CN112594048A - Control method of engine of vehicle, electronic control unit, processor and vehicle - Google Patents
Control method of engine of vehicle, electronic control unit, processor and vehicle Download PDFInfo
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- CN112594048A CN112594048A CN202011401692.2A CN202011401692A CN112594048A CN 112594048 A CN112594048 A CN 112594048A CN 202011401692 A CN202011401692 A CN 202011401692A CN 112594048 A CN112594048 A CN 112594048A
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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
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
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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
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/84—Data processing systems or methods, management, administration
Abstract
The application provides a control method of an engine of a vehicle, an electronic control unit, a processor and the vehicle, wherein the control method of the engine of the vehicle comprises the following steps: the method comprises the steps of acquiring the gradient condition of a road at a first preset distance in front of the running of a vehicle in real time, wherein the gradient condition comprises the following steps: uphill, downhill or level; correcting a set curve of water temperature and rotation speed according to the gradient condition, wherein the set curve of the water temperature and rotation speed is a relation curve of water temperature of an engine and rotation speed of a fan calibrated during vehicle development; and controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed. The method realizes the adjustment of the set curve of the water temperature and the rotation speed according to the road condition, solves the problem that the influence of the road condition on the water temperature rising rate cannot be comprehensively considered by the existing water temperature and fan rotation speed curve calibrated in the ECU, realizes the optimization of the fan rotation speed control, saves the power consumption, realizes the aim of saving oil and avoids the resource waste.
Description
Technical Field
The present application relates to the field of vehicles, and in particular, to a control method of an engine of a vehicle, an electronic control unit, a computer-readable storage medium, a processor, and a vehicle.
Background
Currently, in vehicle model development, a reasonable water temperature-fan speed curve is defined in an ECU (Electronic Control Unit), and the curve determines appropriate calibration data in vehicle model development, as shown in table 1 below: the first row represents water temperature and the second row represents fan demand speed. The curve cannot be set in a way of comprehensively considering the influence of road conditions on the water temperature rise rate, and cannot save oil, so that the waste condition exists.
TABLE 1
| -0.040 | 14.960 | 29.960 | 44.960 | 59.960 | 87.960 | 92.960 | 99.960 |
| 0.00 | 0.00 | 0.00 | 400.00 | 800.00 | 1000.00 | 2000.00 | 3000.00 |
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The application mainly aims to provide a control method of an engine of a vehicle, an electronic control unit, a computer readable storage medium, a processor and the vehicle, so as to solve the problems that in the prior art, a water temperature-fan rotating speed curve calibrated by an ECU (electronic control Unit) cannot comprehensively consider the influence of road conditions on the water temperature rising rate, cannot save oil and is wasteful.
According to an aspect of an embodiment of the present invention, there is provided a control method of an engine of a vehicle, including: obtaining in real time a slope condition of a road ahead of a vehicle traveling a first predetermined distance, the slope condition comprising: uphill, downhill or level; correcting a set curve of water temperature and rotation speed according to the gradient condition, wherein the set curve of the water temperature and the rotation speed is a relation curve of the water temperature of the engine and the rotation speed of the fan, which is calibrated during the development of the vehicle; and controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed.
Optionally, the obtaining of the gradient of the road ahead of the vehicle at the first predetermined distance in real time comprises: determining whether a positioning device of the vehicle is working normally; under the condition that a positioning device of the vehicle works normally, acquiring position information at a third preset distance in front of the vehicle in driving at intervals of a second preset distance, wherein the second preset distance is greater than the third preset distance, and the second preset distance is smaller than the first preset distance; determining the slope condition based on a plurality of the position information.
Optionally, the obtaining of the gradient of the road ahead of the vehicle at the first predetermined distance in real time further comprises: in the case where the positioning device of the vehicle is not operating normally, it is determined that the vehicle is currently on an uphill slope.
Optionally, the position information is gradient information, and determining the gradient condition according to a plurality of pieces of position information includes: reconstructing a road in front of the vehicle according to the position information to obtain a reconstructed road; and determining the gradient situation according to the reconstructed road.
Optionally, the modifying the set curve of the water temperature and the rotation speed according to the gradient condition comprises: determining a correction coefficient according to the gradient condition; and correcting the set curve of the water temperature and the rotating speed according to the correction coefficient.
