CN114277879A - Excavator and engine available power self-calibration method and system - Google Patents
Excavator and engine available power self-calibration method and system Download PDFInfo
- Publication number
- CN114277879A CN114277879A CN202210054649.6A CN202210054649A CN114277879A CN 114277879 A CN114277879 A CN 114277879A CN 202210054649 A CN202210054649 A CN 202210054649A CN 114277879 A CN114277879 A CN 114277879A
- Authority
- CN
- China
- Prior art keywords
- engine
- excavator
- available power
- main pump
- calibration
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 23
- 238000012790 confirmation Methods 0.000 claims description 9
- 238000013500 data storage Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 26
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
The invention relates to an excavator, aiming at solving the problem that the main pump of the existing excavator is inaccurate in power setting; the method and the system for self-calibrating the available power of the excavator and the engine are provided, wherein the calibration method comprises the following steps: the controller controls the engine to operate at each throttle gear and performs pressure-holding control on the hydraulic system in the operation process of each throttle gear, and the current is controlled by gradually increasing the displacement of the main pump from a preset value to increase the displacement of the main pump until the engine is decelerated to the lowest rotation speed allowed by the gear; and calculating the available power of each gear of the calibrated engine according to the main pump pressure, the main pump rotating speed and the main pump displacement control current when the engine in each gear falls to the lowest allowable rotating speed. The method can calibrate and determine the available power of each gear of the excavator engine on site through the calibration step, and set the absorbed power of the main pump of the excavator by using the calibrated available power when power matching is carried out, so that the falling speed of the engine can be ensured to be within an allowable range, the power of the engine can be absorbed to the maximum extent, and better effect can be achieved.
Description
Technical Field
The invention relates to an excavator, in particular to an excavator and an engine available power self-calibration method and system.
Background
The excavator, as a king of engineering machinery, has various functions of digging, loading and unloading, leveling, scraping, crushing, hoisting, traction and the like, is widely applied, and has the figure of the excavator during operation in low-altitude plain areas, small plateau areas, plateau areas and the like. At present, a hydraulic excavator generally adopts a diesel engine as power, the diesel engine is under the same gear and different environments, and the available power output by the engine and absorbed by a main pump is different, for example, under the same gear, the available power of the engine is lower than that of a low-altitude area in a high-altitude area, the available power of the engine is higher than that of a low-content area in an area with high oxygen content, and even the available power of the engine is influenced by the ambient temperature.
When the existing excavator works, the power of the engine needs to be matched, so that the setting of the absorption power of the main pump is not more than a preset value, and the phenomenon that the engine is too fast and even stalls due to the fact that the setting of the absorption power of the hydraulic pump is too large is avoided. The matching of existing excavators to engine power is typically based on the available power of the engine in a conventional environment (e.g., ambient temperature environment at an altitude typically below 3000 meters). For situations where the engine is experiencing a decrease in available power due to environmental changes, measures are also typically taken only for altitude-induced power changes. For the effect of altitude on the engine, it is common to experimentally calibrate the available power of the excavator at several representative altitudes. And selecting corresponding calibrated available power data according to the altitude of the environment when the excavator works.
The available power of the engine under the environment of a few altitudes is calibrated to be used for matching the complete machine power of the excavator, so that the following problems exist: the calibrated power data is limited, and the excavator can work in environments with various altitudes, so that the calibrated data selected according to the altitude is different from the real environment, and in addition, even if the altitude is the same as the altitude of the calibrated data, the real available power of the engine is different from the calibrated available power due to different factors of the working environment, such as oxygen content in air and environment temperature. The existing solutions for calibrating the engine power according to altitude and matching the overall power are therefore generally not optimal power matching solutions.
Disclosure of Invention
The invention aims to solve the technical problem that the power matching of the existing excavator is inaccurate, and provides an excavator and an engine available power self-calibration method and system, which are used for calibrating the available power output by an excavator engine so as to ensure that the engine stall speed can be maximally absorbed in an allowable range during power matching of the excavator, thereby achieving better effect.
