Engine control device, method and excavator based on working condition adaptation

Abstract

The present invention discloses an engine control device, method and excavator based on working condition self - adaptation, including a data acquisition and storage device, a monitor, a controller and an engine controller; the data acquisition and storage device is connected to the controller and sends the collected vehicle operation information to the controller; the controller generates the corresponding relationship between different standard working modes and engine parameters based on the vehicle operation information and sends it to the engine controller; the monitor sends the collected standard working mode selected by the user to the controller; the controller sends the standard working mode received from the monitor to the engine controller, and the engine controller reads the corresponding engine parameters according to the received standard working mode and controls the engine to adapt to different standard working modes by using the engine parameters. The present invention designs different engine parameters for different standard working modes to reduce fuel waste, improve the fuel economy of the engine, and ultimately achieve the effect of energy conservation.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction machinery, and particularly relates to an engine control device, a method and an excavator based on working condition adaption. Background Art

[0002] Improving fuel economy is a performance index that has been pursued in the field of excavators and even the entire construction machinery field, and it is also a key technology that urgently needs to be broken through. Most of the existing methods use the power of the hydraulic system to passively match the engine characteristics, which has achieved a certain energy-saving effect. However, this method is restricted by the characteristics of the engine torque, fuel, etc., and cannot achieve precise matching (especially when operating under different working conditions), and is limited by the characteristics of the engine itself, making it difficult to achieve the optimal effect. How to solve the problem of energy-saving and high-efficiency needs to be solved from the engine, the power source of the whole machine, in order to achieve a better effect, but there is no good solution at present.

[0003] Disclosing the information of this background art section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0004] In view of the above problems, the present invention proposes an engine control device, a method and an excavator based on working condition adaption, and designs different engine parameters for different standard working modes to reduce fuel waste, improve the fuel economy of the engine, and ultimately achieve the effect of energy saving.

[0005] In order to achieve the above technical purpose and achieve the above technical effect, the present invention is realized through the following technical solutions:

[0006] In a first aspect, the present invention provides an engine control device based on working condition adaption, including a data acquisition and storage device, a monitor, a controller and an engine controller;

[0007] The data acquisition and storage device is connected to the controller and is used to send the collected vehicle operation information to the controller;

[0008] The controller generates the correspondence between different standard working modes and engine parameters based on the vehicle operation information, and sends the correspondence between different standard working modes and engine parameters to the engine controller;

[0009] The monitor sends the selected standard working mode collected by the user to the controller;

[0010] The controller sends the received standard working mode to the engine controller. The engine controller reads the corresponding engine parameters according to the received standard working mode, and controls the engine to adapt to different standard working modes by using the read engine parameters.

[0011] Optionally, the corresponding relationship between the different standard working modes and the engine parameters is obtained as follows:

[0012] Set n sample engines, and perform m rounds of cyclic operations for different standard working modes respectively;

[0013] Use the data acquisition and storage device to collect and store the vehicle operation information of n sample engines. The vehicle operation information includes different standard working modes and engine parameters;

[0014] Classify and process the collected vehicle operation information according to different standard working modes, and extract the engine parameters under each standard working mode;

[0015] Based on the engine parameters under each standard working mode, generate the engine working range distribution diagrams under different standard working modes, and obtain the numerical ranges of engine parameters under different standard working modes based on the engine working range distribution diagrams;

[0016] Design the engine parameter characteristic curves under different standard working modes based on the obtained numerical ranges of engine parameters. After verification, form the corresponding relationship between different standard working modes and engine parameters.

[0017] Optionally, the standard working modes include heavy load mode, economy mode, flat ground mode and side casting mode.

[0018] Optionally, the controller classifies and codes the standard working mode received from the monitor.

[0019] Optionally, the engine parameters include rotational speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume and air-fuel ratio.

[0020] Optionally, the data acquisition and storage device, the monitor, the engine controller and the controller are all connected by a CAN bus.

[0021] In a second aspect, the present invention provides an engine control method based on working condition adaptation, including:

[0022] Use the data acquisition and storage device to send the collected vehicle operation information to the controller;

[0023] The controller generates the correspondence between different standard working modes and engine parameters based on the vehicle operation information, and sends the correspondence between different standard working modes and engine parameters to the engine controller;

[0024] The monitor sends the selected standard working mode collected by the monitor to the controller;

[0025] The controller sends the standard working mode received from the monitor to the engine controller. The engine controller reads the corresponding engine parameters according to the received standard working mode, and uses the read engine parameters to control the engine to adapt to different standard working modes.

