CN114658581B - Automatic start-stop control method and system for excavator engine - Google Patents
Automatic start-stop control method and system for excavator engine Download PDFInfo
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- CN114658581B CN114658581B CN202210211614.9A CN202210211614A CN114658581B CN 114658581 B CN114658581 B CN 114658581B CN 202210211614 A CN202210211614 A CN 202210211614A CN 114658581 B CN114658581 B CN 114658581B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007405 data analysis Methods 0.000 claims abstract description 32
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- 230000000930 thermomechanical effect Effects 0.000 claims 4
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 101100388636 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ECM21 gene Proteins 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
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- 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
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
- F02N11/0811—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop using a timer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention relates to engine control, which aims at solving the problem that the prior excavator cluster cannot select proper time to stop so as to save energy when idling; the automatic start-stop control method and system for the excavator engine are provided, wherein the control method comprises the following steps: collecting operation data and uploading the operation data to a big data analysis platform, analyzing and determining target excavators working in the same area under the same working condition, and sending the idle speed duty ratio of a computer group to each target excavators; displaying shutdown information of whether an engine is flameout or not on an instrument by the target excavator according to the state and the cluster idle speed ratio; controlling the engine to stop or run according to the instrument selection instruction; after flameout, detecting a pilot operation signal to automatically start the engine; the invention gives out the suggestion of whether to stop according to the integral busy degree of the cluster operation, thereby realizing further energy conservation.
Description
Technical Field
The invention relates to engine control, in particular to an automatic start-stop control method and system for an excavator engine.
Background
In a large-scale construction site, there is a common excavator group work, that is, the same work site uses the same machine type to perform the same operation, for example, in a large-scale excavation site, a plurality of excavators are used to perform the excavation and loading operations. When the excavator driver operates the excavator to carry out loading operation, each time the excavator driver is fully loaded with one truck, the loading operation can be continued after the other truck is stopped to a loading area, the waiting time is dependent on the whole coordination capacity of the construction site, if the waiting time is too long, the idling time of the whole excavator is too long, the carbon deposition is easy to generate to lose the engine, a large amount of energy sources can be wasted, the emission amount of unnecessary harmful gases is increased, and unnecessary environmental pollution is caused.
The existing excavator can save energy by entering an idle state, but a great degree of waste still exists in long-time idle, and especially when a cluster works, a single operator cannot select proper time to stop the machine, so that the energy is further saved. If the excavator is automatically stopped after the fixed waiting time is set, the condition that the fixed waiting time is inconsistent with the actual condition can possibly appear, so that the excavator engine is frequently started and stopped, and the energy-saving actual effect is preferential and even the engine is damaged.
Disclosure of Invention
The invention aims to solve the technical problem that the proper time for stopping can not be selected to save energy when the conventional excavator group is in idle operation waiting, and provides an automatic start-stop control method and system for an excavator engine, so that when the excavator is in idle operation waiting for the operation of the excavator group, an engine stop suggestion is given by combining the idle operation condition of the excavator group, and further energy conservation is realized.
The technical scheme for achieving the purpose of the invention is as follows: the automatic start-stop control method for the excavator engine is characterized by comprising the following steps:
S1: collecting operation data of the excavators in real time and uploading the operation data to a big data analysis platform, analyzing and determining target excavators working under the same working condition in the same area by the big data analysis platform, calculating the cluster idle speed ratio of the excavators working under the working condition in the area within a preset time period, and sending the cluster idle speed ratio to each target excavators;
S2: the overall machine controller of each target excavator judges whether the overall machine controller meets the automatic stop condition of the engine stop operation according to the excavator operation data; displaying shutdown information of whether an engine is flameout or not on an instrument of a target excavator when the target excavator meets an automatic shutdown condition and the cluster idling ratio is larger than a preset value; controlling the engine to automatically flameout or keep running correspondingly according to the selection instruction on the instrument;
S3: after the target excavator engine is flameout, the complete machine controller monitors a complete machine pilot operation signal, and when the complete machine pilot operation signal is detected, the engine is automatically started;
And the cluster idle speed ratio is the ratio of the total idle speed time length to the total starting time length of the excavator cluster for working under the working condition in the area within the preset time length, and the total idle speed time length and the total starting time length comprise the automatic flameout time length of the engine in the step S2.
