Methods and apparatus to control a dual function work machine

• US 9,441,347 B2
• Filed: 08/05/2013
• Issued: 09/13/2016
• Est. Priority Date: 08/05/2013
• Status: Active Grant

• Current Assignee: Deere & Company
• Original Assignee: Deere & Company
• Inventors: West, Sean P.
• Primary Examiner(s): Cao, Chun
• Assistant Examiner(s): DESAI, SUMIL MANUBHAI
• Application Number:
  US13/959,342
• Publication Number:
  US 20150039163A1
• Time in Patent Office: 1,135 Days
• Field of Search: 701/22, 903/930, 477/5
• US Class Current: 1/1
• CPC Class Codes: B60K 6/12 by means of a chargeable fluidic accumulator
• CPC Class Codes: B60K 6/44 Series-parallel type
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 10/30 including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• CPC Class Codes: B60W 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2300/17 Construction vehicles, e.g. graders, excavators
• CPC Class Codes: B60W 2510/1005 Transmission ratio engaged
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: E02F 3/964 of several tools mounted on one machine E02F3/962 takes precedence
• CPC Class Codes: E02F 9/2075 of the hybrid type for vehicles in general B60W20/00
• CPC Class Codes: E02F 9/2091 Control of energy storage means for electrical energy, e.g. battery or capacitors energy recovery arrangements in hydraulic or pneumatic drives E02F9/2217
• CPC Class Codes: E02F 9/26 Indicating devices E02F5/145 takes precedence
• CPC Class Codes: E02F 9/268 with failure correction follow-up actions
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/93 Conjoint control of different elements

Abstract

Methods and apparatus are disclosed for controlling power for a work machine. An example method disclosed herein includes identifying an energy storage level of an energy storage device; identifying a transmission setting of the work machine; and determining whether to control a function of the work machine using power from the energy storage device or power from a second power source different from the energy storage device based on the energy storage level and the transmission setting.

Claims

1. An apparatus, comprising:

a work machine including a first ground-engagable implement, a second ground-engagable implement, and a ground engaging element, the first ground-engagable implement being independently movable relative to the ground engaging element, the second ground-engagable implement being independently movable relative to the ground engaging element, the ground engaging element to be used to maneuver the work machine, the work machine including;

a seat monitor to identify a seat of the work machine as facing a first direction or a second direction, the first direction indicative of the first ground-engagable implement to be powered, the second direction indicative of the second ground-engagable implement to be powered;

a battery monitor to identify an energy storage level of an energy storage device; and

a power analyzer to;

cause a function of the first ground-engagable implement to be powered using power from the energy storage device and to cause an engine to be shut down when the seat monitor identifies the seat as facing the first direction, a transmission setting of the work machine corresponds to a first transmissions setting, and the energy storage level satisfies a first threshold; and

cause the function of the first ground-engagable implement to be powered using power from an engine and to cause the energy storage device to be charged by the engine when the seat monitor identifies the seat as facing the first direction, the transmission setting of the work machine corresponds to the first transmission setting, and the energy storage level satisfies a second threshold, the first threshold being different than the second threshold.

2. The apparatus of claim 1, wherein the power analyzer is to cause the function of the first ground-engagable implement to be powered using power from the energy storage device when the energy storage level is between a maximum energy state threshold and a minimum energy state threshold and the first transmission setting of the work machine is neutral.

4. The apparatus of claim 1, wherein when the seat monitor identifies the seat as facing the second direction, the power analyzer to control a function of the second ground-engagable implement using power from the engine, when the seat monitor identifies the seat as facing the first direction and the energy storage level satisfies the first threshold, the power analyzer is to shut down the engine when (1) a transmission setting of the work machine is in forward or reverse and (2) an operator station of the work machine is to control the function of the first ground-engagable implement.

5. The apparatus of claim 1, wherein the function is a first function, further including a function selector, the function selector is to disable control of the first function when an operator station is to control a second function of the second ground-engagable implement.

14. The apparatus of claim 1, wherein the first ground-engagable implement is at least one of a backhoe, a loader, a power-take off, a hitch, an implement, or a plow.

15. The apparatus of claim 1, wherein the engine is to be used to drive the ground engaging element.

16. The apparatus of claim 1, wherein the ground engaging element includes wheels.

17. The apparatus of claim 1, wherein the work machine includes a first end and a second end opposite the first end, the first ground-engagable implement being disposed immediately adjacent the first end, the second ground-engagable implement being disposed immediately adjacent the second end.

18. The apparatus of claim 17, wherein the first ground-engagable implement is a backhoe and the second ground-engagable implement is a loader.

19. The apparatus of claim 1, wherein the first transmission setting is neutral.

3. An apparatus for controlling a work machine, comprising:

a seat monitor to identify a seat of the work machine as facing a first direction or a second direction, the first direction indicative of a ground-engagable implement being powered, the second direction indicative of the ground-engagable implement not being powered;

a battery monitor to identify an energy storage level of an energy storage device; and

a power analyzer to;

control a function of the ground-engagable implement using power from the energy storage device and to cause an engine to be shut down when the seat monitor identifies the seat as facing the first direction, a transmission setting of the work machine corresponds to a transmission setting, and the energy storage level satisfies a first threshold; and

control the function of the ground-engagable implement using power from the engine and to cause the energy storage device to be charged by the engine when the seat monitor identifies the seat as facing the first direction, the transmission setting of the work machine corresponds to the first transmission setting, and the energy storage level satisfies a second threshold, the first threshold being different than the second threshold.

