DRIVE SYSTEM, IN PARTICULAR FOR A SELF-PROPELLED CONSTRUCTION MACHINE, IN PARTICULAR A SOIL COMPACTOR
First Claim
1. A drive system for a self-propelled construction machine, comprising:
- a drive unit,at least one hydraulic circuit with a hydraulic pump driven by the drive unit,a hydraulic drive support unit with a hydraulic pump/motor assembly and at least one pressure fluid reservoir, wherein the hydraulic pump/motor assembly is, or can be, drivingly coupled with the drive unit or/and at least one hydraulic circuit, wherein the hydraulic pump/motor assembly can be driven in a charge operating mode by the drive unit or/and at least one hydraulic circuit as a pump to charge at least one pressure fluid reservoir and can be operated in a drive support operating mode as a motor to provide a drive support torque for the hydraulic pump of at least one hydraulic circuit,wherein the hydraulic pump/motor assembly can be operated in a recirculation operating mode as a pump to convey fluid out of a fluid reservoir and into a fluid reservoir.
1 Assignment
0 Petitions
Accused Products
Abstract
A drive system, in particular for a self-propelled construction machine, in particular a soil compactor, comprises a drive unit, at least one hydraulic curcuit with a hydraulic pump driven by the drive unit, a hydraulic drive support unit with a hydraulic pump/motor assembly, and at least one pressure fluid reservoir, wherein the hydraulic pump/motor assembly is, or can be, drivingly coupled with the drive unit and/or at least one hydraulic circuit, wherein the hydraulic pump/motor assembly can be operated in a charging operating mode by the drive unit and/or at least one hydraulic circuit as a pump to charge at least one pressure fluid reservoir, and be driven in a drive support operating mode as a motor to provide a drive support torque for the hydraulic pump of at least one hydraulic circuit, characterized in that the hydraulic pump/motor assembly is operated in a recirculation operating mode as a pump to convey fluid out of a fluid reservoir and into a fluid reservoir.
10 Citations
20 Claims
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1. A drive system for a self-propelled construction machine, comprising:
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a drive unit, at least one hydraulic circuit with a hydraulic pump driven by the drive unit, a hydraulic drive support unit with a hydraulic pump/motor assembly and at least one pressure fluid reservoir, wherein the hydraulic pump/motor assembly is, or can be, drivingly coupled with the drive unit or/and at least one hydraulic circuit, wherein the hydraulic pump/motor assembly can be driven in a charge operating mode by the drive unit or/and at least one hydraulic circuit as a pump to charge at least one pressure fluid reservoir and can be operated in a drive support operating mode as a motor to provide a drive support torque for the hydraulic pump of at least one hydraulic circuit, wherein the hydraulic pump/motor assembly can be operated in a recirculation operating mode as a pump to convey fluid out of a fluid reservoir and into a fluid reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 17, 18, 19, 20)
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14. A method of operating a drive system for a self-propelled construction machine, the drive system comprising:
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a drive unit, at least one hydraulic circuit with a hydraulic pump driven by the drive unit, a hydraulic-drive support unit with a hydraulic pump/motor assembly and at least one pressure fluid reservoir; wherein the hydraulic pump/motor assembly is, or can be, drivingly coupled with the drive unit or/and at least one hydraulic circuit wherein the hydraulic pump/motor assembly can be operated in a charging operating mode by the drive unit or/and at least one hydraulic circuit as a pump to charge at least one pressure fluid reservoir and be operated in a drive support operating mode as a motor to provide a drive support torque for the hydraulic pump of at least one hydraulic circuit, in which procedure the hydraulic pump/motor assembly can be operated in a recirculation operating mode as a pump to convey fluid out of a fluid reservoir and into a fluid reservoir. - View Dependent Claims (15, 16)
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Specification