The technical scheme for realizing the purpose of the invention is as follows: the available power self-calibration method for the excavator engine is characterized by comprising the following calibration steps:
the controller controls the engine to operate at each throttle gear and controls the following control in the operation process of each throttle gear: carrying out pressure building control on an excavator hydraulic system, and gradually increasing the main pump displacement control current from a preset value to increase the main pump displacement until the engine stall speed reaches the lowest allowable rotation speed of the gear; and calculating the useful power of each gear of the calibrated engine according to the main pump pressure, the main pump rotating speed and the main pump displacement control current when the engine in each gear falls to the lowest allowable rotating speed.
In the invention, the available power of the engine of the excavator can be calibrated and determined on site through the calibration step, and the excavator adopts the calibrated available power to set the absorbed power of the main pump of the excavator when power matching is carried out, so that the falling speed of the engine can be ensured to absorb the power of the engine to the maximum extent within an allowable range, and a better effect is achieved.
In the self-calibration method for the available power of the excavator engine, the pressure build-up control is to close an oil way for controlling oil return of a main valve in a hydraulic system. And closing an oil return oil circuit of the control main valve to suppress pressure, wherein the control main valve is positioned at a neutral position, and pressure oil output by the main pump cannot enter the hydraulic executing part, so that the pressure suppressing action is no-action pressure suppressing, and the pressure suppressing operation safety is ensured.
The self-calibration method for the available power of the engine of the excavator further comprises an environment comparison step, wherein the environment comparison step is to acquire the altitude or the ambient atmospheric pressure of the position where the excavator is located, and when the altitude or the ambient atmospheric pressure corresponding to the available power of the engine matched with the current power of the engine of the excavator does not correspond to the measured value, the controller sends an engine available power calibration request information instruction to the instrument and executes the calibration step after obtaining an engine available power calibration confirmation instruction from the instrument. The output power of the engine is mainly influenced by the air pressure, the air pressure generally corresponds to the altitude, and the higher the poster is, the lower the air pressure generally is, so the altitude can be used for representing the air pressure. The method comprises the steps that after the excavator is started, a group of default power parameters are selected for power matching, if the air pressure corresponding to the default power parameters does not correspond to the currently detected air pressure value or altitude, power calibration is carried out, and if the air pressure corresponding to the default power parameters does not correspond to the currently detected air pressure value or altitude, the power calibration is not carried out.
In the self-calibration method for the available power of the excavator engine, the controller obtains an engine available power calibration confirmation instruction from the instrument and then detects the state of the pilot stop valve in the hydraulic system, and executes the calibration step when the pilot stop valve is in a closed state, otherwise, the controller sends information prompting the closing of the pilot stop valve to the instrument.
The self-calibration method for the available power of the engine of the excavator further comprises a data storage step, wherein the data storage step is to store the calibrated available power of each gear of the engine, the acquired altitude or the ambient atmospheric pressure data in a storage device which can be read by a controller. And storing the calibrated power parameter and the air pressure or altitude parameter for use when power matching is carried out after the engine is started, so that repeated calibration under the same environment is avoided.
The technical scheme for realizing the purpose of the invention is as follows: the system is characterized by further comprising a controller, wherein the controller comprises a processor and a memory, and the memory stores control instructions for the processor to execute the calibration steps in the excavator engine available power self-calibration method.
In the power self-calibration system for the excavator engine, the hydraulic system comprises an oil return stop solenoid valve which is electrically connected with the controller and used for closing and opening oil return of the main valve. By closing the oil return stop electromagnetic valve, the main valve is controlled to be in the middle position in the pressure building process, and the non-action pressure building of the hydraulic actuator can be realized.
The self-calibration system for the available power of the excavator engine further comprises a sensor connected with the controller and used for acquiring the altitude of the position where the excavator is located or the ambient atmospheric pressure, and an instrument connected with the controller and used for inputting an available power calibration confirmation instruction of the engine, wherein when the altitude corresponding to the current main pump setting power of the excavator or the ambient atmospheric pressure does not correspond to the measured value, the controller sends an available power calibration request information instruction of the engine to the instrument and executes a calibration step after the available power calibration confirmation instruction of the engine is acquired from the instrument.
The technical scheme for realizing the purpose of the invention is as follows: the excavator is characterized by comprising the excavator engine available power self-calibration system.
Compared with the prior art, the method can calibrate and determine the available power of the engine of the excavator on site through the calibration step, and the excavator sets the absorbed power of the main pump of the excavator by using the calibrated available power when performing power matching, so that the falling speed of the engine can be ensured to absorb the power of the engine to the maximum extent within the allowable range, and better effects are achieved.
