CN115163322A

CN115163322A - Smoke intensity limit value correction method and device, engineering equipment and readable storage medium

Info

Publication number: CN115163322A
Application number: CN202210968534.8A
Authority: CN
Inventors: 李志强; 缪丰隆; 张忠乐
Original assignee: Hunan Deutz Power Co Ltd
Current assignee: Hunan Deutz Power Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-10-11
Anticipated expiration: 2042-08-12
Also published as: CN115163322B

Abstract

The invention provides a smoke limit value correction method, a smoke limit value correction device, engineering equipment and a readable storage medium, wherein the smoke limit value correction method is used for the engineering equipment, the engineering equipment comprises a hydraulic system and an engine, and the correction method comprises the following steps: under the condition that a hydraulic system works, determining the smoke limit value of the engine according to the running information of the engine; determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment; and correcting the smoke limit value according to the revised value.

Description

Smoke intensity limit value correction method and device, engineering equipment and readable storage medium

Technical Field

The invention relates to the field of engine control, in particular to a smoke limit correction method and device, engineering equipment and a readable storage medium.

Background

In the related technology, when a hydraulic system arranged on a pump truck works at a low temperature, an engine is required to output a large torque to provide power for the hydraulic system, and when the engine is located in a high-altitude area and the environmental temperature is low, the engine is limited by a smoke limit value, so that the fuel injection quantity is reduced, and the loading capacity of the engine is poor.

Disclosure of Invention

The present invention is directed to solving at least the problems of the prior art or the related art.

To this end, the first aspect of the invention provides a method for correcting the smoke limit.

A second aspect of the invention provides a smoke limit correction apparatus.

A third aspect of the invention provides a smoke limit correction apparatus.

A fourth aspect of the invention provides a readable storage medium.

A fifth aspect of the invention provides an engineering apparatus.

In view of the above, a first aspect of the present invention provides a method for correcting a smoke limit value, which is used for engineering equipment, where the engineering equipment includes a hydraulic system and an engine, and the method includes: under the condition that a hydraulic system works, determining the smoke intensity limit value of the engine according to the running information of the engine; determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment; and correcting the smoke limit value according to the revised value.

In the technical scheme of the invention, an engine controller determines the working state of a hydraulic system, determines to correct the smoke limit value of the engine under the working state of the hydraulic system, specifically determines the smoke limit value of the engine according to the running information of the engine, determines a revised value according to the running information of the hydraulic system and the environment information of engineering equipment, and corrects the smoke limit value according to the revised value.

In the technical scheme, when the hydraulic system works at a low temperature, the viscosity of hydraulic oil in the hydraulic system is high, so that the resistance of the hydraulic system is high, and at the moment, the engine is required to output high torque to provide power for the hydraulic system, therefore, when the hydraulic system is in a non-working state, the engine does not provide power for the hydraulic system, when the hydraulic system is in a working state, the engine is required to provide power for the hydraulic system, the magnitude of the power which can be provided for the hydraulic system by the engine is limited by the fuel injection quantity of the engine, when the fuel injection quantity is reduced, the loading capacity of the engine is reduced, namely, the power provided for the hydraulic system is reduced, the fuel injection quantity of the engine is limited by the smoke limit value, and the engine controller corrects the smoke limit value of the engine under the working condition of the hydraulic system, so that the engine can output high power, the loading capacity of the engine is improved, and the problem that the engine is easy to flameout under a low air pressure is solved.

In any of the above technical solutions, the hydraulic system can convert pressure kinetic energy of liquid into mechanical energy, and is composed of five parts, namely, a power element, an execution element, a control element, an auxiliary element and hydraulic oil, and includes two types, namely, a hydraulic transmission system and a hydraulic control system, wherein the hydraulic transmission system mainly functions in transmitting power and motion, and the hydraulic control system enables the output of the hydraulic system to meet specific performance requirements and can provide power for machines operating on turntables, supports, mechanical arms and the like on engineering equipment.

In any of the above technical solutions, the engine controller may determine whether the hydraulic system is in a working state according to information sent by the upper controller, where the engine controller is used to monitor and control the engine, and the upper controller is used to monitor and control the hydraulic system. Illustratively, the engine controller receives a rotating speed control message of the upper-mounted controller, when the hydraulic system starts to work, the upper-mounted controller sends the rotating speed control message to the engine controller, and when the engine controller receives the rotating speed control message, the hydraulic system at the moment can be determined to be in a working state, the hydraulic system at the moment needs the engine to provide power for the engine, and the engine controller corrects the smoke limit value of the engine, so that the engine controller can adjust the fuel injection quantity of the engine according to the corrected smoke limit value, and the loading capacity of the engine is improved.

In any of the above technical solutions, the engine Controller and the upper-mounted Controller may be in communication connection in a CAN (Controller Area Network) bus manner.

In any of the above solutions, the smoke limit value is a value that the smoke value of the engine cannot reach, and the smoke value is a value of soot contained in gas discharged when fuel in the engine is burned.

According to the correction method of the smoke limit value provided by the invention, the following additional technical characteristics can be provided:

in any of the above technical solutions, the operation information of the hydraulic system includes a temperature value of hydraulic oil, the environment information includes altitude information, and the revision value is determined according to the operation information of the hydraulic system and the environment information where the engineering equipment is located, which specifically includes: acquiring a first corresponding relation between a temperature value, altitude information and a revised value of hydraulic oil; the revised value is determined based on the first correspondence, the temperature value of the hydraulic oil, and the altitude information.

In the above technical solution, the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the environment information includes altitude information, wherein the determining of the revision value according to the operation information of the hydraulic system and the environment information where the engineering equipment is located is specifically that the engine control system acquires the temperature value of the hydraulic oil, a first correspondence between the altitude information and the revision value, determines the revision value according to the temperature value of the hydraulic oil and the altitude information based on the first correspondence, and determines the revision value directly through the correspondence by presetting the correspondence between the temperature value of the hydraulic oil, the altitude information and the revision value, thereby simplifying the process of determining the revision value.