[0026] Optionally, the controller generates the correspondence between different standard working modes and engine parameters based on the vehicle operation information, specifically:

[0027] Set n sample engines, and perform m rounds of cyclic operations for different standard working modes respectively;

[0028] The data acquisition and storage device is used to collect and store the vehicle operation information of n sample engines, and the vehicle operation information includes different standard working modes and engine parameters;

[0029] Classify and process the collected vehicle operation information according to different standard working modes, and extract the engine parameters under each standard working mode;

[0030] Based on the engine parameters under each standard working mode, generate the engine working range distribution diagrams under different standard working modes, and obtain the numerical ranges of engine parameters under different standard working modes based on the engine working range distribution diagrams;

[0031] Based on the obtained numerical ranges of engine parameters, design the engine parameter characteristic curves under different standard working modes. After verification, form the correspondence between different standard working modes and engine parameters.

[0032] Optionally, the engine parameters include speed, torque, power, fuel consumption, intake air volume, injection pressure, injection volume, and air-fuel ratio.

[0033] In a third aspect, the present invention provides an excavator, including the engine control device according to any one of the first aspect.

[0034] Compared with the prior art, the beneficial effects of the present invention:

[0035] Based on a large amount of vehicle operation information of excavators under standard working conditions, the present invention extracts the corresponding relationship between different standard working modes and engine parameters, and stores it in the engine controller; when the engine receives different standard working mode instructions, the different standard working mode instructions are sent to the engine controller, and the engine controller automatically matches appropriate engine parameters to control the relevant actuators of the engine, achieving working condition adaptability and precise matching. Brief Description of the Drawings

[0036] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments in conjunction with the drawings, where:

[0037] Figure 1 is a structural schematic diagram of an engine control device according to an embodiment of the present invention;

[0038] Figure 2 is a flow schematic diagram of engine control based on working condition adaptability according to an embodiment of the present invention;

[0039] Wherein:

[0040] 1 - Monitor, 2 - Controller, 3 - Data acquisition and storage device, 4 - Engine controller. Detailed Embodiments

[0041] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following further details the present invention in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0042] The following describes in detail the application principle of the present invention in conjunction with the drawings.

[0043] Embodiment 1

[0044] An engine control device based on working condition adaptability is provided in an embodiment of the present invention, including a data acquisition and storage device 3, a monitor 1, a controller 2, an engine controller 4, and an electrical wiring harness for connecting each component, etc.;

[0045] The data acquisition and storage device 3 is connected to the controller 2, and is used for acquiring and storing the vehicle operation information of the engine, and sending the vehicle operation information to the controller 2;

[0046] The controller 2 generates the corresponding relationship between different standard working modes and engine parameters based on the vehicle operation information, and sends the corresponding relationship between different standard working modes and engine parameters to the engine controller 4;

[0047] The monitor 1 sends the selected standard working mode collected from the user to the controller 2. In the specific implementation process, the controller 2 can be connected to the monitor 1 and the engine controller 4 through the CAN bus for CAN communication. Specifically, the monitor 1 is used for human-machine interaction. The driver selects different standard working modes through the monitor 1. Different standard working modes correspond to different operating conditions, and at the same time, the standard working mode is sent to the controller 2.

[0048] The controller 2 can be used to realize the control of the whole machine, send the standard working mode received from the monitor 1 to the engine controller 4, and the engine controller 4 reads the corresponding engine parameters according to the received standard working mode, and uses the read engine parameters to control the engine to adapt to different standard working modes.

[0049] In summary, in the engine control device based on working condition self-adaptation in the embodiment of the present invention, based on a large amount of vehicle operation information of the excavator under standard working conditions, the corresponding relationship between different standard working modes and engine parameters is extracted and stored in the engine controller 4. When the engine receives different standard working mode instructions, the different standard working mode instructions are sent to the engine controller 4, and the engine controller 4 automatically matches appropriate engine parameters to realize the control of the engine-related actuators, achieve working condition self-adaptation, realize precise matching, reduce fuel waste, and finally achieve the effect of energy saving and improve the fuel economy of the engine.

[0050] In a specific implementation manner of the embodiment of the present invention, the corresponding relationship between different standard working modes and engine parameters is obtained as follows:

[0051] Set n sample engines, and perform m rounds of cyclic operations for different standard working modes respectively.