Drawings
FIG. 1 is a flow chart of the excavator engine available power calibration of the present invention.
FIG. 2 is a block diagram of the self-calibration system for the power available from the engine of the excavator.
Part names and serial numbers in the figure:
the control system comprises a controller 10, an engine 20, an engine control unit 21, a main pump 31, a displacement adjusting and adjusting electromagnetic valve 32, a main pump pressure sensor 33, an altitude sensor 40, a pilot stop valve 50 and a return oil stop electromagnetic valve 60.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
The self-calibration system for the power available for the engine of the excavator in the embodiment is shown in fig. 2, and comprises a controller 10, an engine 20, a hydraulic system, an altitude sensor 40 and a meter 70.
The controller 10 includes a processor and a memory in which is stored the relevant control instructions for the processor to perform the relevant control operations.
An Engine Control Unit (ECU)21 is connected to the controller 10, the controller 10 sends an accelerator shift control command to the ECU to control the accelerator shift of the engine 20, and the controller 10 simultaneously acquires engine rotation speed information from the ECU 21.
The hydraulic system comprises a main pump 31 and a control main valve. The main pump 31 is directly driven by the engine 20, is connected to the engine through a propeller shaft, and has the same or a fixed speed ratio as the engine 20. The main pump 21 is a variable displacement pump with variable displacement, a displacement regulating electromagnetic valve 32 for controlling the displacement is connected with the controller 10, and the controller 10 controls the displacement of the main pump by controlling the magnitude of the main pump displacement control current. And a main pump pressure sensor connected with the controller is arranged on a pump port oil way of the main pump and used for measuring the pressure of the main pump.
The control main valve is connected with the main pump, an oil return cut-off electromagnetic valve 60 is arranged on an oil return oil path of the control main valve, when the oil return cut-off electromagnetic valve 60 is closed, oil output by the main pump cannot flow back to an oil tank through the control main valve, when the middle position of the control main valve or the position of the control main valve is changed, a hydraulic actuating part controlled by the control main valve does not act, and the safety of pressure-building operation is ensured. When the pressure is suppressed, high-pressure oil output by the main pump overflows through a front valve overflow valve of a control main valve and flows back to the hydraulic oil tank.
The oil return stop solenoid valve 60 includes an oil return stop valve and a pilot control solenoid valve connected to a pilot control end of the oil return stop valve, and the pilot control solenoid valve is connected to the controller and is controlled to open and close by the controller.
An altitude sensor 40 is connected to the controller for measuring the altitude of the location where the excavator is located. The altitude sensor may also be replaced with a barometer for measuring atmospheric pressure.
A pressure sensor connected with a controller is arranged behind the valve of the pilot stop valve 50 in the hydraulic system and used for detecting the pressure of the pilot oil behind the valve of the pilot stop valve so as to judge the state of the pilot stop valve. The state of the pilot cut valve may be detected by an electronic device such as a proximity switch connected to the control.
The meter 70 is connected to the controller for human-computer interaction, displaying relevant information from the controller and inputting relevant instructions.
The process of calibrating the available power of the engine by the self-calibration system for the available power of the engine in the embodiment is shown in FIG. 1, and comprises the following steps:
after the engine of the excavator is started, the controller reads the recorded main pump setting power parameter and the recorded altitude value from the memory according to a program, and then an environment comparison step is carried out.
And if the absolute value of the difference between the A and the B is smaller than a preset value, namely the altitude of the current position of the excavator is consistent with the altitude value corresponding to the main pump set power parameter selected by matching the excavator power, ending the available power calibration program of the engine, and enabling the excavator to work according to the currently matched power setting.
And if the absolute value of the difference between the A and the B is larger than a preset value, namely the current power of the engine of the excavator is matched with the altitude measured value corresponding to the selected main pump set power parameter and does not correspond to the altitude measured value, the controller sends an engine available power calibration request information instruction to the instrument, and the operator confirms on the instrument. And if the operator does not confirm within the preset time, detecting the altitude again and comparing. And if the operator selects not to calibrate the available power of the engine through the instrument, ending the available power calibration program of the engine, and operating the excavator according to the currently matched power setting. If the operator selects the available power of the calibration engine through the instrument, the subsequent steps are carried out.