In the technical scheme, when the engineering equipment is in an environment with a higher altitude and a lower temperature, hydraulic oil in the hydraulic system is lower in temperature and higher in viscosity, so that the resistance of the hydraulic system is higher, the hydraulic system needs the engine to output a larger torque to provide power for the engine after being started, but the engine is limited by the smoke limit value at the moment, so that the fuel injection quantity of the engine is reduced, and therefore the first corresponding relation among the temperature value, the altitude information and the revision value of the hydraulic oil needs to be determined, so that the smoke limit value in the environment can be corrected by the engine control system according to the revision value, and the condition that the rotating speed of the engine is unstable and the speed is reduced or the engine stalls when the altitude and the temperature of the hydraulic oil are lower is avoided.

In any of the above technical solutions, since the atmospheric pressures at different altitudes have different values, the atmospheric pressure information of the environment where the engineering equipment is located may be used to indicate the altitude information where the engineering equipment is located.

In any one of the above technical solutions, the operation information of the engine includes fuel injection amount information and rotation speed information, and the smoke limit value of the engine is determined according to the operation information of the engine, which specifically includes: acquiring a second corresponding relation between the fuel injection quantity information, the rotating speed information and the smoke intensity limit value; and determining the smoke limit value based on the second corresponding relation, the fuel injection quantity information and the rotating speed information.

In the technical scheme, the operation information of the engine comprises fuel injection amount information and rotating speed information, and the specific step of determining the smoke limit value of the engine according to the operation information of the engine comprises the steps of obtaining a second corresponding relation between the current fuel injection amount information and the rotating speed information of the engine and the smoke limit value by an engine controller, and determining the smoke limit value according to the current fuel injection amount information and the rotating speed information of the engine based on the second corresponding relation.

In any of the above technical solutions, after the smoke limit is corrected according to the revised value, the correction method further includes: determining a first fuel injection quantity of the engine according to the smoke limit value; and controlling the engine to inject fuel with the first fuel injection quantity.

In the technical scheme, after the engine controller corrects the smoke limit according to the revised value, the engine controller determines the first oil injection quantity of the engine according to the smoke limit and controls the engine to inject oil according to the first oil injection quantity, so that the engine control system can adjust the oil injection quantity according to the smoke limit and control the engine to inject oil according to the most appropriate oil injection quantity, and the loading capacity of the engine is improved.

In any of the above technical solutions, in a case where the hydraulic system is not operating, the correction method further includes: determining a smoke limit value of the engine according to the operation information of the engine; determining a second fuel injection quantity of the engine according to the smoke limit value; and controlling the engine to inject the fuel with the second fuel injection quantity.

In the technical scheme, when the engine controller determines that the hydraulic system is in a non-working state, the smoke limit value of the engine is determined according to the current fuel injection amount information and the rotating speed information (namely the running information of the engine), the engine controller determines the second fuel injection amount of the engine according to the current smoke limit value, and controls the engine to inject fuel according to the second fuel injection amount, so that the engine control system can directly adjust the fuel injection amount according to the smoke limit value.

In any of the above technical solutions, the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the correction method further includes: acquiring a temperature value of hydraulic oil after a hydraulic system is started; under the condition that the temperature value is less than or equal to the preset temperature, the step of determining the smoke limit value of the engine according to the running information of the engine is executed again; acquiring current operation information of the engine under the condition that the temperature value is greater than the preset temperature; and determining a current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In the technical scheme, the operation information of the hydraulic system comprises a temperature value of hydraulic oil, the engine control system obtains the temperature value of the hydraulic oil after the hydraulic system is started, the engine controller determines the smoke limit value of the engine again according to the operation information of the engine and corrects the smoke limit value under the condition that the temperature value is less than or equal to a preset temperature, the engine controller obtains the operation information of the current engine under the condition that the temperature value is greater than the preset temperature, determines the current smoke limit value according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit value.

In the above technical solution, the resistance of the hydraulic system is related to the temperature of the hydraulic oil, and when the temperature of the hydraulic oil rises to a certain temperature, the resistance of the hydraulic system is significantly reduced, so that the engine controller obtains the temperature value of the hydraulic oil of the hydraulic system, and determines when to stop correcting the smoke limit value according to the temperature value of the hydraulic oil, thereby reducing the loss of the engine controller, where the preset temperature may be a temperature value set by a user, exemplarily, the preset temperature of the hydraulic oil is set to 35 ℃, and when the temperature value of the hydraulic oil is greater than 35 ℃, the engine controller obtains the current operation information of the engine, determines the current smoke limit value according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit value.

In any of the above technical solutions, the correction method further includes: acquiring the duration of the smoke intensity limit value corrected after the hydraulic system is started; under the condition that the duration is less than or equal to the preset duration, determining the smoke limit of the engine again according to the running information of the engine; acquiring current operation information of the engine under the condition that the duration is longer than a preset duration; and determining a current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In the technical scheme, the engine controller obtains the duration of the corrected smoke limit value after the hydraulic system is started, determines the smoke limit value of the engine according to the operation information of the engine again and corrects the smoke limit value under the condition that the duration is less than or equal to the preset duration, obtains the operation information of the current engine under the condition that the duration is greater than the preset duration, determines the current smoke limit value according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit value.

In the technical scheme, the resistance of the hydraulic system is related to the temperature of hydraulic oil, when the temperature of the hydraulic oil rises to a certain temperature, the resistance of the hydraulic system can be obviously reduced, wherein after the engine provides power for the hydraulic system and continues for a period of time, the temperature of the hydraulic oil of the hydraulic system rises to a certain degree, the resistance of the hydraulic system can be obviously reduced, at the moment, the smoke limit value can not be corrected any more by the engine controller, through setting the preset time, after the smoke limit value is corrected by the engine controller for a certain time, under the condition that the obtained temperature value of the hydraulic oil still does not exceed the preset temperature, the correction of the smoke limit value is stopped, the condition that the judgment of the engine controller on the temperature of the hydraulic oil is inaccurate due to the fault of a sensor for measuring the temperature of the hydraulic oil is avoided, and the smoke limit value is continuously corrected by the engine controller.

In any of the above technical solutions, the preset duration may be set by a user, for example, the user sets the preset duration to 1800 seconds according to experience, that is, after the engine controller continuously corrects the smoke limit for 1800 seconds, the engine controller obtains the current operation information of the engine, determines the current smoke limit according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit.

