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AssigneeSiemens Aktiengesellschaft
InventorsGeorg Grassl, Florian Gutknecht-Stoehr, Gregor Probst, Martin Rampeltshammer
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A control unit (14) for regulating the transmission ratio of a transmission (8) which is located in a drive train together with a motor (1), in order to obtain braking assistance through the braking torque of the motor (1) is disclosed. The control unit comprises several signal inputs for receiving the desired braking torque (MSET) and the number of revolutions (NACT) of the motor (1) and/or the vehicle speed; a calculation unit for determining the suitable transmission ratio (ü) of the transmission (8) for achieving the desired braking torque in accordance with the desired braking torque (MSET) and the number of revolutions (NACT) or the vehicle speed; and a signal output for outputting a control signal (ü) which determines the transmission ratio of the transmission (8). An electrical generator (5) which feeds a battery (6) and which has an additional braking torque is located in the drive train. A measuring unit is provided for determining the charge status of the battery (6), this measuring unit being connected to the calculation unit on the output side in order to regulate the transmission ratio of the transmission according to the charge status of the battery (6).
A control unit for setting the transmission ratio of a transmission which is arranged in a drive train together with an engine and an electric generator, in order to obtain braking assistance through the braking torque of the engine, and to bring about the breaking torque of the electrical generator, the generator feeding a battery comprising
A method for operating a control unit for setting the transmission ratio of a transmission, comprising the steps:
Dependencies are inferred from the claim text.