CN110847277A - Intelligent switching system and control method for power mode of loader engine - Google Patents
Intelligent switching system and control method for power mode of loader engine Download PDFInfo
- Publication number
- CN110847277A CN110847277A CN201911317400.4A CN201911317400A CN110847277A CN 110847277 A CN110847277 A CN 110847277A CN 201911317400 A CN201911317400 A CN 201911317400A CN 110847277 A CN110847277 A CN 110847277A
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- engine
- controller
- pressure sensor
- microcomputer controller
- gear
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Classifications
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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
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2029—Controlling the position of implements in function of its load, e.g. modifying the attitude of implements in accordance to vehicle speed
-
- 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
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2037—Coordinating the movements of the implement and of the frame
-
- 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
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
- E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
-
- 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
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2079—Control of mechanical transmission
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses an intelligent switching system and a control method for a power mode of a loader engine, belonging to the technical field of loaders and comprising a gearbox, an electric control engine, a microcomputer controller, an electric control engine controller, a gearbox controller, a gear shifting handle, a pressure sensor and a mode switching switch; the electric control engine controller inputs the rotating speed of the engine and the percentage of the output torque of the engine into the microcomputer controller through a communication port of the microcomputer controller; the transmission controller inputs the output rotating speed of the transmission and the gear information of the gear shifting handle into the microcomputer controller through a communication port of the transmission controller; the pressure sensor and the mode switch input signals to an input port of the microcomputer controller, and the microcomputer controller inputs control signals to a controller module of the electric control engine through a communication port. The invention can match different output powers of the engine, can effectively reduce the fuel consumption rate of the engine and can achieve better energy-saving effect.
Description
Technical Field
The invention belongs to the technical field of loaders, and particularly relates to an intelligent switching system and a control method for a power mode of a loader engine.
Background
The loader is an engineering mechanical vehicle widely applied to severe environments such as roads, railways, mines, buildings and the like, and the operation objects of the loader comprise various soils, gravels, lime materials, building bulk materials and the like, and the loader is mainly used for completing operations such as shoveling, loading, unloading, transporting and the like. Aiming at the typical V-shaped working condition of the loader, the single output power adopted by the engine has certain influence on the fuel consumption rate of the engine, and particularly, the large output power is needed in a heavy load stage, and the large output power is not needed in a light load stage. Therefore, the output power of the engine can be matched according to different working sections of the loader, and the fuel consumption rate of the engine is different under different output powers of the engine, so that the fuel consumption rate of the engine can be effectively reduced by matching different output powers of the engine, and a better energy-saving effect can be achieved.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides the intelligent switching system and the control method for the power mode of the loader engine.
The invention provides an intelligent power mode switching system of a loader engine, which comprises a gearbox, an electric control engine, a microcomputer controller, an electric control engine controller, a gearbox controller, a gear shifting handle, a pressure sensor and a mode switching switch, wherein the gearbox is connected with the electric control engine controller through the mode switching switch; wherein: the electric control engine controller inputs the rotating speed of the engine and the percentage of the output torque of the engine into the microcomputer controller through a communication port of the microcomputer controller; the transmission controller inputs the output rotating speed of the transmission and the gear information of the gear shifting handle into the microcomputer controller through a communication port of the transmission controller; the pressure sensor and the mode switch input signals to an input port of the microcomputer controller, and the microcomputer controller inputs control signals to a controller module of the electric control engine through a communication port.
Further, the pressure sensor includes: a movable arm large cavity pressure sensor and a bucket large cavity pressure sensor; and the boom big cavity pressure sensor and the bucket big cavity pressure sensor input signals to an input port of the microcomputer controller.