According to the invention, each excavator transmits the self-running data to the big data analysis platform, the big data analysis platform analyzes the idle speed duty ratio of the cluster, and the idle speed duty ratio is used as a reference of the integral busy degree of the cluster operation, and according to the reference, a suggestion of whether the excavator is stopped or not is given when the engine of the excavator enters an idle state, so that further energy conservation is realized.
In the above control method, the step S2 of judging whether the automatic stop condition of the engine stop operation is satisfied includes a step of judging whether the excavator is in a heat engine state and a step of judging whether the exhaust gas aftertreatment device is in a regeneration state; and when the engine is in idle operation and the whole engine is in a non-heat engine state and the tail gas post-processor is in a non-regeneration state, judging that the excavator meets the automatic stop condition.
In the control method, the judging step of judging whether the excavator is in the heat engine state is to acquire the hydraulic oil temperature and the engine cooling liquid temperature, and judge that the excavator is in the heat engine state when the engine is in idle operation and the hydraulic oil temperature and the engine cooling liquid temperature are in continuous rising.
In the control method, in step S2, when the target excavator meets an automatic stop condition, a pilot locking state is detected, and when the pilot locking is in the locking state, stop information of whether the engine is flameout is displayed on an instrument of the target excavator, and the engine is correspondingly controlled to be flameout or kept running according to a selection instruction on the instrument; when the pilot locking is in an unlocking state and the cluster idling ratio is larger than a preset value, displaying shutdown information of whether the engine is flameout or not on an instrument of the target excavator, and correspondingly controlling the engine to be flameout or keep running according to a selection instruction on the instrument.
In the control method, different weight coefficients are set for different models, and the total idle speed time is calculated according to the sum of the actual idle speed time of each excavator and the automatic flameout time of the engine and the corresponding weight coefficient. Further, the actual idle time of each excavator does not include the idle time when the excavator is in a heat engine state.
In the control method, the excavator operation data collected and uploaded to the big data analysis platform comprises model information, engine operation data used for determining the operation state of the excavator, positioning information used for determining the position of the excavator and working condition operation information used for determining the working condition of the excavator. Further, the working condition operation information comprises excavator hydraulic executive component pressure information; or in combination with one or more of engine load factor, engine speed, engine torque, main pump pressure, throttle gear, and operating mode information.
In the above control method, in step S2, the complete machine controller sends a flameout control command to the engine when no command to cancel the automatic flameout of the engine is input within a predetermined time after the shutdown information indicating whether the engine is flameout or not is displayed on the meter.
The technical scheme for achieving the purpose of the invention is as follows: the automatic start-stop control system for the excavator engine is characterized by comprising a big data analysis platform, wherein the excavator comprises a data acquisition device for acquiring the operation data of the excavator in real time and uploading the operation data to the big data analysis platform;
The big data analysis platform analyzes and determines target excavators working under the same working condition in the same area according to the received operation data, calculates the cluster idle speed ratio of the excavators working under the working condition in the area within a preset time period and sends the cluster idle speed ratio to each target excavators;
the overall machine controller of the target excavator judges whether the overall machine controller meets the automatic stop condition of the engine stop operation according to the excavator operation data; displaying shutdown information of whether an engine is flameout or not on an instrument of a target excavator when the target excavator meets an automatic shutdown condition and the cluster idling ratio is larger than a preset value; the whole machine controller of the target excavator correspondingly controls the engine to automatically flameout or keep running according to the selection instruction on the instrument, and if the whole machine controller monitors the whole machine pilot operation signal after the automatic flameout and automatically starts the engine when the whole machine pilot operation signal is detected.