[0052] Use the data acquisition and storage device 3 to collect and store the vehicle operation information of n sample engines. The vehicle operation information includes different standard working modes and engine parameters.

[0053] Classify and process the collected vehicle operation information according to different standard working modes, and extract the engine parameters under each standard working mode.

[0054] Based on the engine parameters under each standard working mode, generate an engine working domain distribution map under different standard working modes, and obtain the numerical range of engine parameters under different standard working modes based on the engine working domain distribution map.

[0055] Based on the obtained numerical ranges of engine parameters, the characteristic curves of engine parameters under different standard working modes are designed. After verification, the corresponding relationship between different standard working modes and engine parameters is formed.

[0056] In a specific embodiment of the present invention, the standard working modes include a heavy-load mode, an economy mode, a flat-ground mode, and a side-casting mode. For the convenience of communication, the controller 2 classifies and encodes the standard working modes received from the monitor 1.

[0057] In a specific embodiment of the present invention, the engine parameters include speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, and air-fuel ratio. In the specific implementation process, the engine parameters may further include more data, which can be designed according to actual needs.

[0058] To make the technical means, creative features, achieved purposes, and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0059] The standard working modes, including common working modes of an excavator such as a heavy-load mode, an economy mode, a flat-ground mode, and a side-casting mode, are set in the monitor 1, and these common standard working modes are classified and encoded for the convenience of communication. The driver can select different standard working modes through the interface of the monitor 1 for operation.

[0060] Set n sample excavators, and perform m rounds of cyclic operations for the same standard working mode. The data acquisition and storage device 3 acquires and stores the whole-machine operation information of these n excavators during operation in the standard mode, including speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, air-fuel ratio, standard working mode, etc.

[0061] The collected whole-machine operation information is classified according to different standard working modes, and the engine parameter data such as speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, and air-fuel ratio under each standard working mode are extracted; based on the engine parameters under each standard working mode, the engine working domain distribution diagrams under different standard working modes are generated, and the numerical ranges of engine parameters under different standard working modes are obtained based on the engine working domain distribution diagrams; based on the obtained numerical ranges of engine parameters, the characteristic curves of engine parameters under different standard working modes are designed. After verification, the corresponding relationship between different standard working modes and engine parameters is formed.

[0062] For example, in the heavy load mode, the whole vehicle focuses on high-efficiency operation. At this time, the injection pressure, injection quantity can be increased, the injection time can be adjusted, etc. At the same time, the intake air volume and intake air pressure are increased to make the combustion more complete. The instantaneous response, output torque and power of the engine are significantly improved, realizing the high-efficiency operation of the whole vehicle; in the light load mode such as on flat ground, the whole vehicle pays more attention to the energy-saving effect. By reducing the injection quantity, injection rate, adjusting the injection method and other methods, the fuel consumption is reduced to achieve the energy-saving effect. In this way, the engine can achieve the optimal characteristic matching under different working conditions.

[0063] Taking an excavator of a certain tonnage as an example, after analyzing the data obtained by the data acquisition and storage device 3, in the heavy load mode, the engine operating speed is concentrated between 1650 - 1850 rpm, and the torque is mainly distributed between 600 - 800 N.m; in the economic mode, the engine operating speed is concentrated between 1450 - 1600 rpm, and the torque is mainly distributed between 400 - 500 N.m. In the heavy load mode, high-efficiency operation is the primary goal. At a speed of 1650 - 1850 rpm, the maximum intake air volume and maximum injection quantity are increased, and the maximum torque limit of the engine is increased, so that the maximum torque reserve of the engine is increased to meet the requirements of high load and high efficiency; in the economic mode, the load is small and the energy-saving effect requirement is relatively high. At 1450 - 1600 rpm, the maximum intake air volume, intake air pressure, maximum injection quantity are limited, and the injection time is adjusted to reduce the fuel consumption to achieve the energy-saving effect. In this way, the engine can achieve the optimal characteristic matching under different working conditions.

[0064] After verifying the engine parameters (including speed, torque, intake air volume, injection pressure, injection quantity, air-fuel ratio, etc.) formulated under the above-mentioned different standard working modes (i.e., different working conditions), a parameter library is formed and stored in the engine controller 4.

