METHOD AND DEVICE FOR automatic selection of speeds in a regime, electrically controlled, a tractor or equivalent primary box changes.

摘要

The invention relates to a method for selecting AUTOMATIC MARGIN RATE IN A PRE-TRANSMISSION (3) CONTROLLED ELECTRICALLY IN A TRACTOR OR EQUIVALENT IN WHICH force is transmitted from the engine (1) SHAFT / AXLE ( 6) THROUGH A drive clutch (2), through said PRE-gEARBOX TWO-SPEED (3), and through a MECHANICAL gEARBOX multispeed (4). IN THE METHOD THE SPEED OF ROTATION (14) ENGINE (1) and pedal position controller (17) TO DETERMINE ENGINE SPEED FOR A POSITION OF SUCH PEDAL CONTROLLER, AND METHOD IS MEASURED THE SPEED GEARBOX (13) proportional to the speed of rotation of the driving wheels (8) and speed ABSOLUTE REAL (15) TRACTOR TO DETERMINE THE wheelspin dRIVING measured. In the method according to the invention, the speed of rotation of a motor LOADED (1) with a corresponding PEDAL POSITION REGULATOR compared with the rotation speed ENGINE DOWNLOADED (1). IN ADDITION, THE SLIDING REAL WHEEL DRIVE (8) is compared with a threshold value SLIDING DEFAULT AND AT THE SAME TIME, CHECK IF THE TRACTOR SPEED INCREASES OR DECREASES IN THE TIME SPECIFICALLY REFERRED TO AS WELL WHEN MEASURED VALUES STORED a predetermined relationship with pre-programmed values, the transmission rate of the pre-tRANSMISSION (3) aUTOMATICALLY ENGAGED TO A speed range higher or lower. The invention also relates to a control system that uses the method.