Hydrostatic traction drive, mobile working machine having the traction drive, and method for supplying data

Patent metadata

Field	Value
Publication number	US-11073208-B2
Application number	US-201916599726-A
Country	US
Kind code	B2
Filing date	Oct 11, 2019
Priority date	Oct 15, 2018
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A hydrostatic traction drive for a mobile working machine includes a first hydraulic machine coupled to a drive machine, a second hydraulic machine arranged with the first hydraulic machine in a hydraulic circuit and coupled to an output, and an electronic control device. A characteristic diagram of a setpoint driving behavior of the mobile working machine is stored in the electronic control device and is parameterized at least in accordance with at least one driving request.

First claim

What is claimed is:

1. A hydrostatic traction drive for a mobile working machine, comprising:
a first hydraulic machine coupled to a drive machine;
a second hydraulic machine arranged with the first hydraulic machine in a hydraulic circuit and coupled to an output; and
an electronic control device storing a characteristic diagram of a setpoint driving behavior of the mobile working machine, the stored characteristic diagram is dimensionless with respect to at least one characteristic of the mobile working machine,
wherein the electronic control device is configured to generate a dimensioned setpoint value using the stored characteristic diagram and at least one driving request.

2. The traction drive according to claim 1 , wherein the electronic control device is further configured to generate the dimensioned setpoint using a speed of the traction drive or of the mobile working machine.

3. The traction drive according to claim 1 , wherein:
the stored characteristic diagram of the setpoint driving behavior maps a setpoint traction force; and
the at least one characteristic of the mobile working machine is a speed-dependent maximum traction force of the traction drive or of the mobile working machine.

4. The traction drive according to claim 1 , wherein the at least one characteristic of the mobile working machine is stored in the electronic control device.

5. The traction drive according to claim 1 , wherein the setpoint value is acquired from the stored characteristic diagram of the setpoint driving behavior by the electronic control device by multiplying the stored characteristic diagram with the at least one characteristic of the mobile working machine.

6. The traction drive according to claim 1 , wherein the stored characteristic diagram of the setpoint driving behavior contains, at least for a speed equal to zero, a setpoint traction which is parameterized using the at least one driving request.

7. The traction drive according to claim 1 , wherein the stored characteristic diagram of the setpoint driving behavior includes, for at least one loading force, a setpoint final speed which is parameterized using the at least one driving request.

8. The traction drive according to claim 1 , wherein the stored characteristic diagram of the setpoint driving behavior includes a loading force sensitivity.

9. The traction drive according to claim 8 , wherein the loading force sensitivity includes, for the at least one driving request, a speed change which is parameterized in accordance with a loading force change.

10. The traction drive according to claim 1 , wherein the stored characteristic diagram of the setpoint driving behavior is stored after having been divided in a parameterized fashion into a plurality of driving ranges.

11. The traction drive according to claim 10 , wherein the stored characteristic diagram of the setpoint driving behavior has, in each drive range of the driving ranges, a constant gradient with respect to the at least one driving request and/or a speed of the mobile working machine.

12. A mobile working machine, comprising:
a hydrostatic traction drive including
a first hydraulic machine coupled to a drive machine,
a second hydraulic machine arranged with the first hydraulic machine in a hydraulic circuit and coupled to an output, and
an electronic control device storing a characteristic diagram of a setpoint driving behavior of the mobile working machine, the stored characteristic diagram is dimensionless with respect to at least one characteristic of the mobile working machine,

wherein the electronic control device is configured to generate a dimensioned setpoint using the stored characteristic diagram and at least one driving request.

13. A method for supplying data to an electronic control device of a hydrostatic traction drive for a mobile working machine, comprising:
standardizing a characteristic diagram of a setpoint driving behavior of the mobile working machine such that the characteristic diagram is dimensionless with respect to at least one characteristic of the mobile working machine;
storing the standardized characteristic diagram of the setpoint driving behavior in the electronic control device of the hydrostatic traction drive; and
acquiring with the electronic control device a setpoint value of the setpoint driving behavior using the stored standardized characteristic diagram by multiplying the stored standardized characteristic diagram with the at least one characteristic of the mobile working machine.

14. The method according to claim 13 , further comprising:
transferring the setpoint driving behavior to another type of the traction drive or of the working machine or to another model of a same type of the working machine; and
acquiring a further setpoint value for the other type of the traction drive or of the working machine or the other model of a same type of the working machine by multiplying the standardized characteristic diagram with at least one characteristic of the other type or of the other model, the at least one characteristic of the other type or of the other model is the same type characteristic as the at least one characteristic of the mobile working machine.

15. The method according to claim 13 , further comprising:
parameterizing the characteristic diagram using at least one driving request, and
evaluating the standardized characteristic diagram using actual values of the at least one driving request and a speed, prior to acquiring the setpoint value of the setpoint driving behavior using the stored standardized characteristic diagram.

Assignees

• Bosch Gmbh Robert

Inventors

• Schleyer Markus
• Mutschler Steffen

Classifications

• F16H39/02

  with liquid motors at a distance from liquid pumps · CPC title

• F16H59/18

  dependent on the position of the accelerator pedal · CPC title

• B60W40/105 Primary

  Speed · CPC title

• F16H61/40

  hydrostatic · CPC title

• F16H61/47 Primary

  for achieving a target output speed · CPC title