×

Electro-hydraulic auxiliary mode control

  • US 8,621,855 B2
  • Filed: 06/08/2007
  • Issued: 01/07/2014
  • Est. Priority Date: 06/08/2007
  • Status: Active Grant
First Claim
Patent Images

1. A method of operating a work machine, the work machine comprising an auxiliary electro-hydraulic circuit for operating a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, the method comprising:

  • selecting between a proportional mode and a continuous mode to obtain a selected mode, andelectrically operating the auxiliary electro-hydraulic circuit in the selected mode in response to operation of an auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, wherein;

    the selecting comprises receiving a selected-mode signal representative of the selected mode, and at least one control signal representative of the displacement of the auxiliary input device, determining which of the proportional mode or the continuous mode is selected based on the selected-mode signal, and toggling between the proportional mode and the continuous mode in response to successive actuation of the auxiliary mode selector, andthe operating comprises operating the auxiliary electro-hydraulic circuit in the selected mode in response to the at least one control signal.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×