Optionally, determining a correction factor according to the gradient condition includes: determining the correction coefficient to be a first numerical value under the condition that the gradient condition is an uphill slope; determining the correction coefficient to be a second numerical value under the condition that the slope condition is a downward slope, wherein the second numerical value is smaller than the first numerical value; and determining the correction coefficient to be a third value under the condition that the gradient condition is a flat road, wherein the third value is smaller than the first value and larger than the second value.
Optionally, the modifying the set curve of the water temperature and the rotation speed according to the modification coefficient includes: and multiplying the correction coefficient by the rotating speed in the set curve of the water temperature rotating speed to obtain the corrected set curve of the water temperature rotating speed.
According to another aspect of the embodiments of the present invention, there is also provided an electronic control unit of an engine of a vehicle, including an acquisition unit, a correction unit, and a control unit, wherein the acquisition unit is configured to acquire, in real time, a gradient situation of a road ahead of the vehicle at a first predetermined distance, the gradient situation including: uphill, downhill or level; the correction unit is used for correcting a set curve of water temperature and rotation speed according to the gradient situation, wherein the set curve of the water temperature and the rotation speed of the fan is a relation curve of the water temperature of the engine and the rotation speed of the fan, which is calibrated during the development of the vehicle; and the control unit is used for controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed.
According to still another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program executes any one of the methods.
According to another aspect of the embodiments of the present invention, there is also provided a processor, configured to execute a program, where the program executes any one of the methods.
According to another aspect of embodiments of the present invention, there is also provided a vehicle comprising an electronic control unit of an engine for performing any one of the methods.
The application provides a control method of an engine of a vehicle, which comprises the steps of firstly obtaining the slope conditions of an uphill slope, a downhill slope or a level road at a first preset distance in front of the running of the vehicle in real time, then correcting a set curve of water temperature rotating speed according to the slope conditions, wherein the set curve of the water temperature rotating speed is a relation curve of water temperature of the engine and rotating speed of a fan calibrated during vehicle development, and finally controlling the rotating speed of the fan according to the corrected set curve of the water temperature rotating speed. According to the method, the gradient conditions of an uphill slope, a downhill slope or a level road at a first preset distance ahead of the vehicle are obtained in real time, the set curve of the water temperature rotating speed is corrected according to the gradient conditions, and the rotating speed of the fan is controlled according to the revised set curve of the water temperature rotating speed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a schematic flow chart generated by a control method of an engine of a vehicle according to an embodiment of the present application;
FIG. 2 shows a flow chart diagram of a control method of an engine of a vehicle according to a specific embodiment of the present application;
fig. 3 shows a schematic configuration diagram of an electronic control unit of an engine of a vehicle according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, 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 only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
For convenience of description, some terms or expressions referred to in the embodiments of the present application are explained below:
an ECU: the electronic control unit is a controller that performs calculation, processing, and judgment based on signals input from the sensors, and outputs commands to control the operation of the actuator.
As mentioned in the background art, in order to solve the above problems, in a typical embodiment of the present application, a control method for an engine of a vehicle, an electronic control unit, a computer-readable storage medium, a processor, and a vehicle are provided.
According to an embodiment of the present application, a control method of an engine of a vehicle is provided.
Fig. 1 is a flowchart of a control method of an engine of a vehicle according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S101, obtaining the gradient condition of a road at a first preset distance ahead of the vehicle in real time, wherein the gradient condition comprises the following steps: uphill, downhill or level;
step S102, correcting a set curve of water temperature and rotation speed according to the gradient situation, wherein the set curve of the water temperature and rotation speed is a relation curve of water temperature of the engine and rotation speed of the fan calibrated during the development of the vehicle;
and step S103, controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed.