After the controller obtains an engine available power calibration confirmation instruction from the instrument, the state of the pilot stop valve is detected through the pilot pressure sensor or the proximity switch, and if the pilot stop valve is in an open state, information for reminding an operator to close the pilot stop valve is displayed on the instrument; and if the pilot stop valve is in a closed state, performing a calibration step.
In the calibration step, the controller firstly closes the oil return stop electromagnetic valve to carry out pressure building, oil output by the main pump cannot return to the oil tank through the main control valve in the pressure building process, and the oil needs to overflow through a front valve overflow valve of the main control valve to return to the oil tank. The controller outputs a main pump displacement control current with a preset value, for example, the main pump displacement control current is zero, so that the displacement of the main pump is minimum, the accelerator of the engine is controlled at the same time, the engine is in the highest accelerator gear, and then the main pump displacement control current is increased according to a certain step length, so that the displacement of the main pump is gradually increased. As the displacement of the main pump increases, the power absorbed by the main pump gradually increases. When the main pump absorbed power increases to a certain extent, the engine speed starts to drop. When the engine is decelerated to the gear allowable value, the engine speed (namely the main pump speed), the main pump pressure and the main pump displacement control circuit at the time are recorded, so that the main pump absorbed power at the time is calculated, and the main pump absorbed power at the time is calibrated to be the available power of the engine at the gear.
After the available power of the highest accelerator gear of the engine is calibrated, the controller controls the accelerator of the engine to reduce the gear to a second high gear, and the available power calibration operation is carried out when the engine operates in the second high gear and the highest gear is repeated until the available power calibration of all the accelerator gears of the engine is finished.
And performing data storage after the available power of all throttle gears of the engine is calibrated, wherein the data storage step is to store the available power calibrated by the throttle gears of the engine and the detected altitude value B as a group of parameters in a memory of the controller. When the engine is started next time, the controller can select proper available power in the memory according to the detected altitude value when performing power matching, and the main pump setting power is determined according to the selected available power to perform power matching, so that repeated calibration steps at operation sites with the same altitude are avoided.
In the invention, the available power of the engine calibrated in the calibration step is the maximum power absorbable by the main pump of the hydraulic system, and when the power is matched, the absorption power of the main pump can be set according to the available power of each gear of the engine, so that the problem that the engine can not work normally due to serious deceleration caused by overlarge absorption power of the main pump is avoided.
In the invention, the available power calibration of the engine is based on the real working environment, so that the acquired power parameter is real, and the power matching is carried out based on the power parameter, thereby ensuring the normal work of the engine and maximally utilizing the output power of the engine.
Claims (9)
1. The self-calibration method for the available power of the engine of the excavator is characterized by comprising the following calibration steps:
the controller controls the engine to operate at each throttle gear and controls the following control in the operation process of each throttle gear: carrying out pressure building control on an excavator hydraulic system, and gradually increasing the main pump displacement control current from a preset value to increase the main pump displacement until the engine stall speed reaches the lowest allowable rotation speed of the gear; and calculating the available power of each gear of the calibrated engine according to the main pump pressure, the main pump rotating speed and the main pump displacement control current when the engine in each gear falls to the lowest allowable rotating speed.
2. The self-calibration method for the available power of the excavator engine according to claim 1, wherein the pressure-holding control is to close an oil circuit for controlling oil return of a main valve in a hydraulic system.
3. The self-calibration method for the available power of the engine of the excavator as claimed in claim 1 or 2, characterized by further comprising an environment comparison step of obtaining the altitude or the ambient atmospheric pressure of the position where the excavator is located, when the altitude or the ambient atmospheric pressure corresponding to the current main pump set power of the excavator does not correspond to the measured value, the controller sends an engine available power calibration request information instruction to the meter and executes the calibration step after obtaining an engine available power calibration confirmation instruction from the meter.
4. The excavator engine available power self-calibration method according to claim 3, wherein the controller detects the state of the pilot cut valve in the hydraulic system after obtaining the engine available power calibration confirmation instruction from the meter, performs the calibration step when the pilot cut valve is in a closed state, and otherwise sends a message prompting to close the pilot cut valve to the meter.
5. The excavator engine available power self-calibration method as claimed in claim 3, further comprising a data storage step of storing calibrated available power of each gear of the engine, acquired altitude or ambient atmospheric pressure data in a memory device where the controller can read the data.
