CN114407871A - Vehicle gear adjusting method, device and system and storage medium - Google Patents
Vehicle gear adjusting method, device and system and storage medium Download PDFInfo
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- CN114407871A CN114407871A CN202210318499.5A CN202210318499A CN114407871A CN 114407871 A CN114407871 A CN 114407871A CN 202210318499 A CN202210318499 A CN 202210318499A CN 114407871 A CN114407871 A CN 114407871A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0604—Throttle position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0657—Engine torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/10—Change speed gearings
- B60W2710/1005—Transmission ratio engaged
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Abstract
The application provides a vehicle gear adjusting method, a device, a system and a storage medium, wherein the method comprises the following steps: the method comprises the steps of obtaining an engine universal characteristic MAP (MAP) of a current vehicle, inquiring a decision gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle, calculating to obtain an initial execution gear of the current vehicle, calculating to obtain oil consumptions respectively corresponding to the initial execution gear and N gears in front of and behind the initial execution gear according to a first mapping relation and a second mapping relation, wherein N is a positive integer, and selecting a gear corresponding to the lowest oil consumption in the oil consumptions as the current execution gear of the current vehicle. Therefore, the accuracy requirement on the decision gear MAP is low, the calibration workload can be greatly reduced, the oil consumption of the initial execution gear and the oil consumption of the front and rear N gears are only calculated by combining the engine universal characteristic MAP of the current vehicle, the calculated amount is small, the real-time performance is high, the gear value can be adjusted on line according to the current actual working condition, the self-optimization of the vehicle gear is realized, the oil consumption of the vehicle is reduced, and the strategy robustness is good.
Description
Technical Field
The present disclosure relates to the field of vehicle control, and more particularly, to a method, an apparatus, a system and a storage medium for adjusting a gear of a vehicle.
Background
When a vehicle runs, a gear decision MAP is inquired through the opening of a vehicle pedal and the speed of the vehicle to obtain a current decision gear, wherein the gear decision MAP is a two-dimensional interpolation graph and reflects the mapping relation between an input variable and an output variable, two elements are input, after internal data interpolation, one element is output, namely the opening of the vehicle pedal and the speed of the vehicle are input, the current decision gear is output, and then parameters such as gradient correction and environment correction are added on the basis of the current decision gear to obtain a final required gear.
Therefore, the gear decision MAP is required to be accurately calibrated for each different vehicle type, the workload is huge, the data of the optimal gear decision MAP cannot be adjusted and optimized on line, and the optimal gear required by the vehicle operation is difficult to obtain so as to realize the minimum oil consumption of the whole vehicle.
Disclosure of Invention
In view of this, an object of the present application is to provide a method, an apparatus, a system and a storage medium for adjusting a gear of a vehicle, which reduce workload, and can adjust a gear value of the vehicle on line according to a current actual vehicle condition, thereby reducing oil consumption of the entire vehicle.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a vehicle gear adjustment method, including:
acquiring a MAP of the universal characteristics of the engine of the current vehicle; the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle;
inquiring a decision-making gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate to obtain an initial execution gear of the current vehicle, wherein the decision-making gear MAP of the current vehicle represents a second mapping relation between different vehicle speeds and different pedal openings of the current vehicle and different gears of the current vehicle;
calculating according to the first mapping relation and the second mapping relation to obtain oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear respectively; n is a positive integer;
and selecting the gear corresponding to the lowest oil consumption in the oil consumptions as the current execution gear of the current vehicle.
In one possible implementation, the method further includes:
judging whether the current execution gear is consistent with the initial execution gear;
if not, updating the current execution gear to the decision gear MAP of the current vehicle
In the figure, a fourth mapping relation between the current vehicle speed and the current pedal opening of the current vehicle and the current execution gear is formed.
In a possible implementation manner, the calculating, according to the first mapping relationship and the second mapping relationship, to obtain each oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear respectively includes:
calculating to obtain each torque corresponding to the initial execution gear of the current vehicle and N gears before and after the initial execution gear according to a third mapping relation between the initial execution gear of the current vehicle and N gears before and after the initial execution gear and the engine torque of the current vehicle;
and calculating to obtain the oil consumption respectively corresponding to the initial execution gear and N gears before and after the initial execution gear according to the current engine speed of the current vehicle and each torque.
