METHOD FOR DETERMINING TRACTOR TRACTION FORCE Russian patent published in 2024 - IPC G01L5/13 

FIELD: transport engineering.

SUBSTANCE: when implementing the method, a tractor with a manual transmission is prepared, a force transducer is installed in the coupling device, to which a measuring device is connected. After this, start the engine and select the gearbox speed range recommended for performing the production operation. Then they engage the first gear of the selected speed range and begin to move, successively increase the gear within the selected speed range and increase the speed of the tractor, at the same time in each gear the maximum crankshaft rotation speed is set with the maximum fuel supply to the engine. In this case, the resistance forces of the aggregated machine set the engine load corresponding to the rated crankshaft rotation speed at maximum fuel supply, and record the instantaneous values of the tractor traction force with a period of 0.1 s for at least 20 s. Based on the obtained values of the tractor traction force for each gear, the average value for the measurement period is separately calculated, as well as the ratio of the average value of the tractor traction force for each gear to the transmission gear ratio corresponding to this gear. Then the obtained values of the ratio of tractor traction forces to the corresponding values of transmission gear ratios in each gear are compared and the maximum value is determined, and the tractor traction force in each gear is calculated using the formula.

EFFECT: reducing labour intensity and increasing the efficiency of traction force measurements.

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