In any of the above technical solutions, controlling the operation of the engine according to the current smoke limit specifically includes: determining the current fuel injection quantity of the engine according to the current smoke intensity limit value; and controlling the engine to inject oil according to the current oil injection quantity.

In the technical scheme, after the resistance of the hydraulic system is obviously reduced, the engine controller does not correct the smoke limit any more, at the moment, the engine controller determines the fuel injection quantity of the engine according to the smoke limit in the current state of the engine and controls the engine to inject fuel according to the current fuel injection quantity, so that the engine controller does not need to continuously correct the smoke limit, and the response speed of the engine controller for determining the fuel injection quantity is improved.

The second aspect of the invention provides a smoke limit correction device for engineering equipment, wherein the engineering equipment comprises a hydraulic system and an engine, and the correction device comprises: the first processing unit is used for determining the smoke limit value of the engine according to the running information of the engine under the condition that the hydraulic system works; the second processing unit is used for determining a revision value according to the operation information of the hydraulic system and the environment information of the engineering equipment; and the revising unit is used for revising the smoke intensity limit value according to the revised value.

In the technical scheme of the invention, an engine controller determines the working state of a hydraulic system, and determines to correct the smoke limit value of an engine when the hydraulic system is in the working state, specifically, a first processing unit determines the smoke limit value of the engine according to the running information of the engine, a second processing unit determines a revised value according to the running information of the hydraulic system and the environment information of engineering equipment, and the revised value corrects the smoke limit value according to the revised value.

In any of the above technical solutions, the hydraulic system can convert pressure kinetic energy of liquid into mechanical energy, and is composed of five parts, namely a power element, an execution element, a control element, an auxiliary element and hydraulic oil, and includes two types, namely a hydraulic transmission system and a hydraulic control system, wherein the hydraulic transmission system mainly functions to transmit power and motion, and the hydraulic control system enables the output of the hydraulic system to meet specific performance requirements and can provide power for machines working on turntables, supports, mechanical arms and the like on engineering equipment.

In any of the above technical solutions, the engine controller may determine whether the hydraulic system is in a working state according to information sent by the upper controller, where the engine controller is used to monitor and control the engine, and the upper controller is used to monitor and control the hydraulic system. Illustratively, the engine controller receives a rotating speed control message of the upper controller, when the hydraulic system starts to work, the upper controller sends the rotating speed control message to the engine controller, and when the engine controller receives the rotating speed control message, it can be determined that the hydraulic system is in a working state at the moment, the hydraulic system needs the engine to provide power for the engine at the moment, and the engine controller corrects a smoke limit value of the engine, so that the engine controller can adjust the fuel injection quantity of the engine according to the corrected smoke limit value, and therefore the loading capacity of the engine is improved.

In any of the above technical solutions, the engine Controller and the upper-mounted Controller may be connected in communication by means of a CAN (Controller Area Network) bus.

According to the correction device of the smoke limit value provided by the invention, the following additional technical characteristics can be provided:

in any of the above technical solutions, the operation information of the hydraulic system includes a temperature value of hydraulic oil, the environment information includes altitude information, and the second processing unit is specifically configured to: acquiring a first corresponding relation between a temperature value, altitude information and a revised value of hydraulic oil; the revised value is determined based on the first correspondence, the temperature value of the hydraulic oil, and the altitude information.

In the above technical solution, the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the environment information includes altitude information, wherein the determining of the revised value according to the operation information of the hydraulic system and the environment information where the engineering equipment is located specifically includes that the engine control system obtains the temperature value of the hydraulic oil, a first corresponding relationship between the altitude information and the revised value, and determines the revised value according to the temperature value of the hydraulic oil and the altitude information based on the first corresponding relationship.

In the technical scheme, when the engineering equipment is in an environment with higher altitude and lower temperature, hydraulic oil in the hydraulic system is lower in temperature and higher in viscosity, so that the resistance of the hydraulic system is higher, the hydraulic system needs to output larger torque to provide power for the engine after being started, but the engine is limited by the smoke limit value at the moment, so that the fuel injection quantity of the engine is reduced, therefore, the first corresponding relation among the temperature value of the hydraulic oil, the altitude information and the revised value needs to be determined, so that the smoke limit value in the environment can be revised by the engine control system according to the revised value, and the condition that the rotating speed of the engine is unstable and is slowed down or flameout when the engineering equipment is at high altitude and the temperature of the hydraulic oil is lower is avoided.

In any of the above technical solutions, the altitude information may be indicated by atmospheric pressure information of an environment where the engineering equipment is located.

In any one of the above technical solutions, the operation information of the engine includes fuel injection amount information and rotation speed information, and the first processing unit is specifically configured to: acquiring a second corresponding relation between the fuel injection quantity information, the rotating speed information and the smoke intensity limit value; and determining the smoke limit value based on the second corresponding relation, the fuel injection quantity information and the rotating speed information.

In any of the above technical solutions, the first processing unit is further configured to: determining a first fuel injection quantity of the engine according to the smoke limit value; the engine is controlled to inject fuel at a first injection amount.

In the technical scheme, when the engine controller determines that the hydraulic system is in a non-working state, the smoke intensity limit value of the engine is determined according to the current fuel injection amount information and the rotating speed information (namely the running information of the engine) of the engine, the engine controller determines the second fuel injection amount of the engine according to the smoke intensity limit value at the moment, and controls the engine to inject fuel according to the second fuel injection amount, so that the engine control system can adjust the fuel injection amount according to the smoke intensity limit value and control the engine to inject fuel according to the most proper fuel injection amount, and the loading capacity of the engine is improved.

In any of the above technical solutions, the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the correction method further includes: acquiring a temperature value of hydraulic oil after a hydraulic system is started; determining the smoke limit value of the engine according to the operation information of the engine again under the condition that the temperature value is less than or equal to the preset temperature; acquiring current operation information of the engine under the condition that the temperature value is greater than a preset temperature; and determining a current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In any of the above technical solutions, the operation information of the hydraulic system includes a temperature value of hydraulic oil, the engine control system obtains the temperature value of the hydraulic oil after the hydraulic system is started, when the temperature value is less than or equal to a preset temperature, the engine controller determines a smoke limit of the engine again according to the operation information of the engine and corrects the smoke limit, when the temperature value is greater than the preset temperature, the engine controller obtains the operation information of the current engine, determines the current smoke limit according to the current operation information of the engine, and controls the operation of the engine according to the current smoke limit.

