GB2611757A - Automatic determination of mode of operation of a work vehicle - Google Patents
Automatic determination of mode of operation of a work vehicle Download PDFInfo
- Publication number
- GB2611757A GB2611757A GB2114583.4A GB202114583A GB2611757A GB 2611757 A GB2611757 A GB 2611757A GB 202114583 A GB202114583 A GB 202114583A GB 2611757 A GB2611757 A GB 2611757A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mode
- heavy lift
- work vehicle
- standard
- event
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 31
- 230000007935 neutral effect Effects 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07572—Propulsion arrangements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
- E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2253—Controlling the travelling speed of vehicles, e.g. adjusting travelling speed according to implement loads, control of hydrostatic transmission
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
- E02F9/264—Sensors and their calibration for indicating the position of the work tool
- E02F9/265—Sensors and their calibration for indicating the position of the work tool with follow-up actions (e.g. control signals sent to actuate the work tool)
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
A method of automatically determining a mode of operation of a work vehicle comprising a hydraulic lifting apparatus 510 comprises determining lifting criteria, comprising a load value of a load on the lifting apparatus based on a hydraulic pressure 550 and automatically selecting the mode of operation based on the lifting criteria. In an event that the load value is above a threshold load, the mode of operation is a heavy lift mode comprising a heavy lift mode relief pressure on a relief valve 570 and a heavy lift mode vehicle speed. In an event that the load value is below the threshold load, the mode of operation is a standard mode comprising a standard mode relief pressure and a standard mode vehicle speed. The heavy lift mode relief pressure is higher than the standard mode relief pressure, and the heavy lift mode vehicle speed is lower than the standard mode vehicle speed. The load value may be detected continuously or at regular intervals.
Description
AUTOMATIC DETERMINATION OF MODE OF OPERATION OF A WORK VEHICLE
Field of the disclosure
The disclosure relates to the field of work vehicles comprising hydraulic lifting apparatus.
Background
It is known to operate work vehicles with hydraulic lifting apparatus in a heavy lift mode. The user selects the heavy lift mode prior to lifting a load. The heavy lift mode sets the relief pressure to a higher value than when the work vehicle is not in heavy lift mode, to enable more effective lift operation. The heavy lift mode also sets the engine speed to a lower value than when the work vehicle is not in heavy lift mode, for stable lift operation.
A user of a work vehicle is unlikely to want to use the lifting apparatus continuously. It is more likely that the user will use the lifting apparatus to lift one load, and then move the work vehicle to the next load. The heavy lift mode means that when travelling between lift operations, the engine speed remains at the lower engine speed even though the extra stability is not currently required. If the user wishes to turn the heavy lift mode on or off they must do so manually, which is time consuming if the lift operations are short and/or frequent.
Summary of the disclosure
Against this background, there is provided a method of automatically determining a mode of operation of a work vehicle comprising a hydraulic lifting apparatus. The method comprises determining lifting criteria, wherein the lifting criteria comprises a load value of a load on the lifting apparatus based on a hydraulic pressure. The method further comprises automatically selecting the mode of operation based on the lifting criteria. In an event that the load value is above a threshold load, the mode of operation is a heavy lift mode comprising a heavy lift mode relief pressure on a relief valve and a heavy lift mode vehicle speed. In an event that the load value is below the threshold load, the mode of operation is -2 -a standard mode comprising a standard mode relief pressure and a standard mode vehicle speed. The heavy lift mode relief pressure is higher than the standard mode relief pressure, and the heavy lift mode vehicle speed is lower than the standard mode vehicle speed.
There is also provided a work vehicle configured to operate in a heavy lift mode and in a standard mode, wherein the work vehicle comprises a hydraulic lifting apparatus. The work vehicle is configured to automatically determine a mode of operation of the work vehicle by determining lifting criteria, wherein the lifting criteria comprises a load value of a load on the lifting apparatus based on a hydraulic pressure. The work vehicle is further configured to automatically determine a mode of operation of the work vehicle by automatically selecting the mode of operation based on the load value. In the event that the load value is above a threshold load, the mode of operation is a heavy lift mode comprising a heavy lift mode relief pressure on a relief valve and a heavy lift mode vehicle speed. In the event that the load value is below the threshold load, the mode of operation is a standard mode comprising a standard mode relief pressure and a standard mode vehicle speed. The heavy lift mode relief pressure is higher than the standard mode relief pressure, and the heavy lift mode vehicle speed is lower than the standard mode vehicle speed.