6. An apparatus for controlling a work machine, comprising:

a seat monitor to identify a seat of the work machine as facing a first direction or a second direction, the first direction indicative of a first ground-engagable implement to be powered, the second direction indicative of a second ground-engagable implement to be powered;

a battery monitor to identify an energy storage level of an energy storage device;

a power analyzer to determine to;

control a first function of the first ground-engagable implement using power from the energy storage device and to cause an engine to be shut down when the seat monitor identifies the seat as facing the first direction, a transmission setting of the work machine corresponds to a first transmission setting, and the energy storage level satisfies a first threshold; and

control the first function of the first ground-engagable implement using power from an engine and to cause the energy storage device to be charged by the engine when the seat monitor identifies the seat as facing the first direction, the transmission setting of the work machine corresponds to the first transmission setting, and the energy storage level satisfies a second threshold, the first threshold being different than the second threshold; and

a function selector to disable control of the first function and enable control of a second function of the second ground-engagable implement when the seat monitor identifies the seat as facing the second direction, the engine to be used to power the second function, the energy storage device not to be used to power the second function.

7. A method, comprising:

identifying a seat of a work machine as facing a first direction, the first direction indicative of a first ground-engagable implement to be powered, a second direction of the seat indicative of a second ground-engagable implement to be powered;

identifying an energy storage level of an energy storage device of the work machine as satisfying a first threshold;

causing a function of the first ground-engagable implement to be powered using power from the energy storage device and causing an engine of the work machine to be shut down in response to the seat being identified as facing the first direction, a transmission setting of the work machine corresponds to a first transmission, and the energy storage level satisfying the first threshold;

identifying the energy storage level of the energy storage device of the work machine as satisfying a second threshold, the first threshold being different than the second threshold; and

causing, via a power analyzer;

the function of the first ground-engagable implement to be powered using power from the engine and causing the energy storage device to be charged by the engine in response to the seat being identified as facing the first direction, the transmission setting of the work machine corresponds to a first transmission setting, and the energy storage level satisfying the second threshold, the first ground-engagable implement being independently movable relative to a ground engaging element of the work machine, the ground engaging element to be used to maneuver the work machine.

8. The method of claim 7, wherein the function is to be powered using power from the energy storage device when the energy storage level is between a maximum energy state threshold and a minimum energy state threshold and the first transmission setting of the work machine is neutral.

9. The method of claim 7, further including:

identifying the engine being in an emergency state; and

powering the function using power from the energy storage device until the work machine has reached a safe state.

10. A method for controlling a work machine, comprising:

identifying a seat of a work machine as facing a first direction, the first direction indicative of a first ground-engagable implement to be powered, a second direction of the seat indicative of a second ground-engagable implement to be powered;

identifying an energy storage level of an energy storage device as satisfying a first threshold;

causing a first function of the first ground-engagable implement to be powered using power from the energy storage device and causing an engine to be shut down in response to the seat being identified as facing the first direction, a transmission setting of the work machine corresponding to a first transmission setting, and the energy storage level satisfying the first threshold;

identifying the energy storage level of an energy storage device of the work machine as satisfying a second threshold, the first threshold being different than the second threshold;

causing the first function of the work machine to be powered using power from the engine and causing the energy storage device to be charged in response to the seat being identified as facing the first direction, a transmission setting of the work machine corresponds to a first transmission setting, and the energy storage level satisfying the second threshold; and

disabling control of the first function when an operator station is to control a second function separate from the first function.

11. A tangible computer readable storage medium comprising instructions that when executed cause a work machine to at least:

identify a seat of a work machine as facing a first direction, the first direction indicative of a ground-engagable implement being powered, a second direction of the seat indicative of the ground-engagable implement not being powered;

identify an energy storage level of an energy storage device as satisfying a first threshold;

cause a function of the ground-engagable implement to be powered using power from the energy storage device and cause an engine to be shut down in response to the seat being identified as facing the first direction, a transmission setting of the work machine corresponding to a first transmission setting, and the energy storage level satisfying the first threshold;

identify the energy storage level of the energy storage device as satisfying a second threshold, the first threshold being different than the second threshold; and

cause the function of the ground-engagable implement of the work machine to be powered using power from the engine and cause the energy storage device to be charged by the engine in response to the seat being identified as facing the first direction, the transmission setting of the work machine corresponds to the first transmission setting, and the energy storage level satisfying the second threshold, the ground-engagable implement being independently movable relative to a ground engaging element of the work machine, the ground engaging element to be used to maneuver the work machine.

12. A storage medium of claim 11, wherein the function is to be powered using power from the energy storage device when the energy storage level is between a maximum energy state threshold and a minimum energy state threshold and the first transmission setting of the work machine is neutral.

13. A storage medium of claim 11, wherein the instructions when executed further cause the machine to:

identify the engine as being in an emergency state; and

power the function using power from the energy storage device until the work machine has reached a safe state.