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1. (WO2011157481) METHOD FOR OPERATING A DRIVE TRAIN

Pub. No.:    WO/2011/157481    International Application No.:    PCT/EP2011/057167
Publication Date: Dec 22, 2011 International Filing Date: May 5, 2011
IPC: B60K 25/02
B60W 10/06
B60W 10/30
B60W 30/18
F02B 67/06
Applicants: ZF FRIEDRICHSHAFEN AG
BANERJEE, Alexander
HUNOLD, Bernard
Inventors: BANERJEE, Alexander
HUNOLD, Bernard
Title: METHOD FOR OPERATING A DRIVE TRAIN
Abstract:
The invention relates to a method for operating a drive train comprising an internal combustion engine (1) and a transmission (3) connected between the internal combustion engine (1) and an output drive (2), wherein an auxiliary output drive (5) on the engine side can be coupled to the internal combustion engine (1) via a continuously variable transmission (8) and a generator (9) in such a way that, when the internal combustion engine is running, the generator can be driven at a constant rotational speed irrespective of the rotational speed of said internal combustion engine, in order to supply the auxiliary output drive (5) with a defined electric supply via the generator (9). A state variable of the auxiliary output drive (5) is controlled between limiting values via a controller (6), wherein the control of the state variable in the auxiliary output drive (5) is carried out as a function of the current actual value and as a function of the limiting values of the state variable and as a function of a current and/or future driving situation in such a way that parameters for a supply of energy to the auxiliary output drive (5) and therefore for a corresponding removal of energy from the internal combustion engine (6) are determined in the controller (6) as a function of said input data.