US 12,435,490 B2
Electro-hydraulic controlled excavator travel to tool control priority function
Michael Aron Viergutz, Bloomington, IL (US); Kensuke Tanaka, Kobe (JP); Atsunori Shimamoto, Akashi (JP); and Matthew James Beschorner, Plainfield, IL (US)
Assigned to Caterpillar SARL, Geneva (CH)
Filed by Caterpillar SARL, Geneva (CH)
Filed on Jun. 30, 2022, as Appl. No. 17/854,113.
Prior Publication US 2024/0003118 A1, Jan. 4, 2024
Int. Cl. E02F 9/22 (2006.01); F15B 11/17 (2006.01); F15B 21/08 (2006.01)
CPC E02F 9/2242 (2013.01) [F15B 11/17 (2013.01); F15B 21/082 (2013.01); F15B 2211/6658 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A work machine comprising:
a frame;
transportation devices coupled to the frame;
a work tool coupled to the frame;
a hydraulic system to provide power to operate the transportation devices and the work tool; and
a controller configured to operate in a first mode wherein a first hydraulic pump is configured to deliver hydraulic fluid to the transportation devices and a second hydraulic pump is configured to deliver hydraulic fluid to the work tool, and wherein the controller is configured to operate in a second mode wherein the work tool is provided with hydraulic fluid from both the first and the second hydraulic pumps such that the work tool gets priority of the hydraulic fluid over the transportation devices and receives the hydraulic fluid before any hydraulic fluid flows to the transportation devices.
 
8. A work machine comprising:
a frame;
transportation devices coupled to the frame;
a work tool coupled to the frame;
a hydraulic system to provide power to operate the transportation devices and the work tool; and
a controller configured to operate in a first mode wherein a first hydraulic pump is configured to deliver hydraulic fluid to the transportation devices and a second hydraulic pump is configured to deliver hydraulic fluid to the work tool, and wherein the controller is configured to operate in a second mode wherein the work tool is provided with hydraulic fluid from both the first and the second hydraulic pumps, wherein an operator has a choice to enable a single hydraulic pump for the transportation devices or to absolve the transportation devices and provide needed hydraulic flow to the work tool from the first and the second hydraulic pumps.
 
9. A system for controlling operation of a work machine, comprising:
a hydraulic system to provide power to operate transportation devices of the work machine and a work tool of the work machine; and
a controller configured to operate in a first mode wherein a first hydraulic pump is configured to deliver hydraulic fluid to the transportation devices and a second hydraulic pump is configured to deliver hydraulic fluid to the work tool, and wherein the controller can is configured to operate in a second mode wherein the work tool is provided with hydraulic fluid from both the first and the second hydraulic pumps such that the work tool gets priority of the hydraulic fluid over the transportation devices and receives the hydraulic fluid before any hydraulic fluid flows to the transportation devices.
 
15. A system for controlling operation of a work machine, comprising:
a hydraulic system to provide power to operate transportation devices of the work machine and a work tool of the work machine; and
a controller configured to operate in a first mode wherein a first hydraulic pump is configured to deliver hydraulic fluid to the transportation devices and a second hydraulic pump is configured to deliver hydraulic fluid to the work tool, and wherein the controller is configured to operate in a second mode wherein the work tool is provided with hydraulic fluid from both the first and the second hydraulic pumps, wherein an operator has a choice to enable a single hydraulic pump for the transportation devices or to absolve the transportation devices and provide needed hydraulic flow to the work tool from the first and the second hydraulic pumps.