The second purpose of the invention is to provide a control method based on the intelligent switching system of the power mode of the loader engine, which comprises the following steps:
the first step is as follows: after the controller is powered on, initializing an input port, an output port and a control bus;
the second step is that: after the whole machine is started, receiving bus data, sampling data of each input port, judging whether parameter calibration is needed, and if the parameters are not needed to be calibrated, directly turning to the third step; if the parameters need to be calibrated, calibrating the corresponding parameters according to the corresponding calibration conditions;
the third step: sampling data of each input port and the percentage of engine torque sent by an electronic control engine controller, and determining the working state of the whole engine;
the fourth step: judging the running state of the vehicle according to the working state of the engine and the gear direction information;
the fifth step: judging whether the vehicle needs to carry out material excavation or not according to the running state of the vehicle and the output rotating speed of the gearbox sent by the gearbox controller;
and a sixth step: judging that the digging is being carried out, controlling the engine to switch to corresponding power through a bus command, and then judging the next working stage according to gear information;
the seventh step: entering a loaded lifting backward section, controlling the engine to switch to corresponding power through a bus command, and judging the next working stage according to a gear signal;
eighth step: entering an on-load lifting advancing section, controlling an engine to switch to a corresponding power requirement, and judging that the unloading of the whole machine is finished according to signals of a gear and a pressure sensor of a large cavity of a bucket;
the ninth step: after the unloading is finished, according to corresponding operation, entering a normal driving section or carrying out shovel loading at the next stage;
the tenth step: and transmitting data to be stored to the bus through the bus to perform real-time monitoring on variables and control parameters.
The invention has the advantages and positive effects that:
by adopting the technical scheme, the invention comprises the following steps:
1. can adapt to different digging working conditions.
2. Different working sections in the V-shaped operation of the loader can be accurately identified, and the output power of the engine can be accurately adjusted.
3. According to P, E and A mode set by the mode switch, the engine can output constant power and can automatically match the output power.
4. The automatic matching of the engine power mode can obviously reduce the oil consumption.
5. The engine can be matched with different types with electric control engines for use, and the workload of change is less.
Drawings
FIG. 1 is a system block diagram of a preferred embodiment of the present invention;
FIG. 2 is a flow chart of a preferred embodiment of the present invention;
FIG. 3 is a circuit diagram of a preferred embodiment of the present invention;
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
referring to fig. 1 to 3, an intelligent power mode switching system for a loader engine includes a gear shifting and speed changing device, an electric control engine, a microcomputer controller, an electric control engine controller, a transmission controller, a gear shifting handle switch, a pressure sensor and a mode switching switch; the electronic control engine controller inputs the engine speed and the engine output torque into the microcomputer controller through a communication port of the microcomputer controller; the gearbox controller inputs the information of the output rotating speed, the gear and the direction of the gearbox into the microcomputer controller through a communication port of the microcomputer controller; the pressure sensor and the mode switch input signals to the input port of the microcomputer controller, and the microcomputer controller inputs control signals to the controller module of the electric control engine through the communication port.
The pressure sensor comprises a movable arm large cavity pressure sensor and a bucket large cavity pressure sensor; the boom big cavity pressure sensor and the bucket big cavity pressure sensor input signals to the input port of the microcomputer controller.
A control method of an intelligent switching system of a loader engine power mode comprises the following steps:
the first step is as follows: after the controller is powered on, initializing an input port, an output port and a control bus;
the second step is that: after the whole machine is started, receiving bus data, sampling data of each input port, judging whether parameter calibration is needed, and if the parameters are not needed to be calibrated, directly turning to the third step; and if the parameters need to be calibrated, calibrating the corresponding parameters according to the corresponding calibration conditions.
The third step: and (4) sampling data of each input port and the percentage of the engine torque sent by the electronic control engine controller, and determining the working state of the whole engine.
The fourth step: and judging the running state of the vehicle according to the working state of the engine and the gear direction information.
The fifth step: and judging whether the vehicle needs to carry out material excavation or not according to the running state of the vehicle and the output rotating speed of the gearbox sent by the gearbox controller.
And a sixth step: and judging that the engine is digging, commanding the engine to switch to corresponding power through a bus, and judging the next working stage according to the gear information.