In one possible implementation, N = 1.
In a second aspect, an embodiment of the present application provides a vehicle gear adjusting device, including:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring an engine universal characteristic MAP of a current vehicle; the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle;
the first calculation unit is used for inquiring a decision-making gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate and obtain an initial execution gear of the current vehicle, wherein the decision-making gear MAP of the current vehicle represents the second mapping relation between different vehicle speeds and different pedal openings of the current vehicle and different gears of the current vehicle;
the second calculation unit is used for calculating and obtaining oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear according to the first mapping relation and the second mapping relation; n is a positive integer;
and the selection unit is used for selecting the gear corresponding to the lowest oil consumption in the oil consumptions as the current execution gear of the current vehicle.
In one possible implementation, the apparatus further includes:
the judging unit is used for judging whether the current execution gear is consistent with the initial execution gear;
and the updating unit is used for updating the current execution gear into a decision gear MAP of the current vehicle to form a fourth mapping relation between the current vehicle speed and the current pedal opening of the current vehicle and the current execution gear when the current execution gear is inconsistent with the initial execution gear.
In one possible implementation manner, the second computing unit includes:
a first calculating subunit, configured to calculate, according to a third mapping relationship between the initial execution gear of the current vehicle and N gears before and after the initial execution gear, and an engine torque of the current vehicle, respective torques corresponding to the initial execution gear of the current vehicle and N gears before and after the initial execution gear;
and the second calculating subunit is used for calculating to obtain the oil consumptions respectively corresponding to the initial execution gear and N gears before and after the initial execution gear according to the current engine rotating speed of the current vehicle and each torque.
In one possible implementation, N = 1.
In a third aspect, an embodiment of the present application provides a vehicle gear adjustment system, including:
a memory for storing a computer program;
a processor for implementing the steps of the vehicle gear adjustment method as described above when executing the computer program.
In a fourth aspect, embodiments of the present application provide a computer storage medium having a computer program stored thereon, where the computer program is processed and executed to implement the steps of the vehicle gear adjusting method as described above.
The embodiment of the application provides a vehicle gear adjusting method, a vehicle gear adjusting device, a vehicle gear adjusting system and a storage medium, wherein the method comprises the following steps: the method comprises the steps of obtaining an engine universal characteristic MAP of a current vehicle, wherein the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle, inquiring a decision gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate the initial execution gear of the current vehicle, the decision gear MAP of the current vehicle characterizes a second mapping relationship between different vehicle speeds and different pedal openings of the current vehicle and, different gears of the current vehicle, and calculating according to the first mapping relation and the second mapping relation to obtain the oil consumption respectively corresponding to the initial execution gear and N gears before and after the initial execution gear, wherein N is a positive integer, and selecting the gear corresponding to the lowest oil consumption in the oil consumption as the current execution gear of the current vehicle. Therefore, the accuracy requirement on the decision gear MAP is low, the calibration workload can be greatly reduced, the oil consumption of the initial execution gear and N gears before and after the initial execution gear is only calculated by combining the engine universal characteristic MAP of the current vehicle, the calculation amount is small, the real-time performance is high, the gear value can be adjusted on line according to the current actual working condition, the self-optimization of the vehicle gear is realized, the oil consumption of the vehicle is reduced, and the strategy robustness is good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart illustrating a method for adjusting a gear of a vehicle according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating an engine MAP of an embodiment of the present application;
FIG. 3 is a schematic diagram of a vehicle gear adjusting device according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited by the specific embodiments disclosed below.
As described in the background art, when a vehicle runs, a gear decision MAP is usually queried through a vehicle pedal opening and a vehicle speed to obtain a current decision gear, wherein the gear decision MAP is a two-dimensional interpolation MAP, which reflects a mapping relation between an input variable and an output variable, two elements are input, after internal data interpolation, one element is output, namely the vehicle pedal opening and the vehicle speed are input, the current decision gear is output, and then parameters such as gradient correction and environment correction are added on the basis of the current decision gear to obtain a final required gear.
Therefore, the gear decision MAP is required to be accurately calibrated for each different vehicle type, the workload is huge, the data of the optimal gear decision MAP cannot be adjusted and optimized on line, and the optimal gear required by the vehicle operation is difficult to obtain so as to realize the minimum oil consumption of the whole vehicle.
In order to solve the above technical problem, embodiments of the present application provide a vehicle gear adjustment method, apparatus, system and storage medium, where the method includes: the method comprises the steps of obtaining an engine universal characteristic MAP of a current vehicle, wherein the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle, inquiring a decision gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate the initial execution gear of the current vehicle, the decision gear MAP of the current vehicle characterizes a second mapping relationship between different vehicle speeds and different pedal openings of the current vehicle and, different gears of the current vehicle, and calculating according to the first mapping relation and the second mapping relation to obtain the oil consumption respectively corresponding to the initial execution gear and N gears before and after the initial execution gear, wherein N is a positive integer, and selecting the gear corresponding to the lowest oil consumption in the oil consumption as the current execution gear of the current vehicle. Therefore, the accuracy requirement on the decision gear MAP is low, the calibration workload can be greatly reduced, the oil consumption of the initial execution gear and N gears before and after the initial execution gear is only calculated by combining the engine universal characteristic MAP of the current vehicle, the calculation amount is small, the real-time performance is high, the gear value can be adjusted on line according to the current actual working condition, the self-optimization of the vehicle gear is realized, the oil consumption of the vehicle is reduced, and the strategy robustness is good.
Exemplary method
Referring to fig. 1, a flowchart of a vehicle gear adjusting method provided in an embodiment of the present application includes:
s101: acquiring a MAP of the universal characteristics of the engine of the current vehicle; the engine MAP of the present vehicle characterizes a first mapping relationship between different engine speeds and different engine torques of the present vehicle and different engine fuel consumptions of the present vehicle.
In the embodiment of the present application, first, the MAP is a two-dimensional interpolation MAP, and the MAP is a common control algorithm for an engine, in which a desired output can be obtained by interpolating two inputs and internal data. Namely, the MAP shows the mapping relation between the input variable and the output variable, two elements are input, and after internal data interpolation, the output is one element.
For the MAP of the universal engine characteristic of the current vehicle, the MAP is a fuel consumption characteristic MAP based on the engine speed and the torque, and represents the first mapping relation between the different engine speeds and the different engine torques of the current vehicle and the different engine fuel consumptions of the current vehicle, that is, the current engine speed of the current vehicle and the current engine torque of the current vehicle can be input, and the current engine fuel consumption of the current vehicle can be obtained through output.
Referring to fig. 2, an engine universal characteristic MAP of the present vehicle provided in the embodiment of the present application has an abscissa representing the engine speed of the present vehicle, an ordinate representing the engine torque of the present vehicle, and an abscissa and an ordinate representing the engine fuel consumption of the present vehicle as inputs and an output.
The obtaining of the engine universal characteristic MAP of the present vehicle may be integrating the engine universal characteristic MAP of the present vehicle in an ECU (Electronic Control Unit) of the engine for subsequent operation according to the integrated engine universal characteristic MAP.
S102: and inquiring a decision-making gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate and obtain an initial execution gear of the current vehicle, wherein the decision-making gear MAP of the current vehicle represents a second mapping relation between different vehicle speeds and different pedal openings of the current vehicle and different gears of the current vehicle.
In the embodiment of the application, a decision-making gear MAP of the current vehicle can be initialized, the decision-making gear MAP of the current vehicle represents both different vehicle speeds and different pedal openings of the current vehicle, and a second mapping relation between different gears of the current vehicle is obtained, that is, for the decision-making gear MAP of the current vehicle, the current vehicle speed and the current pedal opening of the current vehicle can be input, and the output can be the current corresponding gear of the current vehicle.
Specifically, a decision-making gear MAP of the current vehicle can be obtained through offline preliminary simulation, and the decision-making gear MAP of the current vehicle is written into the ECU, so that in the running process of the vehicle, the decision-making gear MAP of the current vehicle can be queried according to the current vehicle speed and the current pedal opening of the current vehicle, and the initial execution gear of the current vehicle can be obtained through calculation, that is, for the decision-making gear MAP of the current vehicle, the input is two elements, namely, the vehicle speed and the pedal opening, and the output is one element, namely, the execution gear.
