Patent ID: 8191798
Filing Date: 2012-06-05
Classification: A01C,A01M,B05B

Abstract:
1. An agricultural field sprayer adapted for forward movement at a vehicle speed over a field, the field sprayer comprising: a sprayer fluid tank supplying a sprayer fluid; sprayer gear for the application of the sprayer fluid; a pump for conveying the sprayer fluid at a sprayer fluid application rate; a supply line connecting the tank with the pump; a return line connecting the pump with the tank; a sprayer line connecting the pump with the sprayer gear; an electric motor drivingly connected to the pump; a first control valve connected to the return line for controlling return of fluid to the tank; a second control valve connected to the sprayer line for controlling flow of sprayer fluid to the sprayer gear; a plurality of section control valves connected to the sprayer line and having selective operating conditions; and an electronic control system connected to the motor, to the first and second control valves, and to the plurality of section control valves and responsive to the vehicle speed and the selective operating conditions of the section control valves for controlling the motor and the first and second control valves as a function of the vehicle speed of the field sprayer and the selective operating conditions of the section control valves; wherein the sprayer fluid application rate while the sprayer fluid is being applied is dependent on both the speed of the motor and the control of at least one of the first and second control valves.