[0065] At the same time, the information collected by the data acquisition and storage device 3 can obtain the distribution of the common speed, power, etc. under the standard working mode. Based on this, the controller 2 sets the speed and power control parameters such as the hydraulic system under each standard working mode, so that the engine control and the hydraulic system control are combined to achieve the optimal matching of the whole vehicle.

[0066] When the controller 2 receives the standard working mode information sent by the monitor 1, the controller 2 sends the standard working mode information to the engine controller 4. The engine controller 4 matches the optimal engine parameters under the corresponding working conditions according to the current standard working mode information, thereby improving the adaptability of the engine to the working conditions and improving the performance of the whole machine.

[0067] Taking the economic mode as an example to elaborate on the control process involved in this invention patent:

[0068] The driver selects the economy mode through Monitor 1. The economy mode can be represented by the binary code 01. Monitor 1 sends the code 01 to Controller 2. When Controller 2 receives the 01 code, it sends the 01 code to Engine Controller 4. Engine Controller 4 calls the stored parameters such as rotational speed and power under the corresponding standard working mode, and controls parameters such as fuel injection quantity, fuel injection rate, adjusts fuel injection mode, adjusts intake and exhaust volume, etc. within the common rotational speed range to reduce fuel consumption and achieve the purpose of energy conservation.

[0069] Embodiment 2

[0070] In an embodiment of the present invention, an engine control method based on operating condition adaption is provided. As Figure 2 shown, it includes the following steps:

[0071] Use the data acquisition and storage device to send the collected vehicle operation information to the controller;

[0072] Use the controller to generate the corresponding relationship between different standard working modes and engine parameters based on the vehicle operation information, and send the corresponding relationship between different standard working modes and engine parameters to the engine controller;

[0073] Use the monitor to send the selected standard working mode collected by the user to the controller;

[0074] Use the controller to send the standard working mode received from the monitor to the engine controller. The engine controller reads the corresponding engine parameters according to the received standard working mode, and uses the read engine parameters to control the engine to adapt to different standard working modes.

[0075] In an embodiment of the present invention, an engine control device based on operating condition adaption is provided, including a data acquisition and storage device 3, a monitor 1, a controller 2, an engine controller 4, and an electrical wiring harness for connecting each component, etc.;

[0076] The data acquisition and storage device 3 is connected to the controller 2, and is used for collecting and storing the vehicle operation information of the engine, and sending the vehicle operation information to the controller 2;

[0077] The controller 2 generates the corresponding relationship between different standard working modes and engine parameters based on the vehicle operation information, and sends the corresponding relationship between different standard working modes and engine parameters to the engine controller 4;

[0078] The monitor 1 sends the selected standard working mode collected by the user to the controller 2; in the specific implementation process, the controller 2 can be connected to the monitor 1 and the engine controller 4 through the CAN bus for CAN communication; specifically, the monitor 1 is used for human-machine interaction, and the driver selects different standard working modes through the monitor 1. Different standard working modes correspond to different operating conditions, and at the same time, the standard working mode is sent to the controller 2;

[0079] The controller 2 can be used to realize the control of the whole machine, send the standard working mode received from the monitor 1 to the engine controller 4, and the engine controller 4 reads the corresponding engine parameters according to the received standard working mode, and uses the read engine parameters to control the engine to adapt to different standard working modes.

[0080] In summary, in the engine control device based on working condition adaptation in the embodiment of the present invention, the present invention extracts the corresponding relationship between different standard working modes and engine parameters based on a large amount of vehicle operation information of excavators under standard working conditions, and stores it in the engine controller 4; when the engine receives different standard working mode commands, it sends different standard working mode commands to the engine controller 4, and the engine controller 4 automatically matches appropriate engine parameters to realize the control of the engine-related actuators, achieve working condition adaptation, realize precise matching, reduce fuel waste, and finally achieve the effect of energy saving and improve the fuel economy of the engine.

[0081] In a specific implementation manner of the embodiment of the present invention, the corresponding relationship between different standard working modes and engine parameters is obtained as follows:

[0082] Set n sample engines and perform m rounds of cyclic operation for different standard working modes respectively;

[0083] Use the data acquisition and storage device 3 to collect and store the vehicle operation information of n sample engines, and the vehicle operation information includes different standard working modes and engine parameters;

[0084] Classify and process the collected vehicle operation information according to different standard working modes, and extract the engine parameters under each standard working mode;

[0085] Based on the engine parameters under each standard working mode, generate the engine working domain distribution diagram under different standard working modes, and obtain the numerical range of engine parameters under different standard working modes based on the engine working domain distribution diagram;

[0086] Based on the obtained numerical ranges of engine parameters, the characteristic curves of engine parameters under different standard working modes are designed. After verification, the corresponding relationship between different standard working modes and engine parameters is formed.