The control method of the engine of the vehicle comprises the steps of firstly obtaining the slope condition of an uphill slope, a downhill slope or a flat road at a first preset distance in front of the running of the vehicle in real time, then correcting a set curve of water temperature and rotating speed according to the slope condition, wherein the set curve of the water temperature and rotating speed is a relation curve of the water temperature of the engine and the rotating speed of a fan calibrated during the development of the vehicle, and finally controlling the rotating speed of the fan according to the corrected set curve of the water temperature and rotating speed. According to the method, the slope conditions of an uphill slope, a downhill slope or a level road at a first preset distance ahead of the running vehicle are obtained in real time, the set curve of the water temperature rotating speed is corrected according to the slope conditions, and the rotating speed of the fan is controlled according to the revised set curve of the water temperature rotating speed.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
In order to accurately obtain the gradient condition of the road at the first predetermined distance ahead of the vehicle in real time, according to a specific embodiment of the present application, the method for obtaining the gradient condition of the road at the first predetermined distance ahead of the vehicle in real time includes: determining whether the positioning device of the vehicle normally works at present; acquiring position information of a third predetermined distance ahead of the vehicle at every second predetermined distance when a positioning device of the vehicle is operating normally, the second predetermined distance being greater than the third predetermined distance, the second predetermined distance being less than the first predetermined distance; the gradient condition is determined based on a plurality of the position information. Under the condition that the positioning device of the vehicle normally works, the slope condition of the road obtained in real time is ensured to be accurate, and the method provides guarantee for accurately correcting the set curve of the water temperature and the rotating speed according to the slope condition.
According to another specific embodiment of the application, the method for acquiring the gradient condition of the road at the first preset distance in front of the vehicle in real time further comprises the following steps: in the case where the positioning device of the vehicle is not operating normally, it is determined that the vehicle is currently on an uphill slope. Under the condition that the positioning device of the vehicle does not work normally, the current position of the vehicle on an uphill slope is determined, the set curve of the water temperature rotating speed is revised according to the uphill slope, the rotating speed of the fan is controlled according to the revised set curve of the water temperature rotating speed, the engine of the vehicle is prevented from being overheated, the safety and the long service life of the engine are guaranteed, and the economy of the engine is guaranteed.
It should be noted that, in the control of the current electric control fan, the ECU controls the fan to operate according to temperature signals such as water temperature, etc., under the condition that the heat dissipation capacity of the engine is the same, the rising rate of the water temperature caused by ascending is larger than that of the water temperature caused by level road and descending, and the temperature value of the water temperature uprush is higher than that of other gradient conditions, so that the water temperature threshold value of the fan operation needs to be adjusted timely when the road gradient is adopted, and the engine water temperature is optimized. Therefore, under the condition that the positioning device of the vehicle does not work normally, the slope condition is determined as that the vehicle is in an uphill slope at present, the rotating speed of the fan can be ensured to meet the heat dissipation requirement of the engine of the vehicle, and the safety and the economical efficiency of the engine are further ensured.
In another specific embodiment of the present application, the determining the slope condition according to a plurality of pieces of position information includes: reconstructing a road in front of the vehicle according to the position information to obtain a reconstructed road; and determining the gradient condition according to the reconstructed road. The method comprises the steps of reconstructing a road in front of the vehicle according to the position information to obtain a reconstructed road; according to the reconstructed road, the gradient condition is determined, so that the gradient condition of the road in front of the running vehicle can be accurately and efficiently determined, and the set curve of the water temperature and the rotating speed can be accurately corrected according to the gradient condition.
In the practical application process, the set curve of the water temperature and the rotating speed is corrected according to the gradient condition, and the correction process comprises the following steps: determining a correction coefficient according to the gradient condition; and correcting the set curve of the water temperature and the rotating speed according to the correction coefficient. According to the method, the correction coefficient is determined according to the gradient condition, and the set curve of the water temperature and the rotation speed is corrected according to the correction coefficient, so that the problem that the influence of road conditions on the water temperature rising rate cannot be comprehensively considered in the existing water temperature and fan rotation speed curve calibrated in the ECU is further solved, the optimization of fan rotation speed control is realized, and the aim of saving oil is fulfilled.
In order to further accurately correct the set curve of the water temperature and the rotation speed, in another specific embodiment of the present application, the determining a correction coefficient according to the gradient condition includes: determining the correction coefficient to be a first value when the gradient condition is an uphill; determining the correction coefficient to be a second value in a case where the gradient condition is a downward gradient, the second value being smaller than the first value; when the gradient condition is a flat road, the correction coefficient is determined to be a third value, and the third value is smaller than the first value and larger than the second value. The method comprises determining the correction factor to be a first value when the gradient condition is an uphill gradient; determining the correction coefficient to be a second value in a case where the gradient condition is a downward gradient, the second value being smaller than the first value; and under the condition that the slope condition is a flat road, determining the correction coefficient to be a third numerical value, further ensuring that the rotating speed of the fan is accurately controlled under the condition of different slopes, and further ensuring that the oil-saving effect is better.
The third value is smaller than the first value and larger than the second value because the rate of increase of the water temperature caused by the vehicle on an uphill slope is larger than the rates of increase of the water temperature caused by a flat road and a downhill slope, and the rate of increase of the water temperature caused by the vehicle on a flat road is larger than the rate of increase of the water temperature caused by a downhill slope.
In another specific embodiment of the present application, the correcting the set curve of the water temperature and the rotational speed according to the correction coefficient includes: and multiplying the correction coefficient by the rotating speed in the set curve of the water temperature rotating speed to obtain the corrected set curve of the water temperature rotating speed. The corrected setting curve of the water temperature rotating speed is obtained by multiplying the correction coefficient by the rotating speed in the setting curve of the water temperature rotating speed, the corrected setting curve of the water temperature rotating speed is ensured to be obtained easily, the setting curve of the water temperature rotating speed basically fits the gradient condition of the road of the vehicle, the optimization of the control of the rotating speed of the fan is further ensured, the power consumption is saved, the oil saving effect is realized, the rotating speed of the fan is controlled according to the corrected setting curve of the water temperature rotating speed, the good heat dissipation effect of the engine under different gradient conditions is ensured, and the safety and the service life of the engine are further ensured.
In a specific embodiment of the present application, a control method of an engine of a vehicle generates a flowchart as shown in fig. 2. The vehicle positioning device is a GPS positioning terminal, a high-precision map is built in the GPS positioning terminal, the first numerical value is x, x is 1, the second numerical value is y, y is 0.97, the third numerical value is z, z is 0.98, the first predetermined distance is 2km, the second predetermined distance is 100, and the third predetermined distance is 25m, that is, when the vehicle positioning device is operating normally, a gradient of a road 2km ahead of the vehicle is acquired in real time, position information of the road 25m ahead of the vehicle is acquired every 100m, the position information is gradient information, and the road ahead of the vehicle is reconstructed according to the position information to obtain a reconstructed road; determining the gradient condition according to the reconstructed road; in the case where the positioning device of the vehicle is not operating normally, it is determined that the vehicle is currently on an uphill slope. Of course, the first predetermined distance, the second predetermined distance, and the third predetermined distance may be other values, and those skilled in the art may select the distance according to actual situations, the vehicle positioning device may be other positioning devices, the first numerical value, the second numerical value, and the third numerical value may be represented by other symbols, and the values of the first numerical value, the second numerical value, and the third numerical value may be other values.
The embodiment of the present application further provides an electronic control unit of an engine of a vehicle, and it should be noted that the electronic control unit of the engine of the vehicle of the embodiment of the present application may be used to execute the control method for the engine of the vehicle provided in the embodiment of the present application. The following describes an electronic control unit of an engine of a vehicle according to an embodiment of the present application.
Fig. 3 is a schematic diagram of an electronic control unit of an engine of a vehicle according to an embodiment of the present application. As shown in fig. 3, the electronic control unit includes an obtaining unit 10, a correcting unit 20 and a control unit 30, wherein the obtaining unit 10 is used for obtaining the gradient condition of the road at a first preset distance in front of the vehicle in real time, and the gradient condition comprises: uphill, downhill or level; the correcting unit 20 is configured to correct a set curve of a water temperature and a rotational speed of a fan, which is a relationship curve between the water temperature of the engine and the rotational speed of the fan calibrated during the development of the vehicle, according to the gradient situation; the control unit 30 is configured to control the rotation speed of the fan according to the corrected setting curve of the water temperature and the rotation speed.
The electronic control unit of the engine of the vehicle may acquire, in real time, a gradient of a road ahead of the vehicle at a first predetermined distance, through the acquisition unit, where the gradient includes: and an uphill slope, a downhill slope or a flat road, wherein the setting curve of the water temperature and the rotation speed of the fan is corrected by the correction means according to the slope condition, the setting curve of the water temperature and the rotation speed of the fan is a relation curve of the water temperature of the engine and the rotation speed of the fan calibrated during the development of the vehicle, and the rotation speed of the fan is controlled by the control means according to the corrected setting curve of the water temperature and the rotation speed. The device corrects the set curve of the water temperature rotating speed by acquiring the gradient conditions such as ascending slope, descending slope or level road of the road at the first preset distance ahead of the vehicle in real time, and controls the rotating speed of the fan according to the revised set curve of the water temperature rotating speed.
In order to more accurately obtain the gradient condition of the road at the first predetermined distance ahead of the vehicle in real time, according to a specific embodiment of the present application, the obtaining unit includes a first determining module, an obtaining module, and a second determining module, where the first determining module is configured to determine whether a current positioning device of the vehicle is working normally; the acquisition module is configured to acquire position information of a third predetermined distance ahead of the vehicle at every second predetermined distance when the positioning device of the vehicle is operating normally, where the second predetermined distance is greater than the third predetermined distance, and the second predetermined distance is smaller than the first predetermined distance; the second determining module is configured to determine the slope condition based on a plurality of the position information. Under the condition that the positioning device of the vehicle normally works, the slope condition of the road obtained in real time is ensured to be accurate, and the method provides guarantee for accurately correcting the set curve of the water temperature and the rotating speed according to the slope condition.
According to another specific embodiment of the present application, the obtaining unit further includes a third determining module, and the third determining module is configured to determine that the vehicle is currently on an uphill slope in a case where the positioning device of the vehicle is not operating normally. Under the condition that the positioning device of the vehicle does not work normally, the current position of the vehicle on an uphill slope is determined, the set curve of the water temperature rotating speed is revised according to the uphill slope, the rotating speed of the fan is controlled according to the revised set curve of the water temperature rotating speed, the engine of the vehicle is prevented from being overheated, the safety and the long service life of the engine are guaranteed, and the economy of the engine is guaranteed.
It should be noted that, in the control of the current electric control fan, the ECU controls the fan to operate according to temperature signals such as water temperature, etc., under the condition that the heat dissipation capacity of the engine is the same, the rising rate of the water temperature caused by ascending is larger than that of the water temperature caused by level road and descending, and the temperature value of the water temperature uprush is higher than that of other gradient conditions, so that the water temperature threshold value of the fan operation needs to be adjusted timely when the road gradient is adopted, and the engine water temperature is optimized. Therefore, under the condition that the positioning device of the vehicle does not work normally, the slope condition is determined as that the vehicle is in an uphill slope at present, the rotating speed of the fan can be ensured to meet the heat dissipation requirement of the engine of the vehicle, and the safety and the economical efficiency of the engine are further ensured.
In another specific embodiment of the present application, the position information is gradient information, and the second determining module includes a reconstructing submodule and a first determining submodule, where the reconstructing submodule is configured to reconstruct a road ahead of the vehicle according to the position information to obtain a reconstructed road; the first determining submodule is configured to determine the gradient condition according to the reconstructed road. The device reconstructs a road ahead of the vehicle according to the position information to obtain a reconstructed road; according to the reconstructed road, the gradient condition is determined, so that the gradient condition of the road in front of the running vehicle can be accurately and efficiently determined, and the set curve of the water temperature and the rotating speed can be accurately corrected according to the gradient condition.
In an actual application process, the correction unit includes a fourth determination module and a correction module, where the fourth determination module is configured to determine a correction coefficient according to the gradient condition; the correction module is used for correcting the set curve of the water temperature and the rotating speed according to the correction coefficient. The device determines a correction coefficient according to the gradient condition, and corrects the set curve of the water temperature and the rotation speed according to the correction coefficient, so that the problem that the influence of road conditions on the water temperature rising rate cannot be comprehensively considered in the existing water temperature and fan rotation speed curve calibrated in the ECU is further solved, the optimization of the fan rotation speed control is realized, and the aim of saving oil is fulfilled.
In order to further accurately correct the set curve of the water temperature and the rotation speed, in another specific embodiment of the present application, the fourth determining module includes a second determining submodule, a third determining submodule, and a fourth determining submodule, wherein the second determining submodule is configured to determine that the correction coefficient is the first value when the gradient condition is an uphill gradient; the third determination submodule is configured to determine that the correction coefficient is a second value, which is smaller than the first value, when the gradient condition is a downhill; the fourth determination submodule is configured to determine the correction coefficient to be a third value, which is smaller than the first value and larger than the second value, when the gradient condition is a flat road. The device may be configured to determine the correction coefficient to be a first value when the gradient is an uphill slope; determining the correction coefficient to be a second value in a case where the gradient condition is a downward gradient, the second value being smaller than the first value; and under the condition that the slope condition is a flat road, determining the correction coefficient to be a third numerical value, further ensuring that the rotating speed of the fan is accurately controlled under the condition of different slopes, and further ensuring that the oil-saving effect is better.
The third value is smaller than the first value and larger than the second value because the rate of increase of the water temperature caused by the vehicle on an uphill slope is larger than the rates of increase of the water temperature caused by a flat road and a downhill slope, and the rate of increase of the water temperature caused by the vehicle on a flat road is larger than the rate of increase of the water temperature caused by a downhill slope.
In another specific embodiment of the application, the correction module includes a multiplication submodule, and the multiplication submodule is configured to multiply the correction coefficient with the rotation speed in the setting curve of the water temperature and the rotation speed to obtain a corrected setting curve of the water temperature and the rotation speed. The corrected setting curve of the water temperature rotating speed is obtained by multiplying the correction coefficient by the rotating speed in the setting curve of the water temperature rotating speed, the corrected setting curve of the water temperature rotating speed is ensured to be obtained easily, the setting curve of the water temperature rotating speed basically fits the gradient condition of the road of the vehicle, the optimization of the control of the rotating speed of the fan is further ensured, the power consumption is saved, the oil saving effect is realized, the rotating speed of the fan is controlled according to the corrected setting curve of the water temperature rotating speed, the good heat dissipation effect of the engine under different gradient conditions is ensured, and the safety and the service life of the engine are further ensured.
In a specific embodiment of the present application, the vehicle positioning device is a GPS positioning terminal, a high-precision map is built in the GPS positioning terminal, the first numerical value is x, x is 1, the second numerical value is y, y is 0.97, the third numerical value is z, z is 0.98, the first predetermined distance is 2km, the second predetermined distance is 100, and the third predetermined distance is 25m, that is, when the vehicle positioning device is operating normally, a slope condition of a road 2km ahead of the vehicle is obtained in real time, position information of 25m ahead of the vehicle is obtained every 100m, the position information is slope information, and the road ahead of the vehicle is reconstructed from the position information to obtain a reconstructed road; determining the gradient condition according to the reconstructed road; in the case where the positioning device of the vehicle is not operating normally, it is determined that the vehicle is currently on an uphill slope. Of course, the first predetermined distance, the second predetermined distance, and the third predetermined distance may be other values, and those skilled in the art may select the distance according to actual situations, the vehicle positioning device may be other positioning devices, the first numerical value, the second numerical value, and the third numerical value may be represented by other symbols, and the values of the first numerical value, the second numerical value, and the third numerical value may be other values.
The electronic control unit of the engine of the vehicle includes a processor and a memory, the acquiring unit, the correcting unit, the control unit, and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problems that in the prior art, the influence of road conditions on the water temperature rising rate cannot be comprehensively considered, oil cannot be saved, and waste exists in a water temperature-fan rotating speed curve calibrated by the ECU are solved by adjusting kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having stored thereon a program that, when executed by a processor, implements the control method of the engine of the vehicle described above.
An embodiment of the present invention provides a processor, where the processor is configured to execute a program, where the program executes a control method of an engine of the vehicle when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:
step S101, obtaining the gradient condition of a road at a first preset distance ahead of the vehicle in real time, wherein the gradient condition comprises the following steps: uphill, downhill or level;
step S102, correcting a set curve of water temperature and rotation speed according to the gradient situation, wherein the set curve of the water temperature and rotation speed is a relation curve of water temperature of the engine and rotation speed of the fan calibrated during the development of the vehicle;
and step S103, controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:
step S101, obtaining the gradient condition of a road at a first preset distance ahead of the vehicle in real time, wherein the gradient condition comprises the following steps: uphill, downhill or level;
step S102, correcting a set curve of water temperature and rotation speed according to the gradient situation, wherein the set curve of the water temperature and rotation speed is a relation curve of water temperature of the engine and rotation speed of the fan calibrated during the development of the vehicle;
and step S103, controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed.
According to yet another exemplary embodiment of the present application, there is also provided a vehicle comprising an electronic control unit of an engine for performing any one of the above-described methods.
The vehicle executes the method through the electronic control unit of the engine, the slope conditions of an uphill slope, a downhill slope or a level road at a first preset distance in front of the vehicle in real time are obtained, the set curve of the water temperature and the rotating speed is corrected according to the slope conditions, and the rotating speed of the fan is controlled according to the corrected set curve of the water temperature and the rotating speed. And through the method, the vehicle controls the rotating speed of the fan according to the corrected set curve of the water temperature rotating speed, so that the engine is prevented from overheating under the condition that the vehicle is on an uphill slope, a downhill slope or a flat road, the safety and the long service life of the engine are ensured, and the economical efficiency of the vehicle is ensured.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be 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, units or modules, and may be in an electrical 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 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 invention 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, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) the method for controlling the engine of the vehicle comprises the steps of firstly obtaining the gradient situation of an uphill slope, a downhill slope or a flat road at a first preset distance in front of the running vehicle in real time, then correcting a set curve of water temperature and rotating speed according to the gradient situation, wherein the set curve of the water temperature and rotating speed is a relation curve of the water temperature of the engine and the rotating speed of a fan calibrated during the development of the vehicle, and finally controlling the rotating speed of the fan according to the corrected set curve of the water temperature and rotating speed. According to the method, the slope conditions of an uphill slope, a downhill slope or a level road at a first preset distance ahead of the running vehicle are obtained in real time, the set curve of the water temperature rotating speed is corrected according to the slope conditions, and the rotating speed of the fan is controlled according to the revised set curve of the water temperature rotating speed.
2) The application also provides an electronic control unit of an engine of a vehicle, which is used for acquiring the gradient condition of a road at a first preset distance ahead of the vehicle in real time through the acquisition unit, wherein the gradient condition comprises the following steps: and an uphill slope, a downhill slope or a flat road, wherein the setting curve of the water temperature and the rotation speed of the fan is corrected by the correction means according to the slope condition, the setting curve of the water temperature and the rotation speed of the fan is a relation curve of the water temperature of the engine and the rotation speed of the fan calibrated during the development of the vehicle, and the rotation speed of the fan is controlled by the control means according to the corrected setting curve of the water temperature and the rotation speed. The device corrects the set curve of the water temperature rotating speed by acquiring the gradient conditions such as ascending slope, descending slope or level road of the road at the first preset distance ahead of the vehicle in real time, and controls the rotating speed of the fan according to the revised set curve of the water temperature rotating speed.
3) The vehicle realizes the adjustment of the set curve of the water temperature and the rotation speed according to the road condition, solves the problem that the influence of the road condition on the water temperature rising rate cannot be comprehensively considered due to the water temperature and the rotation speed curve of the fan calibrated in the existing ECU, realizes the optimization of the rotation speed control of the fan, saves the power consumption, realizes the purpose of saving oil and avoids the resource waste. And through the method, the vehicle controls the rotating speed of the fan according to the corrected set curve of the water temperature rotating speed, so that the engine is prevented from overheating under the condition that the vehicle is on an uphill slope, a downhill slope or a flat road, the safety and the long service life of the engine are ensured, and the economical efficiency of the vehicle is ensured.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. A control method of an engine of a vehicle, characterized by comprising:
obtaining in real time a slope condition of a road ahead of a vehicle traveling a first predetermined distance, the slope condition comprising: uphill, downhill or level;
correcting a set curve of water temperature and rotation speed according to the gradient condition, wherein the set curve of the water temperature and the rotation speed is a relation curve of the water temperature of the engine and the rotation speed of the fan, which is calibrated during the development of the vehicle;
and controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed.
2. The method of claim 1, wherein obtaining the slope of the road at the first predetermined distance ahead of the vehicle in real time comprises:
determining whether a positioning device of the vehicle is working normally;
under the condition that a positioning device of the vehicle works normally, acquiring position information at a third preset distance in front of the vehicle in driving at intervals of a second preset distance, wherein the second preset distance is greater than the third preset distance, and the second preset distance is smaller than the first preset distance;
determining the slope condition based on a plurality of the position information.
3. The method of claim 2, wherein obtaining the slope of the road at the first predetermined distance ahead of the vehicle in real time, further comprises:
in the case where the positioning device of the vehicle is not operating normally, it is determined that the vehicle is currently on an uphill slope.
4. The method of claim 2, wherein the location information is grade information, and wherein determining the grade based on a plurality of the location information comprises:
reconstructing a road in front of the vehicle according to the position information to obtain a reconstructed road;
and determining the gradient situation according to the reconstructed road.
5. The method according to any one of claims 1 to 4, wherein the correction of the set profile of the water temperature rotation speed according to the gradient condition comprises:
determining a correction coefficient according to the gradient condition;
and correcting the set curve of the water temperature and the rotating speed according to the correction coefficient.
6. The method of claim 5, wherein determining a correction factor based on the grade condition comprises:
determining the correction coefficient to be a first numerical value under the condition that the gradient condition is an uphill slope;
determining the correction coefficient to be a second numerical value under the condition that the slope condition is a downward slope, wherein the second numerical value is smaller than the first numerical value;
and determining the correction coefficient to be a third value under the condition that the gradient condition is a flat road, wherein the third value is smaller than the first value and larger than the second value.
7. The method of claim 5, wherein modifying the set profile of the water temperature and rotational speed according to the modification factor comprises:
and multiplying the correction coefficient by the rotating speed in the set curve of the water temperature rotating speed to obtain the corrected set curve of the water temperature rotating speed.
8. An electronic control unit of an engine of a vehicle, characterized by comprising:
an acquisition unit configured to acquire, in real time, a gradient situation of a road ahead of a vehicle traveling at a first predetermined distance, the gradient situation including: uphill, downhill or level;
the correction unit is used for correcting a set curve of water temperature and rotation speed according to the gradient situation, wherein the set curve of the water temperature and the rotation speed of the fan is a relation curve of the water temperature of the engine and the rotation speed of the fan calibrated during the development of the vehicle;
and the control unit is used for controlling the rotating speed of the fan according to the corrected set curve of the water temperature and the rotating speed.
9. A computer-readable storage medium, characterized in that the storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 7.
10. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 7.
11. A vehicle, characterized by comprising: an electronic control unit of an engine for performing the method of any one of claims 1 to 7.
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| CN202011401692.2A CN112594048B (en) | 2020-12-03 | 2020-12-03 | Control method of engine of vehicle, electronic control unit, processor and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565615A (en) * | 2021-07-06 | 2021-10-29 | 东风柳州汽车有限公司 | Control method, equipment, storage medium and device for improving cooling capacity of engine |
| CN115234355A (en) * | 2022-08-02 | 2022-10-25 | 广州汽车集团股份有限公司 | Water temperature control method and water temperature control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484850A (en) * | 2015-11-27 | 2016-04-13 | 潍柴动力股份有限公司 | Engine fan control method and system |
| CN105781706A (en) * | 2016-03-10 | 2016-07-20 | 优数通（北京）科技有限公司 | Control method and device for remote analysis of data of cooling fan of automobile engine |
| CN106089393A (en) * | 2015-04-30 | 2016-11-09 | 丰田自动车株式会社 | The automated driving system of vehicle |
| CN111156076A (en) * | 2020-01-09 | 2020-05-15 | 一汽解放汽车有限公司 | Vehicle fan control method and vehicle |
-
2020
- 2020-12-03 CN CN202011401692.2A patent/CN112594048B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089393A (en) * | 2015-04-30 | 2016-11-09 | 丰田自动车株式会社 | The automated driving system of vehicle |
| CN105484850A (en) * | 2015-11-27 | 2016-04-13 | 潍柴动力股份有限公司 | Engine fan control method and system |
| CN105781706A (en) * | 2016-03-10 | 2016-07-20 | 优数通（北京）科技有限公司 | Control method and device for remote analysis of data of cooling fan of automobile engine |
| CN111156076A (en) * | 2020-01-09 | 2020-05-15 | 一汽解放汽车有限公司 | Vehicle fan control method and vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565615A (en) * | 2021-07-06 | 2021-10-29 | 东风柳州汽车有限公司 | Control method, equipment, storage medium and device for improving cooling capacity of engine |
| CN115234355A (en) * | 2022-08-02 | 2022-10-25 | 广州汽车集团股份有限公司 | Water temperature control method and water temperature control device |
| CN115234355B (en) * | 2022-08-02 | 2023-10-20 | 广州汽车集团股份有限公司 | Water temperature control method and water temperature control device |
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| CN112594048B (en) | 2022-08-23 |
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