In this way, the work vehicle automatically engages the most suitable mode of operation based on the current use of the work vehicle. The work vehicle uses the heavy lift mode if it detects that a heavy load is being lifted, so that the vehicle speed is limited (allowing more stable lifting) and the relief pressure is set to a higher value (to allow more effective lifting). If a heavy load is not detected, the vehicle speed is not limited so that the work vehicle can travel and perform other operations more efficiently. The choice of mode also allows power distribution to the ground propulsion and the lifting to be appropriate for the operations being carried out.
Brief description of the drawings
A specific embodiment of the disclosure will now be described, by way of example only, with reference to the accompanying drawings in which: Figure 1 shows a flowchart illustrating a method of automatically determining a mode of operation of a work vehicle in accordance with an embodiment of the present disclosure. -3 -
Figure 2 shows a flowchart illustrating a method of automatically determining a mode of operation of a work vehicle in accordance with an embodiment of the present disclosure.
Figure 3 shows a flowchart illustrating a method of automatically determining a mode of operation of a work vehicle in accordance with an embodiment of the present disclosure.
Figure 4 shows a schematic system diagram for a work vehicle in accordance with an embodiment of the present disclosure.
Figure 5 shows a schematic hydraulic system diagram for a work vehicle in accordance with an embodiment of the present disclosure.
Detailed description
According to an embodiment of this disclosure, there is a method of automatically determining a mode of operation of a work vehicle.
A heavy lift mode is suitable for use when the work vehicle is lifting a heavy load. The travel speed of the vehicle is limited to below a lift threshold vehicle speed. A system relief valve pressure setting is set to a heavy lift mode relief pressure. A hydraulic pump output torque may be set to a heavy lift mode torque value, or limited to below a threshold torque value.
A standard mode is suitable for use when the work vehicle is not lifting a heavy load, and is performing other operations such as travelling or digging. The travel speed of the vehicle is not limited to below the lift threshold vehicle speed. The system relief valve pressure setting is set to a standard mode relief pressure. A hydraulic pump output torque may be set to a standard mode torque value.
The heavy lift mode relief pressure is higher than the standard mode relief pressure. The heavy lift mode pump output torque value is lower than the standard mode pump output torque value. -4 -
With reference to Figure 1, the method of automatically determining a mode of operation of an work vehicle (referred to elsewhere as operating the work vehicle in "auto heavy lift") comprises determining a load value of the load an other words a value indicative of the magnitude of the load) on the lifting apparatus by determining a hydraulic pressure (step 110). Based on the load value (also referred to as the load), a mode of operation is automatically selected (step 120). In the event that the load value is above a threshold load, the mode of operation selected is the heavy lift mode (the heavy lift mode is then engaged at step 130). The heavy lift mode comprises a heavy lift relief mode pressure on a relief valve and a heavy lift mode vehicle speed. In the event that the load value is below the threshold load, the mode of operation selected is a standard mode (the standard mode is then engaged at step 140). The standard mode comprises a standard relief pressure and a standard mode vehicle speed. The heavy lift mode relief pressure is higher than the standard mode relief pressure, and the heavy lift mode vehicle speed is lower than the standard mode vehicle speed.
The method of automatically selecting the mode of operation may be carried out throughout the use of the work vehicle, such that the load value is determined during use of the work vehicle. In the event that the load value is above the threshold load, the mode of operation selected is the heavy lift mode. If the work vehicle was previously in the heavy lift mode then no change is made. If the work vehicle was previously in the standard mode, then the heavy lift mode is engaged. In the event that the load value is below the threshold load, the mode of operation selected is the standard mode. If the work vehicle was previously in the standard mode then no change is made. If the work vehicle was previously in the heavy lift mode, then the standard mode is engaged. In an embodiment, the load on the lifting apparatus may be determined at regular intervals. In another embodiment the load on the lifting apparatus may be determined continuously. In another embodiment, the step of determining the load value may be prompted by a sensor detecting a change in the load value. For example, a first iteration of the method may be carried out to determine the initial mode of operation, and the method may be repeated (returning to step 110 of determining the load value) only if a change in load value is detected.
