Drive system for a machine
First Claim
Patent Images
1. A machine, comprising:
- a first hydraulic pump;
one or more hydraulic implements connected to the first hydraulic pump;
a first hydraulic motor connected to the first hydraulic pump;
a second hydraulic pump;
a second hydraulic motor connected to the second hydraulic pump;
one or more propulsion devices; and
drive-system controls operable to selectively cause the first hydraulic motor to supply power to one or more of the propulsion devices and to selectively cause the second hydraulic motor to supply power to one or more of the propulsion devices.
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Abstract
A machine, including a hydraulic pump and one or more hydraulic implements connected to the hydraulic pump. The machine may also include a hydraulic motor connected to the hydraulic pump and one or more propulsion devices. Additionally, the machine may include drive-system controls operable to selectively cause the hydraulic motor to supply power to one or more of the propulsion devices.
27 Citations
22 Claims
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1. A machine, comprising:
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a first hydraulic pump; one or more hydraulic implements connected to the first hydraulic pump; a first hydraulic motor connected to the first hydraulic pump; a second hydraulic pump; a second hydraulic motor connected to the second hydraulic pump; one or more propulsion devices; and drive-system controls operable to selectively cause the first hydraulic motor to supply power to one or more of the propulsion devices and to selectively cause the second hydraulic motor to supply power to one or more of the propulsion devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating a machine, comprising:
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transmitting power to one or more propulsion devices of the machine, including selectively operating a first hydraulic motor with fluid from a first hydraulic pump, and transmitting power produced by the first hydraulic motor to one or more of the propulsion devices of the machine, and selectively operating a second hydraulic motor with fluid from a second hydraulic pump, and transmitting power produced by the second hydraulic motor to one or more of the propulsion devices; and selectively supplying fluid from the first hydraulic pump to one or more hydraulic implements of the machine. - View Dependent Claims (11, 12, 13, 14)
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15. A machine, comprising:
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a first hydraulic motor; a second hydraulic motor; a propulsion device; drive-system controls configured to execute a control method, including; selectively operating in a low-speed-propulsion mode, wherein the first hydraulic motor, but not the second hydraulic motor, supplies power to the propulsion device and drives the propulsion device at a first speed; selectively operating in a high-speed-propulsion mode, wherein the first hydraulic motor and the second hydraulic motor both supply power to the propulsion device and drive the propulsion device at a second speed, higher than the first, including during straight-line propulsion of the machine, wherein the high-speed-propulsion mode provides the highest propulsion speed range of the machine. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification