CN111648860B - Radiator diagnosis system, diagnosis method and diagnosis device for engineering machinery - Google Patents
Radiator diagnosis system, diagnosis method and diagnosis device for engineering machinery Download PDFInfo
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- CN111648860B CN111648860B CN202010677519.9A CN202010677519A CN111648860B CN 111648860 B CN111648860 B CN 111648860B CN 202010677519 A CN202010677519 A CN 202010677519A CN 111648860 B CN111648860 B CN 111648860B
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- 238000010276 construction Methods 0.000 claims description 32
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
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- 238000010586 diagram Methods 0.000 description 9
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- 239000007788 liquid Substances 0.000 description 2
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- 230000002528 anti-freeze Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
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- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
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Abstract
The application provides a radiator diagnosis system, a radiator diagnosis method and a radiator diagnosis device of engineering machinery, and relates to the technical field of engineering machinery. The radiator diagnosis system comprises an engine, a radiator, a first temperature sensor, a second temperature sensor and an engine controller; an inlet of the engine is communicated with an upper water chamber of the radiator, and a water outlet of the engine is communicated with a lower water chamber of the radiator; the upper water chamber and the lower water chamber are respectively provided with a temperature sensor, so that the engine controller determines the temperature difference value of the upper water chamber and the lower water chamber based on the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber; the engine controller is also connected with a temperature sensor in the engine to judge whether the radiator is blocked or not based on the temperature difference value and the temperature signal value of the engine. The method and the device can realize automatic diagnosis of the blockage fault of the radiator in the engineering machinery, and improve the efficiency of fault diagnosis.
Description
Technical Field
The application relates to the technical field of engineering machinery, in particular to a radiator diagnosis system, a radiator diagnosis method and a radiator diagnosis device of engineering machinery.
Background
In order to ensure the working performance of an engine in engineering machinery, the engineering machinery is mostly provided with a radiator to radiate the engine.
The performance requirements of the water-cooled engine on the radiator are basically that the heat radiation performance is good, the core body or the outside cannot be blocked, once the core body or the outside is blocked, the water temperature of the engine is easily overhigh, and the performance of the engine is affected. The working condition of the engineering machinery is relatively worse, and the maintenance and use condition of a client is more complicated. Once the radiator is blocked, the water temperature of the engine is high and the fault is caused.
Most of the existing engineering machines cannot realize automatic diagnosis of radiators, for example, when the whole system of the engineering machine is checked, such as dismounting a thermostat, replacing antifreeze and the like, and even replacing an engine, a large amount of time is spent, and the efficiency of fault diagnosis is low.
Disclosure of Invention
An object of the present invention is to provide a radiator diagnosis system, a radiator diagnosis method, and a radiator diagnosis device for an engineering machine, which are used to automatically diagnose a blockage fault of a radiator in the engineering machine and improve the efficiency of fault diagnosis.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a radiator diagnostic system for a construction machine, including: the radiator diagnostic system includes: the system comprises an engine, a radiator, a first temperature sensor, a second temperature sensor and an engine controller; an inlet of the engine is communicated with an upper water chamber of the radiator through an upper water pipe, and a water outlet of the engine is communicated with a lower water chamber of the radiator through a lower water pipe; the first temperature sensor is arranged in the upper water chamber, and the second temperature sensor is arranged in the lower water chamber;
the first temperature sensor and the second temperature sensor are respectively connected with the engine controller to respectively transmit the acquired temperature signal value of the upper water chamber and the acquired temperature signal value of the lower water chamber to the engine controller, so that the engine controller determines the temperature difference value of the upper water chamber and the lower water chamber based on the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber;
the engine controller is further connected with a third temperature sensor in the engine to acquire a temperature signal value of the engine acquired by the third temperature sensor, and whether the radiator is blocked is judged based on the temperature difference value and the temperature signal value of the engine.
Optionally, the radiator diagnostic system further includes: and the display screen is connected with the engine controller.
In a second aspect, an embodiment of the present application further provides a radiator diagnosis method for a construction machine, where the radiator diagnosis method is applied to an engine controller in the radiator diagnosis system according to the first aspect, and the method includes:
acquiring a temperature signal value of the upper water chamber acquired by the first temperature sensor, a temperature signal value of the lower water chamber acquired by the second temperature sensor and a temperature signal value of the engine acquired by the third temperature sensor;
according to the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber, the temperature difference value of the upper water chamber and the lower water chamber is determined;
and judging whether the radiator is blocked or not according to the temperature difference value and the temperature signal value of the engine.
Optionally, the determining whether the radiator is blocked according to the temperature difference and the temperature signal value of the engine includes:
if the temperature difference is larger than or equal to a preset temperature difference, determining the water temperature of the engine according to the temperature signal value of the engine;
and judging whether the radiator is blocked or not according to the rotating speed of the engine and the water temperature of the engine.
Optionally, the determining whether the radiator is blocked according to the rotation speed of the engine and the water temperature of the engine includes:
if the rotating speed of the engine is greater than or equal to a preset rotating speed, judging whether the water temperature of the engine exceeds a preset maximum opening temperature;
if the water temperature of the engine exceeds the maximum opening temperature, determining the duration of the water temperature of the engine exceeding the maximum opening temperature;
and judging whether the radiator is blocked or not according to the duration.
Optionally, the determining whether the radiator is blocked according to the duration includes:
and if the duration time exceeds the preset time, determining that the radiator is blocked.
Optionally, the method further includes:
and if the radiator is blocked, sending the fault code of the blocked radiator to the display screen, so that the display screen displays the fault code.
Optionally, the method further includes:
if the radiator is blocked, fault alarm information is sent to the display screen, so that the display screen displays the fault alarm information.
Optionally, before determining the water temperature of the engine according to the temperature signal value of the engine if the temperature difference is greater than or equal to a preset temperature difference, the method further includes:
when the ambient temperature is greater than or equal to a preset temperature and the radiator is subjected to sealing treatment, controlling the engine to perform pressure build-up action at different rotating speeds until the water temperature of the engine exceeds the maximum opening temperature;
acquiring a calibration temperature signal value of the upper water chamber and a calibration temperature signal value of the lower water chamber under the condition of keeping the preset duration;
determining a calibration temperature difference value of the upper water chamber and the lower water chamber according to the calibration temperature signal value of the upper water chamber and the calibration temperature signal value of the lower water chamber;
and determining the preset temperature difference value according to the calibration temperature difference value.
In a third aspect, an embodiment of the present application further provides a radiator diagnosis device for a construction machine, where the radiator diagnosis device is applied to an engine controller in the radiator diagnosis system according to the first aspect, and the radiator diagnosis device includes:
the acquisition module is used for acquiring the temperature signal value of the upper water chamber acquired by the first temperature sensor, the temperature signal value of the lower water chamber acquired by the second temperature sensor and the temperature signal value of the engine acquired by the third temperature sensor;
the determining module is used for determining the temperature difference value of the upper water chamber and the lower water chamber according to the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber;
and the judging module is used for judging whether the radiator is blocked or not according to the temperature difference value and the temperature signal value of the engine.
The beneficial effect of this application is:
in the radiator diagnosis system, the radiator diagnosis method, and the radiator diagnosis device for an engineering machine provided by the present application, the radiator diagnosis system may include: the system comprises an engine, a radiator, a first temperature sensor, a second temperature sensor and an engine controller; an inlet of the engine is communicated with an upper water chamber of the radiator through an upper water pipe, and a water outlet of the engine is communicated with a lower water chamber of the radiator through a lower water pipe; a first temperature sensor is arranged in the upper water chamber, and a second temperature sensor is arranged in the lower water chamber; the first temperature sensor and the second temperature sensor are respectively connected with an engine controller so as to respectively transmit the acquired temperature signal value of the upper water chamber and the acquired temperature signal value of the lower water chamber to the engine controller, so that the engine controller determines the temperature difference value of the upper water chamber and the lower water chamber based on the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber; the engine controller is also connected with a third temperature sensor in the engine to acquire a temperature signal value of the engine acquired by the third temperature sensor, and whether the radiator is blocked is judged based on the temperature difference value and the temperature signal value of the engine. According to the scheme, the temperature sensors are respectively arranged in the upper water chamber and the lower water chamber of the radiator to respectively collect temperature signal values of the upper water chamber and the lower water chamber, the temperature difference value is determined by the transmitter controller based on the temperature signal values of the upper water chamber and the lower water chamber, whether the radiator is blocked is judged based on the temperature difference value and the temperature signal value of the engine, automatic diagnosis of the blockage fault of the radiator is achieved, troubleshooting is not needed for disassembling and assembling the whole engineering machine, the troubleshooting time is effectively saved, and the troubleshooting efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a radiator diagnostic system of a construction machine according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a radiator diagnostic system of another construction machine according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a construction machine according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a radiator diagnosis method for a construction machine according to an embodiment of the present disclosure;
FIG. 5 is a flowchart illustrating a radiator diagnostic method for a work machine according to an embodiment of the present disclosure;
fig. 6 is a flowchart of a radiator diagnosis method for a construction machine according to an embodiment of the present disclosure;
fig. 7 is a flowchart of a radiator diagnosis method for a construction machine according to an embodiment of the present disclosure;
fig. 8 is a flowchart illustrating a method for calibrating a preset temperature difference in a radiator diagnosis method for an engineering machine according to an embodiment of the present disclosure;
fig. 9 is a schematic view of a radiator diagnosis device of a construction machine according to an embodiment of the present disclosure;
fig. 10 is a schematic diagram of an engine controller according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.
The solutions provided in the present application can be applied to any construction machine using a water-cooled engine, such as an excavator, a backhoe loader, a wheel excavator, and the like, but can also be applied to other types of construction machines. Water-cooled engines, also known as water-cooled engines, are engines that use water as a cooling medium.
For water-cooled engines, it is important that the radiator is blocked. The radiator diagnosis system provided by each embodiment aims at automatically diagnosing the blockage of the radiator, does not need to carry out troubleshooting on the disassembly and assembly of the whole engineering machine, effectively saves troubleshooting time and improves the fault diagnosis efficiency.
The radiator diagnosis system of a construction machine according to the embodiments of the present application is described below by way of examples with reference to the accompanying drawings. Fig. 1 is a schematic structural diagram of a radiator diagnostic system of a construction machine according to an embodiment of the present disclosure. As shown in fig. 1, the radiator diagnostic system 10 of the construction machine includes: an engine 11, a radiator 12, a first temperature sensor 13, a second temperature sensor 14, and an engine controller 15. An inlet of the engine 11 is communicated with an upper water chamber 121 of the radiator 12 through an upper water pipe 16, and an outlet of the engine 11 is communicated with a lower water chamber 122 of the radiator 12 through a lower water pipe 17. The upper water chamber 121 is provided with a first temperature sensor 13 therein, and the lower water chamber 122 is provided with a second temperature sensor 14 therein.
The first and second temperature sensors 13 and 14 are respectively connected to the engine controller 15 to respectively transmit the collected temperature signal values of the upper and lower water chambers 121 and 122 to the engine controller 15, so that the engine controller 15 determines a temperature difference value of the upper and lower water chambers 121 and 122 based on the temperature signal values of the upper and lower water chambers 121 and 122.
The engine controller 15 is also connected to a third temperature sensor in the engine 11 to acquire a temperature signal value of the engine 11 collected by the third temperature sensor, and determine whether the radiator 12 is clogged based on the temperature difference value and the temperature signal value of the engine 11.
Specifically, the engine 11 may be a water-cooled engine, and for the water-cooled engine, there are a water inlet and a water outlet, and since the water inlet is communicated with the upper water chamber 121 of the radiator 12 through the upper water pipe 16, the water at the first temperature in the upper water chamber 121 enters the engine 11 through the upper water pipe 16, and the engine 11 is cooled by the water at the first temperature. The water outlet is also communicated with the lower water chamber 122 of the radiator 12 through the lower water pipe 17, so that the cooled water with the second temperature is transmitted to the lower water chamber 122 of the radiator 12 through the lower water pipe 17. The water temperature in the upper chamber 121 may be lower than the water temperature in the lower chamber 122.
The first temperature sensor 13 disposed in the upper water chamber 121 may be configured to collect a temperature signal value of the upper water chamber 121, and based on the temperature signal value of the upper water chamber 121, a water temperature of the upper water chamber 121 may be determined. The second temperature sensor 14 disposed in the lower chamber 122 is used to collect the temperature signal value of the lower chamber 122, and based on the temperature signal value of the lower chamber 122, the water temperature of the lower chamber 122 can be determined.
In a possible implementation, the first temperature sensor 13 is disposed at an intermediate position within the upper chamber 121, and the second temperature sensor 14 is disposed at an intermediate position within the lower chamber 122. Of course, the temperature sensor 13 and the second temperature sensor 14 may be disposed at other preset positions of the water chamber, and are respectively disposed at the middle positions in the upper water chamber 121 and the lower water chamber 122, so that the detected temperature signal value is more accurate, and accurate diagnosis of blockage of the radiator is facilitated.
It is to be noted that the first temperature sensor 13 and the second temperature sensor 14 mentioned in the present application refer to a set of temperature sensors disposed in the upper water chamber 121 and the lower water chamber 122, respectively, and in a possible implementation, the first temperature sensor 13 and the second temperature sensor 14 may include at least one temperature sensor, respectively.
If the first temperature sensor 13 includes a plurality of temperature sensors, the respective temperatures may be determined based on the temperature signal values of the plurality of temperature sensors, and the water temperature of the upper water chamber 121 may be calculated based on an average value of the temperatures of the plurality of temperature sensors or other algorithms.
If the second temperature sensor 14 includes a plurality of temperature sensors, the temperatures of the respective temperature sensors may be determined based on the temperature signal values of the plurality of temperature sensors, and the water temperature of the lower water chamber 122 may be calculated based on an average value of the temperatures of the plurality of temperature sensors or other algorithms.
It should be noted that, after the first temperature sensor 13 and the second temperature sensor 14 collect the temperature signal values, the collected temperature signal values of the upper water chamber 121 and the lower water chamber 122 can be respectively transmitted to the engine controller 15, and the engine controller 15 determines the temperature difference between the upper water chamber 121 and the lower water chamber 122 based on the temperature signal values of the upper water chamber 121 and the lower water chamber 122.
A third temperature sensor may be provided in the engine 11 at a predetermined position in a cooling water tank of the engine 11. The temperature signal value collected by the third temperature sensor is the temperature signal value of the cooling water tank in the engine 11. When the temperature signal value of the engine 11 is acquired, the engine controller 15 may calculate the water temperature of the engine 11 based on the temperature signal value of the engine 11, and determine whether the radiator 12 is clogged by combining the temperature difference between the upper water chamber 121 and the lower water chamber. The third temperature sensor may be a water temperature sensor of the engine 11, or a water temperature sensor additionally arranged in the engine 11.
The radiator diagnostic system of the engineering machine provided by the embodiment of the application can comprise: the system comprises an engine, a radiator, a first temperature sensor, a second temperature sensor and an engine controller; an inlet of the engine is communicated with an upper water chamber of the radiator through an upper water pipe, and a water outlet of the engine is communicated with a lower water chamber of the radiator through a lower water pipe; a first temperature sensor is arranged in the upper water chamber, and a second temperature sensor is arranged in the lower water chamber; the first temperature sensor and the second temperature sensor are respectively connected with an engine controller so as to respectively transmit the acquired temperature signal value of the upper water chamber and the acquired temperature signal value of the lower water chamber to the engine controller, so that the engine controller determines the temperature difference value of the upper water chamber and the lower water chamber based on the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber; the engine controller is also connected with a third temperature sensor in the engine to acquire a temperature signal value of the engine acquired by the third temperature sensor, and whether the radiator is blocked is judged based on the temperature difference value and the temperature signal value of the engine. According to the embodiment, the temperature sensors are respectively arranged in the upper water chamber and the lower water chamber of the radiator to respectively collect the temperature signal values of the upper water chamber and the lower water chamber, the temperature difference value is determined by the transmitter controller based on the temperature signal values of the upper water chamber and the lower water chamber, whether the radiator is blocked is judged based on the temperature difference value and the temperature signal value of the engine, the automatic diagnosis of the blockage fault of the radiator is realized, the whole engineering machine does not need to be dismounted for fault troubleshooting, the fault troubleshooting time is effectively saved, and the fault diagnosis efficiency is improved.
In addition, in the embodiment, the fault diagnosis is carried out by adopting the temperature signal values of the engine controller, so that the blockage fault diagnosis is carried out without adding an additional controller, and the complexity of a radiator diagnosis system is reduced.
On the basis of the radiator diagnosis system shown in fig. 1, the embodiment of the present application also provides a possible implementation manner. Fig. 2 is a schematic structural diagram of another radiator diagnostic system of a construction machine according to an embodiment of the present disclosure. As shown in fig. 2, the radiator diagnostic system 10 of the construction machine may further include: and the display screen 18, wherein the display screen 18 is connected with the engine controller 15.
The display screen 18 may be a central control display screen of the engineering machine, or an external display screen connected to the engine controller 15, or may be another type of display screen connected to the engine controller 15, which is not limited in the embodiment of the present application.
The transmitter controller 15 may transmit the result of the diagnosis of whether the radiator 12 is clogged to the display screen 18 for display. For example, in one possible example, if the engine controller 15 determines that the radiator 12 is clogged, it may determine a fault code corresponding to the clogging and send the fault code to the display 18 for display to prompt the user. Therefore, a user can accurately determine the fault type to be that the radiator is blocked, maintenance personnel can conveniently and accurately check the fault, the repair quality of the engine is improved, and the normal work of the engine is ensured.
In another possible example, if the engine controller 15 determines that the radiator is clogged, the display screen 18 may first display a failure warning message, so that the display screen 18 displays the failure warning message. The display of the fault alarm information through the display screen 18 can enable a user to find that the radiator is blocked in time.
In other possible examples, the radiator diagnostic system 10 described above may further include: the alarm is connected with the engine controller 15, fault alarm information can be sent to the alarm, and the alarm prompts the user to find that the radiator is blocked in time. The alarm may be, for example, a buzzer, which is controlled to sound to indicate that the radiator is clogged.
On the basis of the radiator diagnosis system shown in fig. 1 or fig. 2, the embodiment of the application can also provide a working machine. Fig. 3 is a schematic structural diagram of a construction machine according to an embodiment of the present application. As shown in fig. 3, the work machine 30 may include: the radiator diagnostic system 10 for a construction machine according to any one of the above aspects.
Of course, the work machine 30 may further include other circuit structures and mechanical structures, which at least ensure an execution main body and the like that execute the corresponding functions of the work machine 30, and the present application is not limited thereto.
The engineering machinery provided by the embodiment of the application can comprise any radiator diagnosis system, can realize automatic diagnosis of radiator blockage in the engineering machinery, does not need to carry out troubleshooting on the disassembly and assembly of the whole engineering machinery, effectively saves troubleshooting time and improves the fault diagnosis efficiency.
On the basis of the radiator diagnosis system and the engineering machine provided by the application, the embodiment of the application can also provide a radiator diagnosis method executed by an engine controller in the radiator diagnosis system, which is explained in the following with reference to the accompanying drawings. Fig. 4 is a flowchart of a radiator diagnosis method for a construction machine according to an embodiment of the present disclosure. As shown in fig. 4, the power-off control method may include the following:
s401, acquiring a temperature signal value of the upper water chamber acquired by the first temperature sensor, a temperature signal value of the lower water chamber acquired by the second temperature sensor and a temperature signal value of the engine acquired by the third temperature sensor.
In one possible implementation, the engine controller may acquire the temperature signal value of the upper water chamber from the first temperature sensor, the temperature signal value of the lower water chamber from the second temperature sensor, and the temperature signal value of the engine from the third temperature sensor based on a preset period.
In another possible implementation manner, when the first temperature sensor, the second temperature sensor and the third temperature sensor acquire the temperature signal value, the acquired temperature signal value is transmitted to the engine controller.
S402, determining the temperature difference value of the upper water chamber and the lower water chamber according to the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber.
The engine controller may determine a water temperature of the upper water chamber based on the temperature signal value of the upper water chamber, determine a water temperature of the lower water chamber based on the temperature signal value of the lower water chamber, and determine a temperature difference between the upper water chamber and the lower water chamber based on the water temperatures of the upper water chamber and the lower water chamber. The temperature difference may be a difference between a high temperature and a low temperature in the water temperature of the upper water chamber and the water temperature of the lower water chamber, and the temperature difference is greater than 0.
And S403, judging whether the radiator is blocked or not according to the temperature difference value and the temperature signal value of the engine.
The engine controller can determine the water temperature of the engine according to the temperature signal value of the engine, and judge whether the radiator has a fault according to the temperature difference value and the temperature signal value of the engine.
The temperature difference value can be used for representing the water temperature conditions of an upper water chamber and a lower water chamber in the radiator, the temperature signal value of the engine can be used for representing the water temperature conditions in a cooling water tank of the engine, and the fault diagnosis of the radiator is carried out based on the temperature difference value and the temperature signal value of the engine, so that the influence of the blockage of the radiator on the water temperature of the upper water chamber and the lower water chamber is considered, and the water temperature condition of the radiator on the water temperature of the engine is also considered, and therefore whether the radiator is blocked or not can be accurately judged based on the temperature difference value and the temperature signal value of the engine.
The radiator diagnosis system of the engineering machinery, provided by the embodiment of the application, can enable the engine controller to judge whether the radiator is blocked or not according to the temperature difference value of the upper chamber and the lower chamber in the radiator and the temperature signal value of the engine, so that the radiator blocking fault diagnosis result is more accurate.
The embodiment of the present application further provides a possible implementation manner of the method shown in fig. 4, which is described as follows by way of example with reference to the accompanying drawings. Fig. 5 is a flowchart of another radiator diagnosis method for a construction machine according to an embodiment of the present disclosure. As shown in fig. 5, the determining whether the radiator is clogged according to the temperature difference value and the temperature signal value of the engine in S403 in the above method may include:
s501, if the temperature difference is larger than or equal to a preset temperature difference, determining the water temperature of the engine according to the temperature signal value of the engine.
The engine controller, upon obtaining the temperature difference, may compare the temperature difference to a preset temperature difference. The preset temperature difference value can be stored in advance in a calibration stage and set in a diagnostic program in the engine controller, and the radiator diagnosis method provided by the embodiment of the application can be executed by executing the diagnostic program.
If the temperature difference is larger than or equal to the preset temperature difference, S501-S502 are executed to continue the jam fault diagnosis.
If the temperature difference is smaller than the preset temperature difference, the radiator can be determined not to be blocked.
And S502, judging whether the radiator is blocked or not according to the rotating speed of the engine and the water temperature of the engine.
The engine controller is a controller that controls the engine, and the engine controller knows the speed of the engine. The engine speed may be an engine speed at a time corresponding to the temperature difference.
When the temperature difference is larger than or equal to the preset temperature difference, whether the blockage occurs can not be directly determined, whether the radiator fails or not needs to be continuously judged according to the information of the engine such as the rotating speed of the engine, the water temperature of the engine and the like, and the diagnosis result of the blockage failure of the radiator can be ensured.
It should be noted that the specific implementation of S403 in the above method may not be limited to the implementation shown in fig. 5, and may also be implemented in other implementations, for example, by referring to a preset corresponding relationship table to determine whether the radiator fails according to the temperature difference and the temperature signal value of the engine. The above-described fig. 5 is only a possible example and the present application is not limited to this.
The embodiment of the present application further provides a possible implementation manner of the method shown in fig. 5, which is described as follows by way of example with reference to the accompanying drawings. Fig. 6 is a flowchart of a radiator diagnosis method for a construction machine according to another embodiment of the present disclosure. As shown in fig. 6, the step S502 of determining whether the radiator is clogged according to the rotation speed of the engine and the water temperature of the engine in the above method may include:
s601, if the rotating speed of the engine is greater than or equal to a preset rotating speed, judging whether the water temperature of the engine exceeds a preset maximum opening temperature.
The engine controller may determine whether a rotational speed of the engine is greater than or equal to a preset rotational speed. The preset rotation speed may be, for example, 1000RPM, but may also be other rotation speed values, which is not limited in the present application.
And if the rotating speed of the engine is greater than or equal to the preset rotating speed, S601-S603 are executed to continue the blockage fault diagnosis.
If the rotating speed of the engine is lower than the preset rotating speed, it can be determined that the radiator is not blocked, and the temperature difference between the upper water chamber and the lower water chamber of the radiator caused by other reasons is large.
S602, if the water temperature of the engine exceeds the maximum opening temperature, determining the duration of the water temperature of the engine exceeding the maximum opening temperature.
The maximum opening temperature may be a maximum opening temperature of a thermostat of a water outlet of the engine, i.e., a maximum temperature adjustable by the thermostat. The maximum opening temperature may be, for example, 95 ℃, but may be other temperature values, and the maximum opening temperature is determined by the thermostat.
If the water temperature of the engine does not exceed the maximum opening temperature, it may be determined that the radiator is not blocked, possibly due to the water temperature of the engine being affected by the thermostat, rather than the radiator being blocked.
If the water temperature of the engine exceeds the maximum opening temperature, S602-S603 are continuously executed to continue the clogging fault diagnosis in combination with the duration of exceeding the maximum opening temperature.
And S603, judging whether the radiator is blocked or not according to the duration.
After the duration is determined, the duration and the preset duration can be compared, and whether the radiator fails or not is judged according to the comparison result.
For example, as described above, the step of determining whether the radiator is clogged according to the duration includes:
and if the duration time exceeds the preset time, determining that the radiator is blocked.
Otherwise, if the duration time does not exceed the preset time, the radiator is determined not to be blocked.
The preset time period may be, for example, 5min, and of course, other time period values may also be set specifically according to actual conditions.
According to the scheme provided by the application, when the temperature difference value is larger than or equal to the preset temperature difference value and the rotating speed of the engine is larger than or equal to the preset rotating speed, the duration of the radiator is further judged by continuously combining the water temperature of the engine and the duration of the water temperature of the engine exceeding the maximum opening temperature, so that the blockage fault diagnosis of the radiator is more accurate and reliable.
On the basis of any one of the radiator diagnosis methods described above, the embodiments of the present application may further provide an implementation example of a radiator diagnosis method, so as to implement prompt and early warning of a blockage fault and the like in a case of implementing radiator blockage fault diagnosis. Fig. 7 is a flowchart of a radiator diagnosis method for a construction machine according to another embodiment of the present disclosure. As shown in fig. 7, optionally, the method may further include:
and S701, if the radiator is blocked, sending the fault code of the blocked radiator to the display screen, so that the display screen displays the fault code.
Through displaying the fault code of the fault, the user can accurately determine the fault type to be the radiator blockage, so that the maintenance personnel can conveniently and accurately check the fault, the repair quality of the engine is improved, and the normal work of the engine is ensured.
Optionally, once the heat sink is clogged, the method may further include:
s702, if the radiator is blocked, sending fault alarm information to the display screen, and enabling the display screen to display the fault alarm information.
In a possible example, the failure warning information may be displayed on a display screen by a warning icon of a preset color, and a blinking prompt may be lit for the warning icon. For example, the alarm icon of a preset color may be, for example, a red alarm image display SD to indicate that the radiator is clogged.
The display of the fault alarm information through the display screen 18 can enable a user to find that the radiator is blocked in time.
It should be noted that, in the above method, S701 and S702 may only execute one step, may execute sequentially, or may execute in sequence, and fig. 7 is only one possible example, which is not limited in this embodiment of the present application.
On the basis of the diagnosis method of the radiators, the embodiment of the application can also provide a calibration implementation method of the preset temperature difference applied by the method. Fig. 8 is a flowchart of a method for calibrating a preset temperature difference in a radiator diagnosis method of a construction machine according to an embodiment of the present disclosure. As shown in fig. 8, optionally, before determining the water temperature of the engine according to the temperature signal value of the engine if the temperature difference is greater than or equal to the preset temperature difference in step S501 of the method, the method may further include:
s801, controlling the engine to perform pressure holding action at different rotating speeds under the condition that the ambient temperature is greater than or equal to a preset temperature and the radiator is subjected to sealing treatment until the water temperature of the engine exceeds the maximum opening temperature.
Before the preset temperature difference value calibration is executed, the engineering machinery can be debugged normally, and the liquid level of the frozen liquid in the engineering machinery is within a preset range. The preset temperature may be, for example, 40 ℃. The heat sink is sealed, and the air inlet of the heat sink can be sealed.
For example, the engine may be controlled to operate the engineering machine at a preset maximum rotation speed and a preset common rotation speed to perform a pressure holding operation until the water temperature of the engine exceeds the maximum opening temperature, such as 95 ℃, under the conditions that the ambient temperature is less than or equal to 40 ℃ and the air inlet of the radiator is sealed.
S802, collecting the calibrated temperature signal value of the upper water chamber and the calibrated temperature signal value of the lower water chamber under the condition of keeping the preset duration.
The preset time period may be, for example, 5 min. In the case of the pressure-building operation, the duration that the water temperature of the engine exceeds the maximum opening temperature needs to be kept for a preset time, or the deviation from the preset time is kept within a preset range. In this case, the calibrated temperature signal value of the upper water chamber and the calibrated temperature signal value of the lower water chamber may be collected.
And S803, determining the calibration temperature difference value of the upper water chamber and the lower water chamber according to the calibration temperature signal value of the upper water chamber and the calibration temperature signal value of the lower water chamber.
If the calibration temperature signal values of the upper water chamber and the lower water chamber at a plurality of time points are acquired, the calibration temperature difference values of the upper water chamber and the lower water chamber can be obtained, and the average calibration temperature difference value A ℃ is obtained as the final calibration temperature difference value.
S804, determining the preset temperature difference value according to the calibration temperature difference value.
In a possible implementation, the calibrated temperature difference a ℃ may be directly determined as the preset temperature difference, or the preset temperature difference may be determined according to the calibrated temperature difference a ℃ and a preset deviation threshold. The predetermined temperature difference may be determined, for example, based on the sum of the calibrated temperature difference a deg.c and a predetermined deviation threshold, such as 5 deg.c.
On the basis of providing the radiator diagnosis system and the diagnosis method, the embodiment of the application can also provide a calibration method of the preset temperature difference value adopted by the diagnosis method, so that the preset temperature difference value adopted by the diagnosis method is more accurate, the result of the radiator blockage fault diagnosis is more accurate, the service performance of an engine of the engineering machinery is effectively ensured, and the service life of the engine is ensured.
The following describes a device, equipment, and a storage medium for executing the radiator diagnosis method for an engineering machine provided by the present application, and specific implementation processes and technical effects thereof are referred to above, and will not be described again below.
Fig. 9 is a schematic diagram of a radiator diagnostic apparatus for a construction machine according to an embodiment of the present disclosure, and as shown in fig. 9, the radiator diagnostic apparatus 900 for a construction machine may include:
an obtaining module 901, configured to obtain a temperature signal value of the upper water chamber collected by the first temperature sensor, a temperature signal value of the lower water chamber collected by the second temperature sensor, and a temperature signal value of the engine collected by the third temperature sensor.
A determining module 902, configured to determine a temperature difference between the upper water chamber and the lower water chamber according to the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber.
And a judging module 903, configured to judge whether the radiator is blocked according to the temperature difference and a temperature signal value of the engine.
Optionally, the determining module 903 shown above is specifically configured to determine the water temperature of the engine according to the temperature signal value of the engine if the temperature difference is greater than or equal to a preset temperature difference; and judging whether the radiator is blocked or not according to the rotating speed of the engine and the water temperature of the engine.
Optionally, the determining module 903 shown above is specifically configured to determine whether the water temperature of the engine exceeds a preset maximum opening temperature if the rotation speed of the engine is greater than or equal to a preset rotation speed; if the water temperature of the engine exceeds the maximum opening temperature, determining the duration of the water temperature of the engine exceeding the maximum opening temperature; and judging whether the radiator is blocked or not according to the duration.
Optionally, the determining module 903 shown above is specifically configured to determine that the radiator is blocked if the duration exceeds a preset time period.
Optionally, the radiator diagnosis apparatus 900 of the construction machine may further include:
the first sending module is used for sending the fault code of the blockage of the radiator to the display screen if the radiator is blocked, so that the display screen displays the fault code.
Optionally, the radiator diagnosis apparatus 900 of the construction machine may further include:
and the second sending module is used for sending fault alarm information to the display screen if the radiator is blocked, so that the display screen displays the fault alarm information.
Optionally, the radiator diagnosis apparatus 900 of the construction machine may further include:
a calibration module, configured to, before the determining module 903 determines the water temperature of the engine according to a temperature signal value of the engine if the temperature difference is greater than or equal to a preset temperature difference, control the engine to perform a pressure holding operation at different rotation speeds under the condition that the ambient temperature is greater than or equal to the preset temperature and the radiator is subjected to sealing treatment until the water temperature of the engine exceeds the maximum opening temperature; collecting a calibration temperature signal value of the upper water chamber and a calibration temperature signal value of the lower water chamber under the condition of keeping the preset duration; determining a calibration temperature difference value of the upper water chamber and the lower water chamber according to the calibration temperature signal value of the upper water chamber and the calibration temperature signal value of the lower water chamber; determining the preset temperature difference value according to the calibration temperature difference value
The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 10 is a schematic diagram of an engine controller provided in an embodiment of the present application, where the engine controller may be integrated with the engine controller or a chip of the engine controller.
The engine controller 1000 includes: memory 1001, processor 1002. The memory 1001 and the processor 1002 are connected by a bus.
The memory 1001 is used for storing programs, and the processor 1002 calls the programs stored in the memory 1001 to execute the above-mentioned method embodiments. The specific implementation and technical effects are similar, and are not described herein again.
Optionally, the present application also provides a program product, such as a computer readable storage medium, comprising a program which, when being executed by a processor, is adapted to carry out the above-mentioned method embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A radiator diagnostic system for a construction machine, the radiator diagnostic system comprising: the system comprises an engine, a radiator, a first temperature sensor, a second temperature sensor and an engine controller; an inlet of the engine is communicated with an upper water chamber of the radiator through an upper water pipe, and a water outlet of the engine is communicated with a lower water chamber of the radiator through a lower water pipe; the first temperature sensor is arranged in the upper water chamber, and the second temperature sensor is arranged in the lower water chamber;
the first temperature sensor and the second temperature sensor are respectively connected with the engine controller to respectively transmit the acquired temperature signal value of the upper water chamber and the acquired temperature signal value of the lower water chamber to the engine controller, so that the engine controller determines the temperature difference value of the upper water chamber and the lower water chamber based on the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber;
the engine controller is also connected with a third temperature sensor in the engine to acquire a temperature signal value of the engine acquired by the third temperature sensor, if the temperature difference value is greater than or equal to a preset temperature difference value, the water temperature of the engine is determined according to the temperature signal value of the engine, and whether the radiator is blocked or not is judged according to the rotating speed of the engine and the water temperature of the engine;
the third temperature sensor is arranged in a cooling water tank in the engine, and the preset temperature difference is stored in advance in a calibration stage and set in the engine controller.
2. The radiator diagnostic system of claim 1, further comprising: and the display screen is connected with the engine controller.
3. A radiator diagnosis method for a construction machine, which is applied to an engine controller in the radiator diagnosis system according to claim 2, the method comprising:
acquiring a temperature signal value of the upper water chamber acquired by the first temperature sensor, a temperature signal value of the lower water chamber acquired by the second temperature sensor and a temperature signal value of the engine acquired by the third temperature sensor;
according to the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber, the temperature difference value of the upper water chamber and the lower water chamber is determined;
judging whether the radiator is blocked or not according to the temperature difference value and the temperature signal value of the engine;
wherein, the judging whether the radiator is blocked according to the temperature difference value and the temperature signal value of the engine comprises the following steps:
if the temperature difference is larger than or equal to a preset temperature difference, determining the water temperature of the engine according to the temperature signal value of the engine;
judging whether the radiator is blocked or not according to the rotating speed of the engine and the water temperature of the engine;
the third temperature sensor is arranged in a cooling water tank in the engine, and the preset temperature difference is stored in advance in a calibration stage and set in the engine controller.
4. The method of claim 3, wherein said determining whether the radiator is clogged based on the rotational speed of the engine and the water temperature of the engine comprises:
if the rotating speed of the engine is greater than or equal to a preset rotating speed, judging whether the water temperature of the engine exceeds a preset maximum opening temperature;
if the water temperature of the engine exceeds the maximum opening temperature, determining the duration of the water temperature of the engine exceeding the maximum opening temperature;
and judging whether the radiator is blocked or not according to the duration.
5. The method of claim 4, wherein said determining whether the heat sink is clogged based on the duration comprises:
and if the duration time exceeds the preset time, determining that the radiator is blocked.
6. The method according to any one of claims 3-5, further comprising:
and if the radiator is blocked, sending the fault code of the blocked radiator to the display screen, so that the display screen displays the fault code.
7. The method according to any one of claims 3-5, further comprising:
if the radiator is blocked, fault alarm information is sent to the display screen, so that the display screen displays the fault alarm information.
8. The method of claim 5, wherein before determining the water temperature of the engine based on the temperature signal value of the engine if the temperature difference is greater than or equal to a predetermined temperature difference, the method further comprises:
when the ambient temperature is greater than or equal to a preset temperature and the radiator is subjected to sealing treatment, controlling the engine to perform pressure build-up action at different rotating speeds until the water temperature of the engine exceeds the maximum opening temperature;
acquiring a calibration temperature signal value of the upper water chamber and a calibration temperature signal value of the lower water chamber under the condition of keeping the preset duration;
determining a calibration temperature difference value of the upper water chamber and the lower water chamber according to the calibration temperature signal value of the upper water chamber and the calibration temperature signal value of the lower water chamber;
and determining the preset temperature difference value according to the calibration temperature difference value.
9. A radiator diagnosis device for a construction machine, wherein the radiator diagnosis device is applied to an engine controller in the radiator diagnosis system according to claim 2, and the radiator diagnosis device comprises:
an obtaining module, configured to obtain a temperature signal value of the upper water chamber collected by the first temperature sensor, a temperature signal value of the lower water chamber collected by the second temperature sensor, and a temperature signal value of the engine collected by the third temperature sensor, where the third temperature sensor is disposed in a cooling water tank in the engine;
the determining module is used for determining the temperature difference value of the upper water chamber and the lower water chamber according to the temperature signal value of the upper water chamber and the temperature signal value of the lower water chamber;
the judging module is used for judging whether the radiator is blocked or not according to the temperature difference value and the temperature signal value of the engine;
the judging module is specifically configured to determine a water temperature of the engine according to a temperature signal value of the engine if the temperature difference is greater than or equal to a preset temperature difference, and judge whether the radiator is blocked according to the rotation speed of the engine and the water temperature of the engine, where the preset temperature difference is pre-stored and set in the engine controller in a calibration stage.
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| CN114320564B (en) * | 2022-01-19 | 2022-11-18 | 上海世德子汽车零部件有限公司 | Engine coolant delivery control method and system |
| CN118970111A (en) * | 2024-08-06 | 2024-11-15 | 广州汽车集团股份有限公司 | Fuel cell engine water temperature detection method, device, equipment, medium and product |
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| JP2005256447A (en) * | 2004-03-12 | 2005-09-22 | Hitachi Constr Mach Co Ltd | Performance deterioration predictor for heat exchanger of construction machine, and cooling system |
| JP4677973B2 (en) * | 2006-10-31 | 2011-04-27 | 日産自動車株式会社 | Failure diagnosis device for engine cooling system |
| CN203769925U (en) * | 2014-04-17 | 2014-08-13 | 温州职业技术学院 | Car radiator with reliably connected water inlet and outlet hoses |
| CN205477897U (en) * | 2016-02-08 | 2016-08-17 | 洪俊彬 | An intelligent self-test radiator |
| CN205977391U (en) * | 2016-07-01 | 2017-02-22 | 宝沃汽车（中国）有限公司 | Vehicle temperature saver trouble monitoring device and vehicle |
| JP6749877B2 (en) * | 2017-09-26 | 2020-09-02 | 日立建機株式会社 | Cooling fan controller |
| CN110056427B (en) * | 2019-06-19 | 2019-09-20 | 潍柴动力股份有限公司 | Method, device and system for engine detection |
| CN210948882U (en) * | 2019-11-29 | 2020-07-07 | 河南沃辰金属科技有限公司 | Self-checking early warning system of radiator |
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