In an embodiment, with reference to Figure 2, at step 210 the user may choose between the heavy lift mode being always on (220); the standard mode being always on (230); and automatically determining the mode of operation (240, "auto heavy lift"). In an embodiment the choice may be made via the joystick, for example either via a button or via a joystick -5 -lever stroke. In another embodiment, the choice may be made via a display menu (for example via a monitor in the work vehicle or via a smartphone). In another embodiment, the choice may be linked to an operator ID, such that a particular operator has a default option of either auto heavy lift (automatically determining the mode of operation); the heavy lift mode being always on; or the standard mode being always on.
In an embodiment, the work vehicle may comprise a two speed travel shift. The two speed travel shift may be set lower in the heavy lift mode, and higher in the standard mode.
If the heavy lift mode is engaged during travelling in the standard mode, it may be that vehicle speed remains in accordance with the standard mode, so to prevent unstable travel operation by a sudden vehicle speed change. (If two speed shift is applied, higher speed may be retained in spite of heavy lift mode.) With reference to Figure 3, a method according to an embodiment of the present disclosure is illustrated. At step 310, the user chooses to use "auto heavy lift" so that the mode of operation is automatically determined. At step 320, it is determined whether the work vehicle is under lifting criteria. The lifting criteria may comprise at least one of a detected boom head end pressure being higher than a threshold pressure, the stick lever being in neutral, a detected boom lever operation, and absence of a system error indicative of a malfunction in the hydraulic system. In the event that the lifting criteria are not met, the method repeats step 320. In the event that the lifting criteria are met, the method proceeds to step 330. At step 330, it is determined whether a pump pressure is higher than a threshold pump pressure. In the event that the pump pressure is not higher than the threshold pump pressure, the method returns to step 320. In the event that the pump pressure is higher than the threshold pressure, the method proceeds to step 340. At step 340, a heavy lift solenoid is turned on. When the heavy lift solenoid is on, the main system relief valve pressure setting is changed from the standard mode relief pressure value to the heavy lift mode relief pressure value. Once the heavy lift solenoid is on, the pump pressure is monitored so that the work vehicle can be used in the most suitable mode. At step 350, it is determined whether a pump pressure is higher than a threshold pump pressure. In the event that the pump pressure is not higher than the threshold pump pressure, the method repeats step 350. The vehicle speed comprises the standard mode vehicle speed, and the hydraulic pump output torque is set to a standard mode torque value, so that the work vehicle can travel or dig as if in standard mode. In the event that the pump pressure is -6 -higher than the threshold pressure, the method proceeds to step 360. At step 360, the work vehicle settings are changed from standard mode to heavy lift mode. The hydraulic pump output torque is limited to below a threshold torque value. The vehicle speed is limited to below a lift threshold vehicle speed. If a two speed shift is used, this is set to be lower. At step 370, it is determined whether all control levers are in neutral position. If the control levers are not in neutral position, the method returns to step 350. If the control levers are in neutral position, the work vehicle settings are changed from heavy lift mode to standard mode at step 380. The hydraulic pump output torque is no longer limited to below a threshold torque value. The vehicle speed is no longer limited to below a lift threshold vehicle speed. If a two speed shift is used, the operator may select whether to keep this lower, or change it to be higher. At step 390, the heavy lift solenoid is turned off.
Figure 4 shows a system diagram for a work vehicle in accordance with an embodiment of the present disclosure. The user may choose whether or not to use auto heavy lift via input apparatus 410. The input apparatus may comprise at least one of a monitor 411 and a joystick button 412. In the event that the user decides to use auto heavy lift, the lifting criteria that determine whether the work vehicle should be in heavy lift mode are detected by sensors 420. Sensors 420 may comprise at least one of a pump pressure sensor 421, a boom head end pressure sensor 422 and a joystick lever stroke 423. A machine engine control module (ECM) takes inputs from the input apparatus 410 and the sensors 420. The machine ECM controls the two speed travel shift via a vehicle speed change solenoid 441, a heavy lift solenoid 442 and a hydraulic pump 443. In the event that the user chooses to use auto heavy lift using input apparatus 410, and the sensors 420 detect that the work vehicle should be in heavy lift mode, the vehicle speed change solenoid 441 may be used to set a two-speed travel shift to low. The heavy lift solenoid 442 is used to set the system relief valve pressure to a heavy lift mode relief pressure value. The hydraulic pump 443 is used to set the hydraulic pump output torque to a heavy lift mode output torque value. The machine ECM also communicates with control module 440 for the engine 460, to set the engine target speed to a heavy lift mode engine speed.
