Method for setting a transmission ratio to be set and drive system

Abstract

The invention relates to a method for determining a transmission ratio (rcvr) to be set of a continuously variable transmission unit in order to emulate an alternative transmission assembly, and to a corresponding drive system. Firstly, an actual input characteristic variable and an actual output characteristic variable of the continuously variable transmission unit are determined. On the basis of the actual input characteristic variable and the actual output characteristic variable, a theoretical output torque (Mab,th) of the alternative transmission assembly is determined. By taking the theoretical output torque (Mab,th) of the alternative transmission assembly into consideration, the transmission ratio (rcvr) to be set of the continuously variable transmission unit is determined, wherein said transmission ratio (rcvr) is determined in such a way that the driven torque (Mab,ist) produced by the continuously variable transmission unit corresponds to the theoretical output torque (Mab,th). For this purpose, in addition to the continuously variable transmission unit, the drive system has a control unit (16) having a first input and a second input for reading the characteristic variables. Connected to the inputs is a calculation section (30) which, on the basis of the characteristic variables, determines the theoretical output torque (Mab,th) of the alternative transmission assembly. The control unit (16) also has a control section (31), which determines the transmission ratio (rcvr) to be set in such a way that it corresponds to the theoretical output torque (Mab,th).

Description

technical field The invention relates to a method for determining a transmission ratio to be adjusted for an infinitely variable transmission unit for simulating an alternative transmission, as well as a corresponding drive system. Background technique When manipulating or using a steering drive or other drive, a user develops a habit effect over time. This can be understood using the example of a driving drive. For example, if there is a driving drive in the form of an automated powershift transmission, there is also a starting element in addition to the mechanical transmission. For example, a converter can be used. Such converters have certain properties and thus generate the acceleration behavior that the driver is accustomed to. Therefore, when the driver specifies his acceleration desire via the accelerator pedal, the driver expects a certain acceleration behavior. The acceleration characteristic is determined by the rotational speed and torque occurring at the driv...

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Problems solved by technology

This reduces fuel consumption, but results in different acceleration characteristics than ...