Engine speed control for a low power hydromechanical...

Details Engine speed control for a low power hydromechanical... Engine speed control for a low power hydromechanical...

2006-12-08

2010-12-28

Tran, Khoi (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

C701S051000, C701S053000, C701S058000, C701S060000, C701S061000, C701S067000, C477S052000, C477S062000, C477S115000, C477S118000, C477S156000, C192S003310

Reexamination Certificate

active

07860631

ABSTRACT:
A method of operating a transmission of a vehicle. The method includes determining an open loop ratio percentage from an engine RPM input signal and a brake input signal using a first algorithm. Determining a closed loop ratio percentage from the engine RPM input signal, a vehicle RPM input signal and a throttle input signal using a second algorithm. Summing the open loop percentage and closed loop ratio percentage to calculate a ratio command percentage that is used to sum with a swashplate input to actuate a swashplate positioner and operate the transmission.

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