Throttle control method and method of selecting powertrain...

Details Throttle control method and method of selecting powertrain... Throttle control method and method of selecting powertrain...

2005-02-15

2005-02-15

Wright, Dirk (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

C477S905000

Reexamination Certificate

active

06855092

ABSTRACT:
An electronic throttle controller adjusts vehicle acceleration based on accelerator pedal movement. The controller compares a rate of change of a pedal voltage with a rate of change of a filtered pedal voltage. The filtered pedal voltage depends on filter alpha values that vary as a function of engine speed divided by vehicle speed. If the rate of change of the pedal voltage exceeds the rate of change of the filtered pedal voltage by a threshold, the controller selects a performance mode. The performance mode determines how the controller adjusts a transmission ratio and power request damping. Additionally, the controller adjusts a duration of the performance mode based on an acceleration condition. The acceleration condition is indicative of whether engine speed, vehicle speed, and pedal position are constant.

REFERENCES:
patent: 5133232 (1992-07-01), Kikuchi et al.
patent: 5182710 (1993-01-01), Tomisawa
patent: 6044318 (2000-03-01), Bourdon et al.

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