Method for operating a hydrostatic-mechanical power split transmission and a hydrostatic-mechanical power split transmission

摘要

A method is proposed for operating a hydrostatic-mechanical power split transmission (3) of a work machine (2) comprising a mechanical power branch (9) and a hydrostatic power branch (7) with a variator (4), in which the rotational speed of a variator output shaft (8 ) is controlled by an electronic control unit (14) on the basis of a temporal waveform (20) of a control signal: According to the invention, for at least one load change situation (22) in which the speed of the Variatorabtriebswelle (8) is changed by a load change, the present load on at least a sensor (15, 16, 17) is determined and a function of the determined load, a correction value (24) is determined, with which the control signal is adapted to a correction time (27), so that by the load change situation (22) conditional speed change of the variator output shaft ( 8) is reduced. Furthermore, a hydrostatic-mechanical power transmission (3) is proposed.