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US 9,157,785 B2Granted
Method to determine vehicle weight
AssigneeAGCO International GmbH
InventorMartin Brenninger
Life of this patent
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AssigneeAGCO International GmbH
InventorMartin Brenninger
Estimating the term…
A system is provided for determining the current weight of a vehicle and any implement or trailer being towed or carried thereby. The system has an electronic control unit and means to determine the current value of vehicle operating parameters indicative of the current wheel output torque and acceleration of the vehicle. These current parameter values are forwarded to the electronic control unit so that the unit can calculate the current vehicle weight from a predetermined relationship involving wheel output torque, vehicle acceleration and other known current operating parameters of the vehicle. The other known current operating parameters of the vehicle are wheel rolling radius, angle of inclination of the vehicle, gravitational acceleration and rolling resistance of the wheels. When the vehicle includes a hydrostatic mechanical CVT which has a hydraulic drive circuit in which a hydraulic pump supplies pressurized fluid to a hydraulic motor, the level of pressure in the drive circuit provides an indication of the current wheel output torque.
A system for determining a current weight of a vehicle and any implement or trailer being towed or carried thereby, the system comprising an electronic control unit to determine a current value of vehicle operating parameters indicative of a current wheel output torque and acceleration of the vehicle, said current parameter values being forwarded to the electronic control unit so that the unit can calculate the current vehicle weight from a predetermined relationship involving wheel output torque, vehicle acceleration and other known current operating parameters of the vehicle, wherein the vehicle includes a continuously variable transmission (CVT) which has a hydraulic drive circuit fully or partly transmitting torque to vehicle wheels in which a hydraulic pump supplies pressurized fluid to a hydraulic motor, the level of pressure in the drive circuit providing an indication of the current wheel output torque, and wherein the CVT is a hydrostatic mechanical split CVT has a mechanic and an hydrostatic branch to supply torque to the vehicle wheels.
Dependencies are inferred from the claim text.