Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2007-07-10
2007-07-10
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
Reexamination Certificate
active
11377826
ABSTRACT:
Measured engine inlet air temperature and flow parameters are communicated to an engine controller with a single waveform. A variable frequency digital input signal representative of inlet air flow is combined with a variable amplitude analog signal representative of inlet air temperature, and supplied as a single input signal to the engine controller. The controller includes a buffer circuit that re-creates the variable frequency digital signal from the input waveform for application to an input capture circuit that measures the flow-related frequency, and an analog-to-digital converter that is coordinated with the input capture circuit for sampling the temperature-related amplitude.
REFERENCES:
patent: 4343183 (1982-08-01), Plapp
patent: 5520146 (1996-05-01), Hrovat et al.
patent: 6955080 (2005-10-01), Verdejo
Fayyad Salem Ahmad
Voto Andrew M.
Wassef Andrew A.
Delphi Technologies Inc.
Marshall Paul L.
Vo Hieu T.
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