheduling or shift scheduling to avoid shifting while regenerating.

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patent: 6866610 (2005-03-01), Ito
patent: 6910329 (2005-06-01), Bunting et al.
patent: 7063642 (2006-06-01), Hu et al.
patent: 2003/0101713 (2003-06-01), Dalla Betta et al.
patent: 2006/0277898 (2006-12-01), McCarthy et al.
patent: 2007/0079603 (2007-04-01), Hu et al.
patent: 2007/0082783 (2007-04-01), Hu et al.
patent: 2008/0006025 (2008-01-01), McCarthy, Jr.
patent: 10338059 (1998-12-01), None

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