Torque-setting system for vehicle with continuously variable tra

Details Torque-setting system for vehicle with continuously variable tra Torque-setting system for vehicle with continuously variable tra

1993-07-02

1995-05-09

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

477 46, F16H 5936, F16H 5900, B60K 4114

Patent

active

054135400

ABSTRACT:
An apparatus for adjusting the output torque, or the output power, of a continuously variable transmission in vehicles propelled by combustion engines to a predetermined value, has a calculating unit (15) for setting a target value for the output torque or power M ab Soll as a function of an accelerator position (14;2) and vehicle speed (nab). An engine torque target value is calculated (units 18, 19, 20) as a function of the so value and an actual or instantaneous transmission ratio value or speed (u n ist). Target values of a transmission ratio are calculated in a unit (16), including a look-up table or an algorithm for storing or calculating transmission ratio values as a function of transmission output speed and of the accelerator pedal position (14;2) or the transmission output torque target value in accordance with a predeterminable engine operating strategy (e.g. optimum fuel efficiency, or performance, or driving comfort.

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Robert Bosch GmbH, Automotive Handbook, 2nd English Edition, pp. 1-5 & 461-471, publ. by RB/KH/VDT, Stuttgart, Germany, 1986.

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