The seventh step: and entering a loaded lifting backward section, controlling the engine to switch to corresponding power through a bus command, and judging the next working stage according to the gear signal.
Eighth step: and entering an on-load lifting advancing section, controlling the engine to switch to a corresponding power requirement, and judging that the unloading of the whole machine is finished according to signals of a gear and a pressure sensor of a large cavity of the bucket.
The ninth step: after the unloading is finished, the vehicle enters a normal driving section or carries out the shovel loading of the next stage according to corresponding operation.
The tenth step: and transmitting data to be stored to the bus through the bus to perform real-time monitoring on variables and control parameters.
The specific control method of the loader power intelligent switching system comprises the following steps:
(1) after the controller is powered on, the input port, the output port and the control bus are initialized;
(2) judging whether the power mode is an A mode or not, and if the current power mode switch is the P mode or the E mode, outputting the corresponding constant power by the engine; if the power mode is the A mode, entering the next process;
(3) according to the output rotating speed and gear direction information of the whole gearbox, defining a gearbox output rotating speed threshold value, wherein the threshold value can be a value between 430 rpm and 480rpm, and judging that the loader is about to enter a digging working condition by adding gear information of a loading direction F and a 1 gear or a 2 gear; if the above condition is not satisfied, the loader performs a normal walking section.
(4) And entering a digging working condition according to the judgment of the third step, delaying for 500ms, and when the output rotating speed of the gearbox is less than 500-550 rpm, the output torque percentage of the engine is more than 80-90%, and the gear is changed to 1 gear, which indicates that the whole machine is digging, and controlling the engine to be matched with a corresponding high-power mode according to the judgment at the moment. And after the shovel section is judged, the next step is carried out.
(5) After waiting for 2000ms of debounce delay time, according to the N gear information of the gears, a driver can know that the driver is about to enter a backward unloading stage after tunneling. At this time, the shovel section is jumped out, and the next step is carried out.
(6) When the driver operating handle is changed to be R gear, the whole machine enters a loaded lifting backward section, and the engine is controlled to be matched with corresponding low power. In the process of backing, when the driver operates the N gear, the driver can know that the driver finishes the loaded lifting backing section, and then the driver jumps out of the loaded lifting backing section to enter the next process.
(7) Waiting for 1000ms of delay time, when a driver operates a handle to shift to an F gear, judging that the whole machine enters a loaded lifting forward section, and controlling an engine to be matched with corresponding high power through a CAN bus command. And (4) judging the forward lifting section with the load, and entering the next process.
(8) After the belt-carrying lifting forward section is judged, when the pressure of a large cavity of a movable arm is more than 2MPa and less than 10MPa, the delay time of 2000ms is waited, and at the moment, the whole machine can be judged to enter the unloading process. When the pressure of the large cavity of the bucket is greater than 2Mpa and less than 8Mpa and the gear direction is changed from F to N or R, the unloading of the whole machine is judged to be finished, and the next step is carried out.
(9) And after unloading is finished, the engine is matched with low power and enters an idle running section, and if the complete machine needs to perform the next operation cycle, the program returns and is circularly executed according to a sequential mode. Otherwise the engine matches the low power and enters a wait state.
Referring to fig. 3, fig. 3 is a circuit diagram of an embodiment, in which the types of electronic components and their connection relationships are shown.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (3)
1. The utility model provides a loader engine power mode intelligence switched systems, includes gearbox and automatically controlled engine, characterized by: at least still include: the system comprises a microcomputer controller, an electric control engine controller, a gearbox controller, a gear shifting handle, a pressure sensor and a mode selector switch; wherein: the electric control engine controller inputs the rotating speed of the engine and the percentage of the output torque of the engine into the microcomputer controller through a communication port of the microcomputer controller; the transmission controller inputs the output rotating speed of the transmission and the gear information of the gear shifting handle into the microcomputer controller through a communication port of the transmission controller; the pressure sensor and the mode switch input signals to an input port of the microcomputer controller, and the microcomputer controller inputs control signals to a controller module of the electric control engine through a communication port.