6. The self-calibration system for the available power of the engine of the excavator comprises the engine, a hydraulic system for driving and connecting a main pump with the engine, and a main pump pressure sensor for measuring the pressure of the main pump, and is characterized by further comprising a controller, wherein the controller comprises a processor and a memory, and control instructions for the processor to execute the calibration steps in the self-calibration method for the available power of the engine of the excavator in claim 1 are stored in the memory.
7. The self-calibration system for the available power of the excavator engine according to claim 6, wherein the hydraulic system comprises an oil return stop solenoid valve which is electrically connected with the controller and used for closing and opening oil return of the main control valve, and the controller controls the oil return stop solenoid valve to be closed when pressure build-up control is performed.
8. The excavator engine available power self-calibration system as claimed in claim 6, further comprising a sensor connected with the controller for acquiring an altitude of a location where the excavator is located or an ambient atmospheric pressure, and a meter connected with the controller for inputting an engine available power calibration confirmation command, wherein when the altitude or the ambient atmospheric pressure corresponding to the current main pump set power of the excavator does not correspond to the measured value, the controller sends an engine available power calibration request information command to the meter and executes a calibration step after obtaining the engine available power calibration confirmation command from the meter.
9. An excavator characterized by having the excavator engine available power self-calibration system of any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054649.6A CN114277879A (en) | 2022-01-18 | 2022-01-18 | Excavator and engine available power self-calibration method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054649.6A CN114277879A (en) | 2022-01-18 | 2022-01-18 | Excavator and engine available power self-calibration method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114277879A true CN114277879A (en) | 2022-04-05 |
Family
ID=80881080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210054649.6A Pending CN114277879A (en) | 2022-01-18 | 2022-01-18 | Excavator and engine available power self-calibration method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114277879A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030245A (en) * | 2022-05-23 | 2022-09-09 | 中联重科土方机械有限公司 | Positive flow excavator and control method, control device and controller thereof |
| CN115369937A (en) * | 2022-08-26 | 2022-11-22 | 中联重科土方机械有限公司 | Positive flow excavator and control method, control device and controller thereof |
| CN115613649A (en) * | 2022-08-29 | 2023-01-17 | 徐州徐工挖掘机械有限公司 | Excavator gear power modification system and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022202A (en) * | 2010-12-03 | 2011-04-20 | 三一重机有限公司 | Power matching control method for excavator at high altitude |
| CN102021925A (en) * | 2009-09-21 | 2011-04-20 | 北汽福田汽车股份有限公司 | Control system and method for matching excavator power |
| CN202519735U (en) * | 2012-05-04 | 2012-11-07 | 熔盛机械有限公司 | Plateau self-adaptation control device for excavator |
| CN105302932A (en) * | 2014-07-25 | 2016-02-03 | 中国人民解放军军事交通学院 | Simulation based high-altitude calibration method for high-pressure common rail diesel engine |
| CN105946846A (en) * | 2016-04-25 | 2016-09-21 | 北汽福田汽车股份有限公司 | Pump truck power matching control method and system |
| US20160356021A1 (en) * | 2014-02-24 | 2016-12-08 | Sumitomo(S.H.I.) Construction Machinery Co., Ltd. | Shovel and method of controlling shovel |
| CN108867748A (en) * | 2018-06-29 | 2018-11-23 | 徐州徐工挖掘机械有限公司 | A kind of throttle calibration control method suitable for excavator |
| CN111038484A (en) * | 2019-11-19 | 2020-04-21 | 潍柴动力股份有限公司 | Power output control method and system for hybrid power vehicle and motor vehicle |
| CN111335397A (en) * | 2020-03-13 | 2020-06-26 | 三一重机有限公司 | Excavator overflow control method and device, excavator and readable storage medium |
-
2022
- 2022-01-18 CN CN202210054649.6A patent/CN114277879A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021925A (en) * | 2009-09-21 | 2011-04-20 | 北汽福田汽车股份有限公司 | Control system and method for matching excavator power |