Compared with the prior art, the invention calculates the idle speed duty ratio of the computer cluster as the reference of the busyness degree of the whole cluster operation, and accordingly gives out advice of whether to stop when the excavator engine enters the idle state, thereby realizing further energy conservation.
Drawings
FIG. 1 is a control block diagram of an automatic start-stop control system for an excavator engine according to the present invention.
FIG. 2 is a control flow diagram of the method for automatic start-stop control of an excavator engine of the present invention.
Detailed Description
The following describes specific embodiments with reference to the drawings.
Fig. 1 shows a control block diagram of an automatic start-stop control system for an excavator engine, which is used for automatic start-stop control when an excavator is at idle speed after being started in a work cluster with the same working condition in the same area. The control system comprises a big data analysis platform 10, and the excavator comprises a data acquisition device for acquiring the operation data of the excavator in real time and uploading the operation data to the big data analysis platform.
As shown in fig. 1, the complete machine controller obtains the pressure of the main pump and the hydraulic actuator through a 20 pressure sensor 28, the temperature of the hydraulic oil through a hydraulic oil temperature sensor 27, the pressure difference of the post-processor through a post-processor pressure difference sensor 26, and the state of the pilot lock 25.
The complete machine controller 20 also acquires engine operation data through the engine ECM21, the engine ECM21 acquires the temperature of the coolant through the coolant temperature sensor 24, and the rotational speed of the transmitter through the rotational speed sensor 23.
The whole machine controller of each excavator uploads the collected operation data to the big data analysis platform 10 through the T-BOX22, and the big data analysis platform transmits the analysis result back to each target excavator.
The overall machine controller of the target excavator judges whether the overall machine controller meets the automatic stop condition of the engine stop operation according to the excavator operation data; and controlling the engine to automatically stop or keep running according to whether the target excavator meets the automatic stop condition and the cluster idling occupation and the pilot locking state. The automatic start-stop control method of the excavator engine comprises the following specific steps:
As shown in fig. 2, step S1 includes a substep S11 of collecting excavator operation data and uploading to a big data analysis platform and determining a target excavator and a substep S12 of computer group idle speed ratio.
In step S11, a complete machine controller of the excavator group which is started up acquires operation data of the complete machine through each sensor and uploads the operation data to a big data analysis platform, the big data analysis platform analyzes and determines the excavators which work in the same area under the same working condition according to the operation data uploaded by each excavator, and the excavators which work in the same area under the same working condition are classified as one type of target excavator.
The operation data uploaded to the big data platform by the excavator comprises machine type information, engine operation data used for determining the operation state of the excavator, positioning information used for determining the position of the excavator and working condition operation information used for determining the working condition of the excavator.
The model information is used to determine the size of the excavator work capacity. In the same type of target excavator, the same type of excavator is common, that is, the working capacities of the excavators are the same. Different signal excavators may also be present in the same class of target excavators.
The engine operation data is used for determining whether the excavator is in an idle operation state in a non-heat engine state, and mainly comprises engine rotation speed data, engine cooling liquid temperature data and hydraulic oil temperature data. The engine coolant temperature data and the hydraulic oil temperature data are mainly used for determining whether the excavator is in a heat engine state.
The heat engine is a process of raising the engine temperature, the hydraulic oil temperature, to a predetermined temperature after the engine is started, in which the engine is usually in an idle operation state, but the engine cold night temperature and the hydraulic oil temperature are continuously raised. When the engine is in idle operation and the hydraulic oil temperature and the engine coolant temperature are continuously increased, the excavator can be judged to be in a heat engine state.
The positioning information is used to determine whether the excavator is in the same area, such as the same work site. The positioning information is usually GPS information or Beidou positioning information, or information that the excavator can be determined to be in a preset place through other positioning approaches.
