Adaptive engine speed control system
AssigneeDeere & Company
InventorsZACKARY P. SIPPER, JACOB C. KALLARA, BRENT G. RINHOLM
Life of this patent
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Abstract
An adaptive engine speed control system for a grass mowing machine having an internal combustion engine, a hydrostatic traction drive circuit and a hydraulic mowing circuit for operating a plurality of cutting units. A controller provides a traction feedback output signal if the grass mowing machine is moving at an actual ground speed that is below a pedal based desired ground speed, and uses the traction feedback output signal to command the internal combustion engine to an increased speed above a pedal based engine speed control range.
Claims11
An adaptive engine speed control system, comprising:
- a PID controller commanding an internal combustion engine on a riding greensmower to run at an adaptive engine speed above a pedal based engine speed control range if there is a feedback current output signal indicating at least one of a hydrostatic traction drive circuit and a hydraulic mowing circuit is operating below a desired speed from a feed forward current signal.
An adaptive engine speed control system, comprising:
- an internal combustion engine providing power for an operating mode of a grass mowing machine within a pedal based engine speed control range;
- and
- a controller commanding the engine to run at an engine speed above the pedal based engine speed control range based on a traction feedback signal from a hydrostatic traction drive system.
An adaptive engine speed control system, comprising:
- a grass mowing machine having an internal combustion engine, a hydrostatic traction drive circuit and a hydraulic mowing circuit for operating a plurality of cutting units;
- and
- a controller that provides a traction feedback output signal if the grass mowing machine is moving at an actual ground speed that is below a pedal based desired ground speed;
- the controller using the traction feedback output signal to command the internal combustion engine to an increased speed above a pedal based engine speed control range.
Dependencies are inferred from the claim text.