2. The loader engine power mode intelligent switching system of claim 1, wherein the pressure sensor comprises: a movable arm large cavity pressure sensor and a bucket large cavity pressure sensor; and the boom big cavity pressure sensor and the bucket big cavity pressure sensor input signals to an input port of the microcomputer controller.
3. A control method based on the intelligent switching system of the power mode of the loader engine in claim 1 or 2, which is characterized by comprising the following steps: the method comprises the following steps:
the first step is as follows: after the controller is powered on, initializing an input port, an output port and a control bus;
the second step is that: after the whole machine is started, receiving bus data, sampling data of each input port, judging whether parameter calibration is needed, and if the parameters are not needed to be calibrated, directly turning to the third step; if the parameters need to be calibrated, calibrating the corresponding parameters according to the corresponding calibration conditions;
the third step: sampling data of each input port and the percentage of engine torque sent by an electronic control engine controller, and determining the working state of the whole engine;
the fourth step: judging the running state of the vehicle according to the working state of the engine and the gear direction information;
the fifth step: judging whether the vehicle needs to carry out material excavation or not according to the running state of the vehicle and the output rotating speed of the gearbox sent by the gearbox controller;
and a sixth step: judging that the digging is being carried out, controlling the engine to switch to corresponding power through a bus command, and then judging the next working stage according to gear information;
the seventh step: entering a loaded lifting backward section, controlling the engine to switch to corresponding power through a bus command, and judging the next working stage according to a gear signal;
eighth step: entering an on-load lifting advancing section, controlling an engine to switch to a corresponding power requirement, and judging that the unloading of the whole machine is finished according to signals of a gear and a pressure sensor of a large cavity of a bucket;
the ninth step: after the unloading is finished, according to corresponding operation, entering a normal driving section or carrying out shovel loading at the next stage;
the tenth step: and transmitting data to be stored to the bus through the bus to perform real-time monitoring on variables and control parameters.
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CN201911317400.4A CN110847277A (en) | 2019-12-19 | 2019-12-19 | Intelligent switching system and control method for power mode of loader engine |
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CN201911317400.4A CN110847277A (en) | 2019-12-19 | 2019-12-19 | Intelligent switching system and control method for power mode of loader engine |
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CN206298919U (en) * | 2016-08-31 | 2017-07-04 | 徐工集团工程机械有限公司 | For the system and engineering truck of the work pattern that automatically switches |
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CN109359524A (en) * | 2018-09-07 | 2019-02-19 | 长安大学 | A kind of loading machine operating mode's switch model construction and recognition methods |
CN110206090A (en) * | 2019-04-28 | 2019-09-06 | 江苏徐工工程机械研究院有限公司 | A kind of loading mechanical shovel pretends industry shift control method, apparatus and system |
CN211849706U (en) * | 2019-12-19 | 2020-11-03 | 天津工程机械研究院有限公司 | Loader engine power mode switching system |
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2019
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Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101216101A (en) * | 2007-12-28 | 2008-07-09 | 天津工程机械研究院 | Hydraulic-mechanical transmission engineering machinery automatic shifting speed variator and control method |
CN201152357Y (en) * | 2007-12-28 | 2008-11-19 | 天津工程机械研究院 | Hydraulic-mechanical transmission engineering machinery automatic shifting speed variator |
KR20160133325A (en) * | 2015-05-12 | 2016-11-22 | 두산인프라코어 주식회사 | Method of controlling wheel loader |
CN205000394U (en) * | 2015-07-27 | 2016-01-27 | 徐工集团工程机械股份有限公司科技分公司 | Multifunctional handle maneuvering control system for loader |
CN206298919U (en) * | 2016-08-31 | 2017-07-04 | 徐工集团工程机械有限公司 | For the system and engineering truck of the work pattern that automatically switches |
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