The working condition operation information is used for determining the working condition of the excavator, namely, determining that the target excavator is dry and alive, for example, the excavator loading operation is carried out. The working condition can be determined through various ways, for example, a registration form is adopted, namely, a user registers and records the excavator which performs certain work on a big data platform, the excavator which performs the registration record only performs the work of the corresponding working condition, and when the big data platform receives the information of the excavator, the user considers the work of the corresponding working condition of the work performed by the excavator.
The working condition can also be that the pressure information of hydraulic execution parts of the working device of the excavator, such as a movable arm oil cylinder, a bucket oil cylinder, a rotary motor and the like, is acquired through acquiring the related parameter information during the working of the excavator, for example, the pressure sensor 28, and the action of the whole excavator is judged through the acquired pressure and the time sequence of the pressure in time. The excavator has corresponding actions when working under certain working conditions, for example, when working under the working conditions such as excavating and loading, one working cycle of the excavator sequentially comprises the excavating action of the working device, the loading rotation action, the unloading action of the working device and the loading rotation action. The operation of the excavator at the moment can be judged by continuously acting the whole excavator in a certain short time, and the operation in the preset time is counted, so that the working condition of the excavator at the moment can be judged.
In order to accurately judge the working condition of the excavator, other operation data, such as one or more of information of an engine load rate, an engine rotating speed, an engine torque, a main pump pressure, an accelerator gear, a working mode and the like, can be collected and adopted on the basis of collecting the pressure information of the hydraulic actuating part of the excavator, so that comprehensive judgment can be carried out.
After the big data analysis platform determines the target excavator, a substep S12 is performed, and the cluster idle speed duty ratio of the excavator performing the working condition operation in the area within the preset time period is calculated.
The idling duty ratio of the cluster is the ratio of the total idling time length of the excavator cluster for working under the working condition to the total starting time length in the area within the preset time length, and the total idling time length is the sum of the time length when the excavator engine is in idling operation and the time length for automatically shutting down the engine according to the control method. Because the engine is also in idle operation during the heat engine, the heat engine time is related to the ambient temperature, the ambient temperature is high, the heat engine time is short, and the heat engine time is long when the ambient temperature is low, so the heat engine time is long or short. In order to improve accuracy, the idle time when the excavator heat engine is not counted when the total idle time is counted into the counted total idle time.
The total starting time is the total time after each excavator is started, and the time under the state of the heat engine and the time for automatically extinguishing the engine according to the control method of the invention can be counted into the total starting time or not counted into the total starting time.
The total idle time length and the total starting time length are counted, the excavators which perform working condition operation in the area within the preset time length are used as counting objects, the counted excavators can be the same or different in model, different weight coefficients can be set for different excavators, for example, the area is provided with 90-ton-level excavators for loading operation, 50-ton-level excavators for loading operation are also provided, if the weight coefficient of the 90-ton-level excavators is set to be 1, the weight coefficient of the 50-ton-level excavators can be set to be 0.5, namely, the working capacity of two 50-ton-level excavators is equivalent to the working capacity of one 90-ton-level excavators, and when the total idle time length is counted, the idle speed of one 50-ton-level excavators is equivalent to the idle speed of one 90-ton-level excavators for 1 minute for 30 seconds.
And the big data analysis platform calculates the idle speed duty ratio of the cluster and then sends the idle speed duty ratio of the cluster to each target excavator, or sends the idle speed duty ratio of the cluster to each target excavator when the idle speed duty ratio of the cluster is larger than a preset value.
Step S2: after the target excavator is started, the complete machine controller on the target excavator judges whether the target excavator meets the automatic stop condition of the engine stop operation according to the operation data of the target excavator.
The automatic stop condition is that the engine is in an idle running state, the target excavator is in a non-heat engine state, and the exhaust gas aftertreatment device is not in a regeneration state, and if the target excavator is in a heat engine state at the initial stage of engine starting or the exhaust gas aftertreatment device is in a regeneration state, the target excavator engine is considered to have no automatic stop condition even if the engine is in the idle running state.