Figure 5 shows a schematic hydraulic system diagram for the work vehicle. The machine ECM 430 receives the boom head end pressure 550 from the boom cylinder 510; the lever stroke information 560 from the joystick 540; and the pump pressure 580 from the main -7 -pump 530. The boom cylinder 510 is connected to the main pump 530 via the boom spool 520. The machine ECM 430 sets the pressure of the main system relief valve 570.
Use of the lower heavy lift mode vehicle speed allows for more stable lifting, and the higher heavy lift mode relief pressure value allows for more effective lifting operation. The work vehicle may comprise a power source that is used for several functions of the work vehicle. For example, the power source may provide lifting power to the lifting apparatus, and travelling power for the work vehicle. The heavy lift mode and the standard mode may control power distribution from the power source of the work vehicle. In an embodiment, the work vehicle may comprise an internal combustion engine that powers both the hydraulic lifting apparatus and the ground propulsion (travelling) of the vehicle. The heavy lift mode may be used to distribute power in a way that prioritises lifting, and the standard mode may be used to distribute power in a way that prioritises travelling. The lifting power may be greater in the heavy lift mode than in the standard mode, and the travelling power may be greater in the standard mode than in the heavy lift mode. In another embodiment, the work vehicle may be electrically powered. In an event that a system error is detected during heavy lift mode, then it may be that the heavy lift mode engine speed and the heavy lift mode pump output torque are retained until it is detected that control levers are in neutral in order to prevent unstable machine operation. -8 -
Claims (1)
- CLAIMS: 1 A method of automatically determining a mode of operation of a work vehicle comprising a hydraulic lifting apparatus, the method comprising: determining lifting criteria, wherein the lifting criteria comprises a load value of a load on the lifting apparatus based on a hydraulic pressure; and automatically selecting the mode of operation based on the lifting criteria, wherein: in an event that the load value is above a threshold load, the mode of operation is a heavy lift mode comprising a heavy lift mode relief pressure on a relief valve and a heavy lift mode vehicle speed; and in an event that the load value is below the threshold load, the mode of operation is a standard mode comprising a standard mode relief pressure and a standard mode vehicle speed; wherein the heavy lift mode relief pressure is higher than the standard mode relief pressure, and the heavy lift mode vehicle speed is lower than the standard mode vehicle speed 2 The method of claim 1, wherein the load value is detected continuously while the work vehicle is operated and wherein: in the event that the work vehicle is operating in the heavy lift mode and the load value falls below the threshold load, the mode of operation switches to the standard mode; and in the event that the work vehicle is operating in the standard mode and the load value increases above the threshold load, the mode of operation switches to the heavy lift mode.3. The method of claim 1, wherein the load value is detected at regular intervals while the work vehicle is operated and wherein: in the event that the work vehicle is operating in the heavy lift mode and the load value falls below the threshold load, the mode of operation switches to the standard mode; and in the event that the work vehicle is operating in the standard mode and the load value increases above the threshold load, the mode of operation switches to the heavy lift mode.4. The method of claim 1 wherein the heavy lift mode further comprises a heavy lift mode pump output torque and the standard mode further comprises a standard mode pump output torque, wherein the heavy lift mode output torque is lower than the standard mode pump output torque 5. The method of claim 1 wherein the lifting criteria further comprises at least one of: operation of a boom lever, wherein in the event that operation of the boom lever is detected the mode of operation is heavy lift mode; status of a stick lever, wherein in the event that the stick lever is in neutral the mode of operation is heavy lift mode; and a boom head end pressure, wherein in the event that the boom head end pressure is above a threshold boom head end pressure the mode of operation is heavy lift mode.6. The method of claim 1, further comprising a user choosing between: automatically determining the mode of operation; the heavy lift mode being always on; and the standard mode being always on.7. The method of claim 6 wherein the user chooses via a display menu.8. The method of claim 6, wherein the user chooses via a joystick. 25 9. The method of claim 1 further comprising the work vehicle determining whether to automatically determine the mode of operation based on a user ID.10. The method of claim 1 wherein the work vehicle comprises an internal combustion engine, the internal combustion engine providing ground propulsion power for the work vehicle and lifting power to the hydraulic lifting apparatus, and wherein: the ground propulsion power is greater in the standard mode than in the heavy lift mode; and the lifting power is greater in the heavy lift mode than in the standard mode.