In the above technical solution, the resistance of the hydraulic system is related to the temperature of the hydraulic oil, and when the temperature of the hydraulic oil rises to a certain temperature, the resistance of the hydraulic system is obviously reduced, so that the engine controller obtains the temperature value of the hydraulic oil of the hydraulic system, and determines when to stop correcting the smoke limit value according to the temperature value of the hydraulic oil, thereby reducing the loss of the engine controller, wherein the preset temperature may be a temperature value set by a user, exemplarily, the preset temperature of the hydraulic oil is set to 35 ℃, when the temperature value of the hydraulic oil is greater than 35 ℃, the engine controller obtains the current operation information of the engine, determines the current smoke limit value according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit value.

In any of the above technical solutions, the correction method further includes: acquiring the duration of the smoke intensity limit value corrected after the hydraulic system is started; under the condition that the duration is less than or equal to the preset duration, determining the smoke limit value of the engine again according to the running information of the engine; acquiring current operation information of the engine under the condition that the duration is longer than a preset duration; and determining a current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In the technical scheme, the resistance of the hydraulic system is related to the temperature of hydraulic oil, when the temperature of the hydraulic oil rises to a certain temperature, the resistance of the hydraulic system can be obviously reduced, wherein after the engine provides power for the hydraulic system and continues for a period of time, the temperature of the hydraulic oil of the hydraulic system rises to a certain degree, the resistance of the hydraulic system can be obviously reduced, namely, the engine does not need to provide power for the hydraulic system, at the moment, the smoke limit value can not be corrected by the engine controller any more, the inaccuracy of the judgment of the temperature of the hydraulic oil by the engine controller due to the fault of a sensor for measuring the temperature of the hydraulic oil is avoided, the smoke limit value is continuously corrected by the engine controller, and further, the loss of the engine controller is reduced.

In any one of the above technical solutions, controlling the engine to operate according to the current smoke limit specifically includes: determining the current fuel injection quantity of the engine according to the current smoke limit value; and controlling the engine to inject oil according to the current oil injection quantity.

In the technical scheme, the engine is controlled to operate according to the current smoke limit value, specifically, the engine controller determines the current oil injection quantity of the engine according to the current smoke limit value and controls the engine to inject oil according to the current oil injection quantity, so that the engine control system can adjust the oil injection quantity according to the smoke limit value and control the engine to inject oil according to the most appropriate oil injection quantity, and the loading capacity of the engine is improved.

A third aspect of the present invention provides a smoke limit correction device, which includes a controller and a memory, wherein the memory stores a program or an instruction, and the controller implements the steps of the smoke limit correction method according to any one of the above technical solutions when executing the program or the instruction in the memory.

The smoke limit correction device provided by the invention comprises a controller and a memory, wherein a program or an instruction is stored in the memory, and the controller can realize the steps of the smoke limit correction method in any one technical scheme when executing the program or the instruction in the memory. Therefore, the smoke limit correction device provided by the present invention has all the beneficial effects of the smoke limit correction method in any of the above technical solutions, and details are not repeated herein.

A fourth aspect of the present invention provides a readable storage medium, on which a program or instructions are stored, and when the program or instructions are executed by a processor, the steps of the method for correcting the smoke limit value in any one of the above technical solutions are implemented.

The readable storage medium provided by the present invention stores thereon a program or instructions, and the program or instructions, when executed by the processor, can implement the steps of the method for correcting the smoke limit value according to any of the above technical solutions. Therefore, the readable storage medium provided by the present invention has all the beneficial effects of the method for correcting the smoke limit in any of the above technical solutions, and details are not repeated herein.

A fifth aspect of the present invention provides an engineering apparatus including: the smoke limit value correcting device in any technical scheme; and/or the readable storage medium in the above technical scheme.

In the technical scheme, the engineering equipment can be a heavy truck, a trailer, an excavator, an anchor driving machine, a bulldozer, a road roller, a concrete pump truck and other operation vehicles.

The engineering equipment provided by the invention comprises the smoke limit value correcting device in any technical scheme, so that the engineering equipment has all the beneficial effects of the smoke limit value correcting device in any technical scheme, and the details are not repeated herein.

In any of the above technical solutions, the engineering equipment provided by the present invention may further include the readable storage medium defined in the above technical solutions. Therefore, the electronic device provided by the present invention has all the advantages of the readable storage medium defined in the above technical solutions, and details are not described herein again.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows one of the flow diagrams of a method for correcting a smoke limit in an embodiment of the invention;

FIG. 2 is a second schematic flow chart of a method for correcting the smoke limit according to an embodiment of the present invention;

FIG. 3 is a third schematic flow chart illustrating a method for correcting the smoke limit according to an embodiment of the present invention;

FIG. 4 is a fourth flowchart illustrating a method for correcting the smoke limit according to an embodiment of the present invention;

FIG. 5 is a fifth flowchart illustrating a method for correcting the smoke limit according to an embodiment of the present invention;

FIG. 6 shows a sixth flowchart of a method for correcting the smoke limit according to an embodiment of the present invention;

FIG. 7 is a seventh schematic flow chart illustrating a method for correcting the smoke limit according to an embodiment of the present invention;

FIG. 8 shows a schematic block diagram of a smoke limit correction apparatus according to an embodiment of the present invention;

fig. 9 is a general flowchart of a method for correcting the smoke limit according to an embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

The execution main body of the technical scheme provided by the embodiment of the application can be a controller, and the main body can be determined according to actual use requirements, and the embodiment of the application is not limited. In order to more clearly describe the method for correcting the smoke limit provided in the embodiment of the present application, the execution subject of the method for correcting the smoke limit in the following method embodiment is exemplarily described as an engine controller.

Example one

As shown in fig. 1, an embodiment of the first aspect of the present invention provides a method for correcting a smoke limit value, where the method is used for an engineering device, where the engineering device includes a hydraulic system and an engine, and the method includes:

step 102: under the condition that a hydraulic system works, determining the smoke limit value of the engine according to the running information of the engine;

step 104: determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

step 106: and correcting the smoke limit value according to the revised value.

