Patent ID: 6386303
Filing Date: 2002-05-14
Classification: A01B,B60K

Abstract:
A method for controlling a drive of a tractor power take-off (PTO) shaft, wherein the PTO shaft can be connected to a drive engine via a PTO clutch, and a tractor possesses a hydraulic power lift to which an implement driven by the PTO shaft can be connected, comprising the following steps:a) actuating a first switch for switching on the PTO shaft, whereby the PTO clutch is engaged by a pulse-width-modulated on/off valve, so as to start in a controlled manner; b) actuating a second switch to an automatic mode, whereby the PTO clutch is disengaged when the power lift is raised; if the lift is not raised, the PTO clutch remains engaged; and c) sensing if the power lift is lowered within a prescribed time interval, whereby the PTO clutch is automatically engaged again, but after this prescribed time interval expires, the PTO clutch does not engage again.