Apparatus for communicating inlet air parameters of an...

Details Apparatus for communicating inlet air parameters of an... Apparatus for communicating inlet air parameters of an...

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

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