In the embodiment of the invention, the engine controller determines the working state of the hydraulic system, determines to correct the smoke limit value of the engine in the working state of the hydraulic system, specifically, determines the smoke limit value of the engine according to the running information of the engine, determines a revised value according to the running information of the hydraulic system and the environmental information of the engineering equipment, and corrects the smoke limit value according to the revised value.

In the above embodiment, when the hydraulic system operates at a low temperature, the viscosity of hydraulic oil in the hydraulic system is high, so that the resistance of the hydraulic system is high, and at this time, the engine is required to output a high torque to power the hydraulic system, so that when the hydraulic system is in a non-operating state, the engine does not provide power to the hydraulic system, and when the hydraulic system is in an operating state, the engine is required to provide power to the hydraulic system, and the magnitude of power which can be provided by the engine to the hydraulic system is limited by the fuel injection amount of the engine, when the fuel injection amount is reduced, the loading capacity of the engine is reduced, that is, the power provided by the hydraulic system is reduced, and the fuel injection amount smoke limit of the engine is limited by the smoke limit of the engine, and the engine controller corrects the smoke limit of the engine under the condition that the hydraulic system operates, so that the engine can output a high power, thereby improving the loading capacity of the engine, and solving the problem that the engine is prone to flameout under a low air pressure.

In any of the above embodiments, the hydraulic system can convert pressure kinetic energy of liquid into mechanical energy, and is composed of five parts, namely a power element, an execution element, a control element, an auxiliary element and hydraulic oil, and comprises two types, namely a hydraulic transmission system and a hydraulic control system, wherein the hydraulic transmission system mainly has the function of transmitting power and motion, and the hydraulic control system enables the output of the hydraulic system to meet specific performance requirements and can provide power for machines working on turntables, supports, mechanical arms and the like on engineering equipment.

In any of the above embodiments, the engine controller may determine whether the hydraulic system is in an operating state based on information sent by the on-board controller, wherein the engine controller is configured to monitor and control the engine, and the on-board controller is configured to monitor and control the hydraulic system. Illustratively, the engine controller receives a rotating speed control message of the upper controller, when the hydraulic system starts to work, the upper controller sends the rotating speed control message to the engine controller, and when the engine controller receives the rotating speed control message, it can be determined that the hydraulic system is in a working state at the moment, the hydraulic system needs the engine to provide power for the engine at the moment, and the engine controller corrects a smoke limit value of the engine, so that the engine controller can adjust the fuel injection quantity of the engine according to the corrected smoke limit value, and therefore the loading capacity of the engine is improved.

In any of the above embodiments, the engine Controller and the upper-mounted Controller may be communicatively connected by way of a CAN (Controller Area Network) bus.

In any of the above embodiments, the smoke limit is a value that the smoke value of the engine cannot reach, and the smoke value is a value of soot contained in gas discharged from fuel in the engine when the fuel is burned.

Example two

As shown in fig. 2, in any of the above embodiments, the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the correction method further includes:

step 202: under the condition that a hydraulic system works, determining the smoke limit value of the engine according to the running information of the engine;

step 204: determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

step 206: correcting the smoke limit value according to the revised value;

step 208: acquiring a temperature value of hydraulic oil after a hydraulic system is started;

step 210: under the condition that the temperature value is less than or equal to the preset temperature, the step of determining the smoke limit value of the engine according to the running information of the engine is executed again;

step 212: and under the condition that the temperature value is greater than the preset temperature, acquiring the current operation information of the engine, determining the current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In the above embodiment, the operation information of the hydraulic system includes a temperature value of hydraulic oil, the engine control system obtains the temperature value of the hydraulic oil after the hydraulic system is started, when the temperature value is less than or equal to a preset temperature, the engine controller determines a smoke limit of the engine according to the operation information of the engine again and corrects the smoke limit, when the temperature value is greater than the preset temperature, the engine controller obtains the operation information of the current engine, determines the current smoke limit according to the current operation information of the engine, and controls the operation of the engine according to the current smoke limit.

In the above embodiment, the resistance of the hydraulic system is related to the temperature of the hydraulic oil, and when the temperature of the hydraulic oil rises to a certain temperature, the resistance of the hydraulic system is obviously reduced, so that the engine controller obtains the temperature value of the hydraulic oil of the hydraulic system, determines when to stop correcting the smoke limit value according to the temperature value of the hydraulic oil, and reduces the loss of the engine controller, wherein the preset temperature may be a temperature value set by a user, exemplarily, the preset temperature of the hydraulic oil is set to 35 ℃, when the temperature value of the hydraulic oil is greater than 35 ℃, the engine controller obtains the current operation information of the engine, determines the current smoke limit value according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit value.

EXAMPLE III

As shown in fig. 3, in any of the above embodiments, the correction method further includes:

step 302: under the condition that a hydraulic system works, determining the smoke limit value of the engine according to the running information of the engine;

step 304: determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

step 306: correcting the smoke limit value according to the revised value;

step 308: acquiring the duration of the smoke intensity limit value corrected after the hydraulic system is automatically started;

step 310: under the condition that the duration is less than or equal to the preset duration, determining the smoke limit value of the engine again according to the running information of the engine;

step 312: and under the condition that the duration is longer than the preset duration, acquiring the current operation information of the engine, determining the current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In the above embodiment, the engine controller obtains the duration of the corrected smoke limit after the hydraulic system is started, and when the duration is less than or equal to the preset duration, the engine controller determines the smoke limit of the engine again according to the operation information of the engine and corrects the smoke limit, and when the duration is greater than the preset duration, the engine controller obtains the operation information of the current engine, determines the current smoke limit according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit.

In the above embodiment, the resistance of the hydraulic system is related to the temperature of the hydraulic oil, and when the temperature of the hydraulic oil rises to a certain temperature, the resistance of the hydraulic system is obviously reduced, wherein after the engine provides power for the hydraulic system and continues for a certain period of time, the temperature of the hydraulic oil of the hydraulic system rises to a certain extent, and the resistance of the hydraulic system is obviously reduced, at this time, the smoke limit value may not be corrected by the engine controller any more, and by setting the preset duration, after the smoke limit value is corrected by the engine controller for a certain duration, under the condition that the obtained temperature value of the hydraulic oil still does not exceed the preset temperature, the correction of the smoke limit value is stopped, thereby avoiding that the judgment of the engine controller on the temperature of the hydraulic oil is inaccurate due to the fault of a sensor for measuring the temperature of the hydraulic oil, and enabling the engine controller to continuously correct the smoke limit value.

