Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-07-04
2006-07-04
Vo, Hieu T. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S179150, C123S1980DA, C701S114000
Reexamination Certificate
active
07072761
ABSTRACT:
An engine shutdown system is provided that includes an engine control module (ECM) (12) having sensors (20, 22, 24, 26, 28, 30, 34, 36) that can activate an engine shutdown sequence. A set of redundant sensors (20′, 22′, 24′, 26′, 28′, 30′, 32′, 34′, 36′) and a redundant engine control module (RECM) (14) can also activate an engine shutdown sequence independent of the ECM. Engine operating parameters are monitored by sensors to determine if one of the engine parameters deviates from an acceptable level. If the engine control determines that a parameter has exceeded a predetermined level, an engine shutdown signal may be generated by either the ECM or RECM that may cut off the fuel supply, interrupt an ignition circuit, or activate external engine shutdown devices and may also activate alarm and message panels. A redundant engine shutdown system is also provided to disable the primary engine control unit.
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BSI, British Standard, Reciprocating Internal Combustion Engines—Safety Requirements for design and construction of engines for use in potentially explosives atmospheres—Part 1: Group II engines for use in flammable gas and vapour atmospheres.
Hawkins Jeffery S.
Ritter Curtis P.
Brooks & Kushman P.C.
Detroit Diesel Corporation
Vo Hieu T.
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