The step of judging whether the target excavator is in the heat engine state is to acquire the hydraulic oil temperature and the engine coolant temperature, and judge that the target excavator is in the heat engine state when the engine is in idle operation and the hydraulic oil temperature and the engine coolant temperature are continuously rising.
When the target excavator meets the automatic stop condition, the pilot locking state of the target excavator is detected, and the target excavator needs to be unlocked when operating.
When the target excavator satisfies the automatic stop condition, there are two cases, one is that the pilot lock is in the locked state and the other is that the pilot lock is in the unlocked state, and sub-steps S21 and S22 are executed, respectively.
When the pilot lock is in the locked state, the process proceeds to a substep S21 of displaying a stop message indicating whether or not the engine is flameout on the instrument of the target excavator. At this point the operator can confirm the engine shutdown on the meter or cancel the engine shutdown to keep the engine running properly. If the operator does not select on the meter for a predetermined time, engine shutdown is performed by default. If the engine is automatically shut down, the controller uploads relevant data to the big data analysis platform, so that the big data analysis platform counts the time after the engine is automatically shut down when counting the total idle time.
If the target excavator meets the automatic stop condition and the pilot lock is in the unlocking state, a substep S22 is performed, namely, the idle speed duty ratio of the cluster is compared, and if the idle speed duty ratio of the cluster is larger than the preset value, stop information of whether the engine is flameout or not is displayed on an instrument of the target excavator. At this time, the operator can confirm the engine stop (the selection command is stop) on the instrument or cancel the engine stop (the selection command is keep running) so that the engine still keeps normal running. If the operator does not make a selection on the meter for a predetermined time, engine shutdown is performed by default. If the engine is automatically shut down, the controller uploads relevant data to the big data analysis platform, so that the big data analysis platform counts the time after the engine is automatically shut down when counting the total idle time.
After the target excavator engine automatically extinguishes, step S3 is performed, namely, a complete machine pilot operation signal is monitored, and if an operator operates a pilot operation device such as a hand pilot or a foot pilot to operate the excavator, and the excavator is intended to walk, turn around or act by a working device, the complete machine controller can detect the complete machine pilot operation signal and send an automatic starting instruction to the engine. The complete machine pilot operation signal may be an electric signal output when the electric control operation handle is operated, or a pilot pressure signal (the pilot pressure is larger than a predetermined value) on the pilot oil path detected by the pressure sensor. After the engine is automatically started after the automatic flameout and shutdown, the whole machine controller uploads relevant data to the big data analysis platform, so that the big data analysis platform counts the time length after the automatic flameout and shutdown of the engine when counting the total idle time length. According to the invention, each excavator transmits the self-running data to the big data analysis platform, the big data analysis platform analyzes the idling duty ratio of the cluster, and the idling duty ratio is used as a reference of the integral busyness degree of the cluster operation, and according to the busyness degree, a suggestion of whether the excavator engine stops or not is given when the excavator engine enters an idling state, so that the further energy saving is realized, and meanwhile, the operation of an operator is facilitated.
Claims (10)
1. An automatic start-stop control method for an excavator engine is characterized by comprising the following steps:
S1: collecting operation data of the excavators in real time and uploading the operation data to a big data analysis platform, analyzing and determining target excavators working under the same working condition in the same area by the big data analysis platform, calculating the cluster idle speed ratio of the excavators working under the working condition in the area within a preset time period, and sending the cluster idle speed ratio to each target excavators;
S2: the overall machine controller of each target excavator judges whether the overall machine controller meets the automatic stop condition of the engine stop operation according to the excavator operation data; displaying shutdown information of whether an engine is flameout or not on an instrument of a target excavator when the target excavator meets an automatic shutdown condition and the cluster idling ratio is larger than a preset value; controlling the engine to automatically flameout or keep running correspondingly according to the selection instruction on the instrument;
S3: after the target excavator engine is flameout, the complete machine controller monitors a complete machine pilot operation signal, and when the complete machine pilot operation signal is detected, the engine is automatically started;
The idling duty ratio of the cluster is the ratio of the total idling time length of the excavator cluster for working under the working condition to the total starting time length in the area within the preset time length, and the total idling time length is the sum of the automatic flameout time length of the engine and the time length when the excavator engine is in idling operation in the step S2.