In any of the above embodiments, the preset time period may be set by a user, for example, the user sets the preset time period to 1800 seconds according to experience, that is, after the engine controller continuously corrects the smoke limit value for 1800 seconds, the engine controller obtains the current operation information of the engine, determines the current smoke limit value according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit value.

In any of the above embodiments, controlling the operation of the engine according to the current smoke limit specifically includes: determining the current fuel injection quantity of the engine according to the current smoke intensity limit value; and controlling the engine to inject oil according to the current oil injection quantity.

In the embodiment, after the resistance of the hydraulic system is obviously reduced, the engine controller does not modify the smoke limit, and at the moment, the engine controller determines the fuel injection quantity of the engine according to the smoke limit in the current state of the engine and controls the engine to inject fuel according to the current fuel injection quantity, so that the engine controller does not need to continuously modify the smoke limit, and the response speed of determining the fuel injection quantity by the engine controller is improved.

Example four

As shown in fig. 4, in any of the above embodiments, the operation information of the hydraulic system includes a temperature value of hydraulic oil, the environment information includes altitude information, and the determining a revised value according to the operation information of the hydraulic system and the environment information where the engineering equipment is located specifically includes:

step 402: under the condition that a hydraulic system works, determining the smoke limit value of the engine according to the running information of the engine;

step 404: acquiring a first corresponding relation between a temperature value, altitude information and a revised value of hydraulic oil;

step 406: determining a revised value based on the first corresponding relationship, the temperature value of the hydraulic oil and the altitude information;

step 408: and correcting the smoke limit value according to the revised value.

In the above embodiment, the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the environment information includes altitude information, where determining the revised value according to the operation information of the hydraulic system and the environment information where the engineering equipment is located is specifically that the engine control system acquires a first corresponding relationship between the temperature value of the hydraulic oil, the altitude information, and the revised value, determines the revised value according to the temperature value of the hydraulic oil and the altitude information based on the first corresponding relationship, and determines the revised value directly through the corresponding relationship by presetting the corresponding relationship between the temperature value of the hydraulic oil, the altitude information, and the revised value, so as to simplify the process of determining the revised value.

In the embodiment, when the engineering equipment is in an environment with higher altitude and lower temperature, the temperature and the viscosity of hydraulic oil in the hydraulic system are lower, so that the resistance of the hydraulic system is higher, the hydraulic system needs to output higher torque to provide power for the engine after being started, but the engine is limited by the smoke limit value at the moment, so that the fuel injection quantity of the engine is reduced, and therefore the first corresponding relation among the temperature value, the altitude information and the revised value of the hydraulic oil needs to be determined, so that the smoke limit value in the environment can be revised by the engine control system according to the revised value, and the condition that the rotating speed of the engine is unstable or the engine stalls when the altitude is high and the temperature of the hydraulic oil is lower is avoided.

As shown in table 1 below, table 1 shows a first corresponding relationship between a temperature value of hydraulic oil, altitude information, and a revised value, wherein the altitude information is indicated using atmospheric pressure information in table 1.

TABLE 1

EXAMPLE five

As shown in fig. 5, in any of the above technical solutions, the operation information of the engine includes fuel injection amount information and rotation speed information, and the determining of the smoke limit of the engine according to the operation information of the engine specifically includes:

step 502: acquiring a second corresponding relation between the fuel injection quantity information, the rotating speed information and the smoke intensity limit value;

step 504: determining a smoke limit value based on the second corresponding relation, the fuel injection quantity information and the rotating speed information;

step 506: determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

step 508: and correcting the smoke limit value according to the revised value.

In the above embodiment, the operation information of the engine includes fuel injection amount information and rotation speed information, and the specific step of determining the smoke limit of the engine according to the operation information of the engine includes that the engine controller obtains a second corresponding relationship between the current fuel injection amount information of the engine, the rotation speed information, and the smoke limit, and determines the smoke limit according to the current fuel injection amount information of the engine and the rotation speed information based on the second corresponding relationship.

As shown in table 2 below, table 2 shows a second corresponding relationship between the fuel injection amount information, the rotation speed information, and the smoke limit value.

TABLE 2

EXAMPLE six

As shown in fig. 6, in any of the above embodiments, after the smoke limit is corrected according to the revised value, the correction method further includes:

step 602: under the condition that a hydraulic system works, determining the smoke intensity limit value of the engine according to the running information of the engine;

step 604: determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

step 606: correcting the smoke limit value according to the revised value;

step 608: determining a first fuel injection quantity of the engine according to the smoke limit value;

step 610: the engine is controlled to inject fuel at a first injection amount.

In the above embodiment, after the engine controller corrects the smoke limit according to the revised value, the engine controller determines the first fuel injection quantity of the engine according to the smoke limit, and controls the engine to inject fuel with the first fuel injection quantity, so that the engine control system can adjust the fuel injection quantity according to the smoke limit and control the engine to inject fuel with the most appropriate fuel injection quantity, thereby improving the loading capacity of the engine.

In the above embodiment, the smoke limit value is specifically revised based on the revised value.

The final smoke limit value = revised value + smoke limit value;

wherein, the final value of the smoke limit value is the smoke limit value after being revised according to the revised value.

And determining the first fuel injection quantity of the engine according to the smoke limit value.

The first fuel injection quantity = smoke limit value final value multiplied by 14.7;

wherein, the final value of the smoke limit value is the smoke limit value revised according to the revised value, and 14.7 is a constant.

EXAMPLE seven

As shown in fig. 7, in any of the above embodiments, the correction method further includes:

step 702: under the condition that the hydraulic system does not work, determining the smoke limit value of the engine according to the running information of the engine;

step 704: determining a second fuel injection quantity of the engine according to the smoke limit value;

step 706: and controlling the engine to inject the fuel with the second fuel injection quantity.

When the engine controller determines that the hydraulic system is in a non-working state, the smoke limit value of the engine is determined according to the current fuel injection amount information and the rotating speed information (namely the running information of the engine) of the engine, the engine controller determines the second fuel injection amount of the engine according to the smoke limit value at the moment and controls the engine to inject fuel by the second fuel injection amount, so that the engine control system can directly adjust the fuel injection amount according to the smoke limit value.

