System for determining a gear ratio change for an automatic tran

Details System for determining a gear ratio change for an automatic tran System for determining a gear ratio change for an automatic tran

1996-08-05

1998-02-10

Ta, Khoi Q.

Interrelated power delivery controls, including engine control

Transmission control

Control by sensed ambient condition, pattern indicia,...

364424027, 364424094, 477901, F16H 5960, F16H 5962, G06F 1900

Patent

active

057163014

ABSTRACT:
The invention is based on an adaptive transmission control wherein changes in the gear ratio of the automatic transmission are determined in dependence upon the detected position of the accelerator pedal actuated by the driver or variables associated therewith and in dependence upon the vehicle straight-line speed and/or the output rpm of the transmission and/or the motor rpm or variables associated therewith. Also, an adaptive variable is determined which adapts the changes of the transmission gear ratio at least to the driving situation then present. The essence of the invention is that the path data of a navigation system is used to determine the above-mentioned adaptation variable. The navigation system is a known map-supported navigation system. In this way, it is advantageously possible to precisely detect the present as well as future driving and environmental situations to which the vehicle is just then subjected or will be subjected in the near future. Accordingly, a very precise estimate of the then existing driving or environmental situation is obtained to which the vehicle is just then subjected or will be subjected in the near future. Shifting strategy can be adapted to these present and future driving situations.

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patent: 5648898 (1997-07-01), Moore-McKee et al.
patent: 5661650 (1997-08-01), Sekine et al.
"Die Adaptive Getriebesteuerung fur die Automatikgetriebe der BMW Fahrzeuge Zwolfzylindermotor" by Andreas Welter, et al. Automobiltechnische Zeitschrift 94 (1992) pp. 428-435.
"Die Adaptive Getriebesteuerung fur BMW-Automobile" by Andreas Welter et al Automobiltechnische Zeitschrift 95 (1993) pp. 420-434.
"Electronics as your Copilot" by C. O'Malley, Popular Science, Sep. (1991), pp. 66 to 69.

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