-10 - 11. A work vehicle configured to operate in a heavy lifting mode and in a standard mode, wherein the work vehicle comprises a hydraulic lifting apparatus and wherein the work vehicle is configured to automatically determine a mode of operation of the work vehicle by: determining lifting criteria, wherein the lifting criteria comprises a load value of a load on the lifting apparatus based on a hydraulic pressure; and automatically selecting the mode of operation based on the load value, wherein: in the event that the load value is above a threshold load, the mode of operation is a heavy lift mode comprising a heavy lift mode relief pressure on a relief valve and a heavy lift mode vehicle speed; and in the event that the load value is below the threshold load, the mode of operation is a standard mode comprising a standard mode relief pressure and a standard mode vehicle speed; wherein the heavy lift mode relief pressure is higher than the standard mode relief pressure, and the heavy lift mode vehicle speed is lower than the standard mode vehicle speed 12. The work vehicle of claim 11, wherein the load value is detected continuously while the work vehicle is operated and wherein: in the event that the work vehicle is operating in the heavy lift mode and the load value falls below the threshold load, the mode of operation switches to the standard mode; and in the event that the work vehicle is operating in the standard mode and the load value increases above the threshold load, the mode of operation switches to the heavy lift mode.13. The work vehicle of claim 11, wherein the load is detected at regular intervals while the work vehicle is operated and wherein: in the event that the work vehicle is operating in the heavy lift mode and the load value falls below the threshold load, the mode of operation switches to the standard mode; and in the event that the work vehicle is operating in the travelling mode and the load value increases above the threshold load, the mode of operation switches to the heavy lift mode.14. The work vehicle of claim 11 wherein the heavy lift mode further comprises a heavy lift mode pump output torque and the standard mode further comprises a standard mode pump output torque, wherein the heavy lift output torque is lower than the standard pump output torque.15. The work vehicle of claim 11 wherein the lifting criteria further comprises at least one of: operation of a boom lever, wherein in the event that operation of the boom lever is detected the mode of operation is heavy lift mode; status of a stick lever, wherein in the event that the stick lever is in neutral the mode of operation is heavy lift mode; and a boom head end pressure, wherein in the event that the boom head end pressure is above a threshold boom head end pressure the mode of operation is heavy lift mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2114583.4A GB2611757B (en) | 2021-10-12 | 2021-10-12 | Automatic determination of mode of operation of a work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2114583.4A GB2611757B (en) | 2021-10-12 | 2021-10-12 | Automatic determination of mode of operation of a work vehicle |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB202114583D0 GB202114583D0 (en) | 2021-11-24 |
| GB2611757A true GB2611757A (en) | 2023-04-19 |
| GB2611757B GB2611757B (en) | 2024-02-28 |
Family
ID=78594989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2114583.4A Active GB2611757B (en) | 2021-10-12 | 2021-10-12 | Automatic determination of mode of operation of a work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2611757B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010052831A1 (en) * | 2008-11-04 | 2010-05-14 | 株式会社小松製作所 | Working vehicle |
| EP2527626A1 (en) * | 2010-01-19 | 2012-11-28 | Iseki & Co., Ltd. | Engine control device for tractor |
| EP3229219A1 (en) * | 2016-04-04 | 2017-10-11 | The Raymond Corporation | Systems and methods for vehicle simulation |
| CN109264583B (en) * | 2018-12-11 | 2020-03-10 | 中联重科股份有限公司 | Crane operation duration monitoring system and monitoring method |
| EP3739536A1 (en) * | 2019-05-14 | 2020-11-18 | Cleveron AS | An automated outdoor terminal for storage and handover of online grocery orders and a method to operate the terminal |
-
2021
- 2021-10-12 GB GB2114583.4A patent/GB2611757B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010052831A1 (en) * | 2008-11-04 | 2010-05-14 | 株式会社小松製作所 | Working vehicle |
| EP2527626A1 (en) * | 2010-01-19 | 2012-11-28 | Iseki & Co., Ltd. | Engine control device for tractor |
| EP3229219A1 (en) * | 2016-04-04 | 2017-10-11 | The Raymond Corporation | Systems and methods for vehicle simulation |
| CN109264583B (en) * | 2018-12-11 | 2020-03-10 | 中联重科股份有限公司 | Crane operation duration monitoring system and monitoring method |
| EP3739536A1 (en) * | 2019-05-14 | 2020-11-18 | Cleveron AS | An automated outdoor terminal for storage and handover of online grocery orders and a method to operate the terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2611757B (en) | 2024-02-28 |
| GB202114583D0 (en) | 2021-11-24 |
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