Example eight

As shown in fig. 9, in any of the above embodiments, the method for correcting the smoke limit specifically includes:

step 902: judging whether the hydraulic system works or not; yes to go to step 904, no to step 916;

step 904: judging whether the temperature value of hydraulic oil in the hydraulic system is greater than a preset temperature or whether the duration of the corrected smoke intensity limit value is greater than a preset duration or not; yes to go to step 916, no to step 906;

step 906: determining a smoke limit value of the engine according to the operation information of the engine;

step 908: determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

step 910: correcting the smoke intensity limit value according to the revised value;

step 912: determining a first fuel injection quantity of the engine according to the smoke intensity limit value;

step 914: controlling the engine to inject oil by a first oil injection quantity;

step 916: under the condition that the hydraulic system does not work, determining the smoke limit value of the engine according to the running information of the engine;

step 918: determining a second fuel injection quantity of the engine according to the smoke limit value;

step 920: and controlling the engine to inject the fuel with the second fuel injection quantity.

In the above embodiment, when the hydraulic system works at a low temperature, the viscosity of hydraulic oil in the hydraulic system is relatively high, so that the resistance of the hydraulic system is relatively high, and at this time, the engine is required to output relatively high torque to provide power for the hydraulic system. Therefore, the engine control system needs to judge the working state of the hydraulic system, when the hydraulic system is in a non-working state, the engine does not influence the hydraulic system at the moment, the second fuel injection quantity of the engine can be determined according to the smoke intensity limit value, and the engine is controlled to inject fuel according to the second fuel injection quantity; when the hydraulic system is in a working state, the engine needs to provide power for the hydraulic system, the power which can be provided for the hydraulic system by the engine is limited by the fuel injection quantity of the engine, when the fuel injection quantity is reduced, the loading capacity of the engine is deteriorated, namely the power provided for the hydraulic system is reduced, the fuel injection quantity of the engine is limited by a smoke limit value, the smoke limit value needs to be corrected by an engine control system, and the first fuel injection quantity of the engine is determined according to the corrected smoke limit value, so that the engine can output larger power, the loading capacity of the engine is improved, and the problem that the engine is prone to flameout under low air pressure is solved.

In any of the above embodiments, after the smoke limit is corrected for a period of time, it is further determined whether a temperature value of hydraulic oil in the hydraulic system is greater than a preset temperature, or whether a duration of the corrected smoke limit is greater than a preset duration, current operation information of the engine is obtained when the temperature value of the hydraulic oil is greater than the preset temperature, or the duration of the corrected smoke limit is greater than the preset duration, the current smoke limit is determined according to the current operation information of the engine, the engine is controlled to operate according to the current smoke limit, and the smoke limit is continuously corrected when the temperature value of the hydraulic oil is less than or equal to the preset temperature, or the duration of the corrected smoke limit is less than or equal to the preset duration.

Example nine

As shown in fig. 8, a second aspect of the present invention provides a smoke limit correction apparatus 800 for an engineering device, where the engineering device includes a hydraulic system and an engine, and the correction apparatus includes: the first processing unit 802 is used for determining the smoke limit value of the engine according to the running information of the engine under the condition that the hydraulic system works; the second processing unit 804 is used for determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment; and a revising unit 806 for revising the smoke limit value according to the revised value.

In the embodiment of the invention, the engine controller determines the working state of the hydraulic system, and determines to correct the smoke limit of the engine in the working state of the hydraulic system, specifically, the first processing unit determines the smoke limit of the engine according to the running information of the engine, the second processing unit determines a revised value according to the running information of the hydraulic system and the environmental information of the engineering equipment, and the revised unit corrects the smoke limit according to the revised value.

EXAMPLE ten

In any of the above embodiments, the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the correction method further includes: acquiring a temperature value of hydraulic oil after a hydraulic system is started; determining the smoke limit value of the engine according to the operation information of the engine again under the condition that the temperature value is less than or equal to the preset temperature; acquiring current operation information of the engine under the condition that the temperature value is greater than the preset temperature; and determining a current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In any of the above embodiments, the operation information of the hydraulic system includes a temperature value of hydraulic oil, the engine control system obtains the temperature value of the hydraulic oil after the hydraulic system is started, when the temperature value is less than or equal to a preset temperature, the engine controller determines a smoke limit of the engine again according to the operation information of the engine and corrects the smoke limit, when the temperature value is greater than the preset temperature, the engine controller obtains the current operation information of the engine, determines the current smoke limit according to the current operation information of the engine, and controls the engine to operate according to the current smoke limit.

In any of the above embodiments, the correction method further comprises: acquiring the duration of the smoke intensity limit value corrected after the hydraulic system is automatically started; under the condition that the duration is less than or equal to the preset duration, determining the smoke limit value of the engine again according to the running information of the engine; acquiring current operation information of the engine under the condition that the duration is longer than a preset duration; and determining a current smoke limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke limit value.

In any of the above embodiments, controlling the operation of the engine according to the current smoke limit specifically includes: determining the current fuel injection quantity of the engine according to the current smoke limit value; and controlling the engine to inject oil according to the current oil injection quantity.

In the technical scheme, after the resistance of the hydraulic system is obviously reduced, the engine controller does not correct the smoke limit value any more, at the moment, the engine controller determines the fuel injection quantity of the engine according to the smoke limit value of the engine in the current state and controls the engine to inject fuel at the current fuel injection quantity, so that the engine controller does not need to continuously correct the smoke limit value, and the response speed of the engine controller for determining the fuel injection quantity is improved.

EXAMPLE eleven

EXAMPLE twelve

In any of the above embodiments, the operation information of the engine includes fuel injection amount information and rotation speed information, and the smoke limit of the engine is determined according to the operation information of the engine, which specifically includes: acquiring a second corresponding relation between the fuel injection quantity information, the rotating speed information and the smoke intensity limit value; and determining the smoke limit value based on the second corresponding relation, the fuel injection quantity information and the rotating speed information.

In any of the above embodiments, in a case where the hydraulic system is not operating, the correction method further includes: determining a smoke limit value of the engine according to the operation information of the engine; determining a second fuel injection quantity of the engine according to the smoke limit value; and controlling the engine to inject the fuel with the second fuel injection quantity.

