Method and switch for controlling exhaust gas temperature

Details Method and switch for controlling exhaust gas temperature Method and switch for controlling exhaust gas temperature

2007-06-01

2008-09-16

Wolfe, Jr., Willis R. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S676000

Reexamination Certificate

active

07426433

ABSTRACT:
A method for controlling exhaust gas temperature of a combustion engine comprising: setting predefined high and low exhaust temperatures; using at least one sensor to measure exhaust gas temperature; using computer instructions to instruct a processor to compare the measured temperature to the predefined high and low exhaust temperatures, determine a change between a first measured temperature and a second measured temperature over a small defined time interval, multiply the change by a factor that coincides with an internal lag time of the at least one sensor to provide a forecasted exhaust gas temperature, and control voltage to at least one accessory of the combustion engine to reduce the exhaust gas temperature when the forecasted exhaust gas temperature reaches or exceeds the predefined high exhaust temperature, or to increase the exhaust gas temperature when the forecasted exhaust gas temperature reaches the predefined low exhaust temperature.

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