2. The control method according to claim 1, characterized in that the step S2 of judging whether or not the automatic stop condition for the engine stop operation is satisfied includes a judging step of judging whether or not the excavator is in a thermo-mechanical state and a judging step of judging whether or not the exhaust gas aftertreatment device is in a regeneration state; and when the engine is in idle operation and the whole engine is in a non-heat engine state and the tail gas post-processor is in a non-regeneration state, judging that the excavator meets the automatic stop condition.
3. The control method according to claim 2, wherein the step of determining whether the excavator is in the thermo-mechanical state is to acquire the hydraulic oil temperature and the engine coolant temperature, and determine that the excavator is in the thermo-mechanical state when the engine is in idle operation and the hydraulic oil temperature and the engine coolant temperature are in continuous rise.
4. The control method according to claim 2, wherein in step S2, when the target excavator satisfies an automatic stop condition, a pilot lock state is detected, and when the pilot lock is in the lock state, stop information of whether the engine is flameout is displayed on an instrument of the target excavator and the engine is controlled to be flameout automatically or kept running correspondingly according to a selection instruction on the instrument; when the pilot locking is in an unlocking state and the cluster idling ratio is larger than a preset value, displaying shutdown information of whether the engine is flameout or not on an instrument of the target excavator, and correspondingly controlling the engine to be flameout or keep running according to a selection instruction on the instrument.
5. The control method according to claim 1, wherein different models are provided with different weight coefficients, and the total idle time is calculated according to the sum of the actual idle time of each excavator and the automatic engine stall time and the corresponding weight coefficient.
6. The control method according to claim 5, wherein the actual idle time period of each excavator does not include an idle time period when the excavator is in a thermo-mechanical state.
7. The control method according to claim 1, wherein the excavator operation data collected and uploaded to the big data analysis platform includes model information, engine operation data for determining an excavator operation state, positioning information for determining an excavator position, and working condition operation information for determining an excavator working condition.
8. The control method according to claim 7, wherein the operating condition operation information includes excavator hydraulic actuator pressure information; or in combination with one or more of engine load factor, engine speed, engine torque, main pump pressure, throttle gear, and operating mode information.
9. The control method according to any one of claims 1 to 8, characterized in that in step S2, the complete machine controller sends a flameout control instruction to the engine when no instruction to cancel the automatic flameout of the engine is input within a predetermined time after the stop information indicating whether the engine is flameout or not is displayed on the meter.
10. The automatic start-stop control system of the excavator engine is characterized by comprising a big data analysis platform, wherein the excavator comprises a data acquisition device for acquiring the operation data of the excavator in real time and uploading the operation data to the big data analysis platform;
The big data analysis platform analyzes and determines target excavators working under the same working condition in the same area according to the received operation data, calculates the cluster idle speed ratio of the excavators working under the working condition in the area within a preset time period and sends the cluster idle speed ratio to each target excavators;
the overall machine controller of the target excavator judges whether the overall machine controller meets the automatic stop condition of the engine stop operation according to the excavator operation data; displaying shutdown information of whether an engine is flameout or not on an instrument of a target excavator when the target excavator meets an automatic shutdown condition and the cluster idling ratio is larger than a preset value; the whole machine controller of the target excavator correspondingly controls the engine to automatically flameout or keep running according to a selection instruction on the instrument, and if the whole machine controller monitors a whole machine pilot operation signal after the automatic flameout and automatically starts the engine when the whole machine pilot operation signal is detected;
the idling duty ratio of the cluster is the ratio of the total idling time length of the cluster of the excavator for working under the working condition to the total starting time length in the area within the preset time length, and the total idling time length is the sum of the automatic flameout time length of the engine and the time length when the engine runs at the idling time according to the selection instruction on the instrument.
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