In the above embodiment, when the engine controller determines that the hydraulic system is not in operation, the smoke limit of the engine is determined according to the current fuel injection amount information and the rotation speed information (i.e. the operation information of the engine), and the engine controller determines the second fuel injection amount of the engine according to the smoke limit at this time and controls the engine to inject fuel with the second fuel injection amount, so that the engine control system can directly adjust the fuel injection amount according to the smoke limit.

EXAMPLE thirteen

A third embodiment of the present invention provides a smoke limit correction device, which includes a controller and a memory, where the memory stores a program or instructions, and the controller implements the steps of the smoke limit correction method in any one of the above embodiments when executing the program or instructions in the memory.

The smoke limit correction device provided by the invention comprises a controller and a memory, wherein the memory stores programs or instructions, and the controller can realize the steps of the smoke limit correction method in any technical scheme when executing the programs or instructions in the memory. Therefore, the smoke limit correction device provided by the present invention has all the beneficial effects of the smoke limit correction method in any of the above technical solutions, and details are not repeated herein.

Example fourteen

A fourth aspect of the present invention provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method for correcting a smoke limit value as in any one of the above embodiments.

The readable storage medium provided by the present invention stores thereon a program or instructions, and the program or instructions, when executed by the processor, can implement the steps of the method for correcting the smoke limit value according to any of the above technical solutions. Therefore, the readable storage medium provided by the present invention has all the beneficial effects of the method for correcting the smoke limit value in any of the above technical solutions, and details are not repeated herein.

Example fifteen

An embodiment of a fifth aspect of the present invention provides an engineering apparatus, including: the smoke limit value correcting device in any one of the above embodiments; and/or readable storage media as in the above embodiments.

The engineering equipment provided by the invention comprises the smoke limit value correcting device in any technical scheme, so that the engineering equipment has all the beneficial effects of the smoke limit value correcting device in any embodiment, and is not repeated herein.

The engineering equipment provided by the invention can also comprise the readable storage medium defined in the embodiment. Therefore, the engineering vehicle provided by the present invention has all the beneficial effects of the readable storage medium defined in the above embodiments, and will not be described herein again.

In the description of the present specification, the description of "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A smoke limit correction method is used for engineering equipment, the engineering equipment comprises a hydraulic system and an engine, and the correction method is characterized by comprising the following steps:

under the condition that the hydraulic system works, determining a smoke limit value of the engine according to the running information of the engine;

determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

and correcting the smoke limit value according to the revised value.

2. The method for correcting the smoke limit value according to claim 1, wherein the operation information of the hydraulic system includes a temperature value of hydraulic oil, the environment information includes altitude information, and the determining the revised value according to the operation information of the hydraulic system and the environment information of the engineering equipment includes:

acquiring a first corresponding relation between a temperature value, altitude information and a revised value of hydraulic oil;

determining the revised value based on the first correspondence, the temperature value of the hydraulic oil, and the altitude information.

3. The method for correcting the smoke limit value according to claim 1, wherein the operation information of the engine includes fuel injection amount information and rotation speed information, and the determining the smoke limit value of the engine according to the operation information of the engine specifically includes:

acquiring a second corresponding relation between the fuel injection quantity information, the rotating speed information and the smoke intensity limit value;

and determining the smoke limit value based on the second corresponding relation, the fuel injection quantity information and the rotating speed information.

4. The method of correcting a smoke limit of claim 1, wherein after correcting the smoke limit according to the revised value, the method further comprises:

determining a first fuel injection quantity of the engine according to the smoke limit value;

and controlling the engine to inject the fuel with the first fuel injection quantity.

5. The smoke limit correction method according to any one of claims 1 to 4, wherein in a case where the hydraulic system is not operated, the correction method further comprises:

determining a smoke limit of the engine according to the operation information of the engine;

determining a second fuel injection quantity of the engine according to the smoke limit value;

and controlling the engine to inject the fuel at the second fuel injection quantity.

6. The smoke limit correction method according to any one of claims 1 to 4, wherein the operation information of the hydraulic system includes a temperature value of hydraulic oil, and the correction method further includes:

acquiring a temperature value of the hydraulic oil after the hydraulic system is automatically started;

determining the smoke limit value of the engine according to the operation information of the engine again under the condition that the temperature value is less than or equal to the preset temperature;

and under the condition that the temperature value is greater than the preset temperature, acquiring the current operation information of the engine, determining the current smoke intensity limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke intensity limit value.

7. The method for correcting the smoke limit value according to any one of claims 1 to 4, further comprising:

acquiring the duration of the corrected smoke limit value after the hydraulic system is automatically started;

under the condition that the duration is less than or equal to the preset duration, determining the smoke limit value of the engine again according to the running information of the engine;

and under the condition that the duration is longer than the preset duration, acquiring current operation information of the engine, determining a current smoke intensity limit value according to the current operation information of the engine, and controlling the engine to operate according to the current smoke intensity limit value.

8. The method for correcting the smoke limit according to claim 7, wherein the controlling the engine to operate according to the current smoke limit specifically comprises:

determining the current fuel injection quantity of the engine according to the current smoke intensity limit value;

and controlling the engine to inject oil according to the current oil injection quantity.

9. A smoke limit correction device for engineering equipment, wherein the engineering equipment comprises a hydraulic system and an engine, and is characterized by comprising:

the first processing unit is used for determining the smoke limit value of the engine according to the running information of the engine under the condition that the hydraulic system works;

the second processing unit is used for determining a revision value according to the operation information of the hydraulic system and the environmental information of the engineering equipment;

and the revising unit is used for revising the smoke limit value according to the revised value.

10. A smoke limit correction device, comprising:

a controller and a memory, wherein the memory has a program or instructions stored therein, the controller implementing the steps of the method of modifying a smoke limit as claimed in any one of claims 1 to 8 when executing the program or instructions in the memory.

11. A readable storage medium on which a program or instructions are stored, characterized in that said program or instructions, when executed by a processor, implement the steps of the method of modification of the smoke limit as claimed in any one of claims 1 to 8.

12. An engineering apparatus, comprising:

the smoke limit correction device as defined in claim 9 or 10; and/or

The readable storage medium of claim 11.