[0087] In a specific implementation manner of the embodiment of the present invention, the standard working modes include a heavy load mode, an economy mode, a flat ground mode, and a material throwing mode. For the convenience of communication, the controller 2 classifies and codes the standard working modes received from the monitor 1.

[0088] In a specific implementation manner of the embodiment of the present invention, the engine parameters include rotational speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, and air-fuel ratio. In the specific implementation process, the engine parameters may further include more data, which can be designed according to actual needs.

[0089] To make the technical means, creative features, achieved purposes, and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0090] Standard working modes are set in the monitor 1, including common working modes of excavators such as a heavy load mode, an economy mode, a flat ground mode, and a material throwing mode, and these common standard working modes are classified and coded for convenient communication. The driver can select different standard working modes through the interface of the monitor 1 for operation.

[0091] n sample excavators are set, and m rounds of cyclic operations are performed for the same standard working mode. The data acquisition and storage device 3 acquires and stores the whole machine operation information during the operation of these n excavators in the standard mode, including rotational speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, air-fuel ratio, standard working mode, etc.

[0092] The acquired whole machine operation information is classified and processed according to different standard working modes, and engine parameter data such as rotational speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, and air-fuel ratio under each standard working mode are extracted; based on the engine parameters under each standard working mode, an engine working domain distribution map under different standard working modes is generated, and based on the engine working domain distribution map, the numerical ranges of engine parameters under different standard working modes are obtained; based on the obtained numerical ranges of engine parameters, the characteristic curves of engine parameters under different standard working modes are designed. After verification, the corresponding relationship between different standard working modes and engine parameters is formed.

[0093] For example, in the heavy-load mode, the whole vehicle focuses on high-efficiency operation. At this time, the injection pressure, injection quantity can be increased, the injection time can be adjusted, etc. At the same time, the intake air volume and intake air pressure are increased to make the combustion more complete, and the instantaneous response, output torque and power of the engine are significantly improved, realizing the high-efficiency operation of the whole vehicle; in the light-load mode such as on flat ground, the whole vehicle pays more attention to the energy-saving effect. By reducing the injection quantity, injection rate, adjusting the injection method and other methods, the fuel consumption is reduced to achieve the energy-saving effect. In this way, the engine can achieve the optimal characteristic matching under different working conditions.

[0094] Taking an excavator of a certain tonnage as an example, after analyzing the data obtained by the data acquisition and storage device 3, in the heavy-load mode, the engine operating speed is concentrated between 1650 - 1850 rpm, and the torque is mainly distributed between 600 - 800 N.m; in the economy mode, the engine operating speed is concentrated between 1450 - 1600 rpm, and the torque is mainly distributed between 400 - 500 N.m. In the heavy-load mode, high-efficiency operation is the primary goal. When the speed is between 1650 - 1850 rpm, the maximum intake air volume and maximum injection quantity are increased, and the maximum torque limit of the engine is increased, so that the maximum torque reserve of the engine is increased to meet the requirements of high load and high efficiency; in the economy mode, the load is small and the energy-saving effect requirement is relatively high. At 1450 - 1600 rpm, the maximum intake air volume, intake air pressure, maximum injection quantity are limited, and the injection time is adjusted to reduce the fuel consumption to achieve the energy-saving effect. In this way, the engine can achieve the optimal characteristic matching under different working conditions.

[0095] After verifying the engine parameters (including speed, torque, intake air volume, injection pressure, injection quantity, air-fuel ratio, etc.) formulated under the above-mentioned different standard working modes (i.e., different working conditions), a parameter library is formed and stored in the engine controller 4.

[0096] At the same time, the information collected by the data acquisition and storage device 3 can obtain the distribution of the common speed, power, etc. under the standard working mode. The controller 2 sets the speed and power control parameters such as the hydraulic system under each standard working mode accordingly, so that the engine control and the hydraulic system control are combined to achieve the optimal matching of the whole vehicle.

[0097] When the controller 2 receives the standard working mode information sent by the monitor 1, the controller 2 sends the standard working mode information to the engine controller 4. The engine controller 4 matches the optimal engine parameters under the corresponding working conditions according to the current standard working mode information, thereby improving the adaptability of the engine to the working conditions and improving the performance of the whole machine.

