US 11,939,982 B2
System for distributing particulate material from an agricultural machine
Rex Ruppert, Benson, MN (US); and David Hafvenstein, Benson, MN (US)
Assigned to CNH Industrial America LLC, New Holland, PA (US)
Filed by CNH Industrial America LLC, New Holland, PA (US)
Filed on Dec. 9, 2019, as Appl. No. 16/707,247.
Prior Publication US 2021/0172444 A1, Jun. 10, 2021
Int. Cl. F04D 15/00 (2006.01); A01C 15/04 (2006.01); A01C 21/00 (2006.01); A01C 23/00 (2006.01); F04D 13/04 (2006.01)
CPC F04D 15/0066 (2013.01) [A01C 15/04 (2013.01); A01C 21/005 (2013.01); A01C 23/007 (2013.01); F04D 13/046 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system for distributing particulate material from an agricultural machine, the system comprising:
a fan configured to provide an airflow in a supply line for distributing particulate material;
a hydraulic system configured to drive the fan at a plurality of fan speeds, the hydraulic system comprising:
a hydrostatic drive arrangement including a variable axial piston pump; and
a control system configured to control the hydraulic system, the control system executing a program stored in a non-transient medium operable to:
determine a given product application rate for distributing the particulate material;
determine a given ground speed of the agricultural machine;
determine a fan speed for achieving the given product application rate at the given ground speed; and
control the hydraulic system to drive the fan at the fan speed.