| CN102022202A (en) * | 2010-12-03 | 2011-04-20 | 三一重机有限公司 | Power matching control method for excavator at high altitude |
| CN202519735U (en) * | 2012-05-04 | 2012-11-07 | 熔盛机械有限公司 | Plateau self-adaptation control device for excavator |
| US20160356021A1 (en) * | 2014-02-24 | 2016-12-08 | Sumitomo(S.H.I.) Construction Machinery Co., Ltd. | Shovel and method of controlling shovel |
| CN105302932A (en) * | 2014-07-25 | 2016-02-03 | 中国人民解放军军事交通学院 | Simulation based high-altitude calibration method for high-pressure common rail diesel engine |
| CN105946846A (en) * | 2016-04-25 | 2016-09-21 | 北汽福田汽车股份有限公司 | Pump truck power matching control method and system |
| CN108867748A (en) * | 2018-06-29 | 2018-11-23 | 徐州徐工挖掘机械有限公司 | A kind of throttle calibration control method suitable for excavator |
| CN111038484A (en) * | 2019-11-19 | 2020-04-21 | 潍柴动力股份有限公司 | Power output control method and system for hybrid power vehicle and motor vehicle |
| CN111335397A (en) * | 2020-03-13 | 2020-06-26 | 三一重机有限公司 | Excavator overflow control method and device, excavator and readable storage medium |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030245A (en) * | 2022-05-23 | 2022-09-09 | 中联重科土方机械有限公司 | Positive flow excavator and control method, control device and controller thereof |
| CN115030245B (en) * | 2022-05-23 | 2024-02-06 | 中联重科土方机械有限公司 | Positive flow excavator, control method, control device and controller thereof |
| CN115369937A (en) * | 2022-08-26 | 2022-11-22 | 中联重科土方机械有限公司 | Positive flow excavator and control method, control device and controller thereof |
| CN115369937B (en) * | 2022-08-26 | 2024-04-12 | 中联重科土方机械有限公司 | Positive flow excavator, control method, control device and controller thereof |
| CN115613649A (en) * | 2022-08-29 | 2023-01-17 | 徐州徐工挖掘机械有限公司 | Excavator gear power modification system and method |
| CN115613649B (en) * | 2022-08-29 | 2024-04-30 | 徐州徐工挖掘机械有限公司 | Gear power modification system and method for excavator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114277879A (en) | Excavator and engine available power self-calibration method and system | |
| CN109564427B (en) | Operation guiding device | |
| US8321114B2 (en) | Work vehicle and work vehicle control method | |
| AU2006317096B2 (en) | Pump torque controller of hydraulic working machine | |
| US5457633A (en) | Apparatus for limiting horsepower output of an engine and method of operating same | |
| US8095280B2 (en) | Method for adjusting engine speed based on power usage of machine | |
| CN102733441B (en) | Raising speed control energy saving system and method for excavator | |
| JP4746750B2 (en) | Method and apparatus for controlling dead zone of fluid system | |
| US9127439B2 (en) | Engine control device | |
| KR101625682B1 (en) | Fuel consumption rate display apparatus, fuel consumption rate display method and standard fuel rate calculation method for construction machinery | |
| US7894963B2 (en) | System and method for controlling a machine | |
| CN102996265B (en) | Engineering mechanical equipment and engine rotating speed control method, device and system thereof | |
| EP2980326B1 (en) | Device and method for controlling hydraulic pump in construction machine | |
| CN112482485A (en) | Actuator trajectory control method, actuator trajectory control device, actuator trajectory control controller and storage medium | |
| CN104033264B (en) | Engineering machinery | |
| CN107002574B (en) | Method for operating a diesel engine | |
| CN102042098A (en) | Method and system for controlling engine gears of excavator | |
| KR102192740B1 (en) | Integrated control apparatus and method for enging and hydraulic pump in construction machine | |
| EP2179902A2 (en) | System for bleeding a valve in a vehicle hydraulic system | |
| US5967758A (en) | Controlling device for controlling rotational speed of engine of hydraulic working machine | |
| CN107002575B (en) | Method for operating an internal combustion engine | |
| US6651544B2 (en) | Controlling the deadband of a fluid system | |
| US6535807B2 (en) | Control system for use on construction equipment | |
| JPH09273183A (en) | Revolution number controller of engine for hydraulic construction machine | |
| US20230078399A1 (en) | Valve calibration system and calibration method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220405 |
|
| WD01 | Invention patent application deemed withdrawn after publication |