[0098] Taking the economy mode as an example to elaborate on the control process involved in this invention patent:

[0099] The driver selects the economic mode through Monitor 1. The economic mode can be represented by the binary code 01. Monitor 1 sends the code 01 to Controller 2. When Controller 2 receives the 01 code, it sends the 01 code to Engine Controller 4. Engine Controller 4 calls the stored engine parameters such as the rotational speed and power under the corresponding standard operating mode, and controls parameters such as the fuel injection quantity, fuel injection rate, adjusts the fuel injection method, and adjusts the intake and exhaust volume within the common rotational speed range to reduce fuel consumption and achieve the purpose of energy conservation.

[0100] Embodiment 3

[0101] The present invention provides an excavator, which includes the engine control device described in any one of Embodiment 1.

[0102] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An engine control device based on operating condition self - adaptation, characterized in that: It includes a data acquisition and storage device, a monitor, a controller, and an engine controller; The data acquisition and storage device is connected to the controller and is used to send the collected vehicle operation information to the controller; The controller generates the correspondence between different standard working modes and engine parameters based on the vehicle operation information, and sends the correspondence between different standard working modes and engine parameters to the engine controller; The monitor sends the collected user-selected standard working mode to the controller; The controller sends the standard working mode received from the monitor to the engine controller. The engine controller reads the corresponding engine parameters according to the received standard working mode, and uses the read engine parameters to control the engine to adapt to different standard working modes; The correspondence between different standard working modes and engine parameters is obtained as follows: Set n sample engines and perform m rounds of cyclic operations for different standard working modes respectively; Use the data acquisition and storage device to collect and store the vehicle operation information of n sample engines. The vehicle operation information includes different standard working modes and engine parameters; Classify and process the collected vehicle operation information according to different standard working modes, and extract the engine parameters under each standard working mode; Based on the engine parameters under each standard working mode, generate the engine working domain distribution diagrams under different standard working modes, and obtain the numerical ranges of engine parameters under different standard working modes based on the engine working domain distribution diagrams; Design the engine parameter characteristic curves under different standard working modes based on the obtained numerical ranges of engine parameters. After verification, form the correspondence between different standard working modes and engine parameters; The engine parameters include rotational speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, and air-fuel ratio.

2. The engine control device based on operating condition self - adaptation according to claim 1, characterized in that: The standard working modes include heavy load mode, economic mode, flat ground mode, and material throwing mode.

3. An engine control device based on operating condition self - adaptation according to claim 1, characterized in that: The controller classifies and codes the standard working mode received from the monitor.

4. An engine control device based on operating condition self - adaptation according to claim 1, characterized in that: The data acquisition and storage device, the monitor, the engine controller and the controller are all connected by a CAN bus.

5. An engine control method based on operating condition self - adaptation, characterized in that, It includes: Use the data acquisition and storage device to send the collected vehicle operation information to the controller; Use the controller to generate the correspondence between different standard working modes and engine parameters based on the vehicle operation information, and send the correspondence between different standard working modes and engine parameters to the engine controller; Use the monitor to send the collected user-selected standard working mode to the controller; Use the controller to send the standard working mode received from the monitor to the engine controller. The engine controller reads the corresponding engine parameters according to the received standard working mode, and uses the read engine parameters to control the engine to adapt to different standard working modes; The correspondence between different standard working modes and engine parameters is obtained as follows: Set n sample engines and perform m rounds of cyclic operations for different standard working modes respectively; Collect and store the vehicle operation information of n sample engines by using the data acquisition and storage device, where the vehicle operation information includes different standard working modes and engine parameters; Classify the collected vehicle operation information according to different standard working modes, and extract the engine parameters under each standard working mode; Based on the engine parameters under each standard working mode, generate the engine working domain distribution diagrams under different standard working modes, and obtain the numerical ranges of the engine parameters under different standard working modes based on the engine working domain distribution diagrams; Design the engine parameter characteristic curves under different standard working modes based on the obtained numerical ranges of the engine parameters. After verification, form the corresponding relationship between different standard working modes and engine parameters; The engine parameters include rotational speed, torque, power, fuel consumption, intake air volume, injection pressure, fuel injection volume, and air-fuel ratio.

6. An excavator, characterized in that, Include the engine control device according to any one of claims 1-4.

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