Gas separation: processes – With control responsive to sensed condition – Pressure sensed
Reexamination Certificate
2008-05-20
2008-05-20
Greene, Jason M. (Department: 1797)
Gas separation: processes
With control responsive to sensed condition
Pressure sensed
C095S022000, C095S273000, C096S417000, C096S418000, C096S419000, C096S421000, C055S282300, C055S283000, C055S385300, C055S523000, C055SDIG010, C055SDIG030, C060S274000, C060S295000, C060S297000, C060S311000, C701S102000, C116SDIG025
Reexamination Certificate
active
11046166
ABSTRACT:
A method and system for preventing or minimizing false back pressure faults caused by a new particulate filter in an engine exhaust system. When a new particulate filter is placed in an engine exhaust system, the normal back pressure threshold for the fault detection system is increased by a new filter offset amount. Back pressure faults at the normal level are not recorded for a limited period of engine operation and only records back pressure faults that exceed the normal back pressure threshold by the value of the new filter offset.
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Avery, Jr. Richard M.
Letang Dennis M.
Brooks & Kushman P.C.
Detroit Diesel Corporation
Greene Jason M.
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