S103: calculating according to the first mapping relation and the second mapping relation to obtain oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear respectively; and N is a positive integer.
In the embodiment of the application, the oil consumption corresponding to the initial execution gear and the oil consumption corresponding to the front and rear N gears of the initial execution gear can be calculated according to the first mapping relation and the second mapping relation. For the first mapping relation, the first mapping relation represents the mapping relation between the engine torque and the engine rotating speed and the engine oil consumption; for the second mapping, the second mapping represents a mapping of vehicle speed and pedal opening to a gear of the engine gearbox. The engine gearbox can be an automatic gearbox, namely a whole vehicle gearbox controlled by an electronic control system, and manual gear selection is not needed.
In one possible implementation manner, respective torques corresponding to the initial execution gear and N gears before and after the initial execution gear of the current vehicle can be calculated according to a fourth mapping relationship between the initial execution gear and N gears before and after the initial execution gear of the current vehicle and the engine torque of the current vehicle.
That is, in the embodiment of the present application, the first mapping relationship is a mapping relationship between the characterized engine torque and the characterized engine speed and the engine oil consumption, that is, the input is the engine torque and the engine speed, and the output is the engine oil consumption. In order to obtain the engine torque of the current vehicle, it is therefore necessary to employ a fourth mapping relationship that represents a fourth mapping relationship between the initial execution gear of the current vehicle and N gears before and after the initial execution gear, and the engine torque of the current vehicle.
And inputting the initial execution gear of the current vehicle and N gears before and after the initial execution gear according to the fourth mapping relation, and calculating to obtain each torque corresponding to each gear.
After each torque of the current engine of the current vehicle is obtained, each oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear can be obtained according to the first mapping relation by combining the current engine rotating speed of the current vehicle.
And N is a positive integer, and in a possible implementation mode, N can be 1 so as to improve the real-time performance of the method for adjusting the vehicle gear.
S104: and selecting the gear corresponding to the lowest oil consumption in the oil consumptions as the current execution gear of the current vehicle.
In the embodiment of the application, the gear corresponding to the lowest oil consumption in the oil consumptions can be selected as the current execution gear of the current vehicle, that is, the gear with the lowest oil consumption of the engine is selected as the final execution gear, which indicates that the final execution gear is the gear which saves the most oil under the current working condition and the current road condition of the current vehicle, so that the oil consumption is saved.
In a possible implementation manner, the method provided in the embodiment of the present application further includes:
judging whether the current execution gear is consistent with the initial execution gear;
if not, updating the current executed gear to the decision gear MAP of the current vehicle so as to obtain the decision gear MAP of the current vehicle
And forming a third mapping relation between the current vehicle speed and the current pedal opening of the current vehicle and the current execution gear.
Namely, in the embodiment of the application, the decision gear MAP of the current vehicle can be updated in time, so that the execution gear of the vehicle can be adjusted to the gear with the lowest oil consumption in time, and the lowest oil consumption of the vehicle in the running process is ensured.
The embodiment of the application provides a vehicle gear adjusting method, which comprises the following steps: the method comprises the steps of obtaining an engine universal characteristic MAP of a current vehicle, wherein the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle, inquiring a decision gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate the initial execution gear of the current vehicle, the decision gear MAP of the current vehicle characterizes a second mapping relationship between different vehicle speeds and different pedal openings of the current vehicle and, different gears of the current vehicle, and calculating according to the first mapping relation and the second mapping relation to obtain the oil consumption respectively corresponding to the initial execution gear and N gears before and after the initial execution gear, wherein N is a positive integer, and selecting the gear corresponding to the lowest oil consumption in the oil consumption as the current execution gear of the current vehicle. Therefore, the accuracy requirement on the decision gear MAP is low, the calibration workload can be greatly reduced, the oil consumption of the initial execution gear and N gears before and after the initial execution gear is only calculated by combining the engine universal characteristic MAP of the current vehicle, the calculation amount is small, the real-time performance is high, the gear value can be adjusted on line according to the current actual working condition, the self-optimization of the vehicle gear is realized, the oil consumption of the vehicle is reduced, and the strategy robustness is good.
Exemplary devices
Referring to fig. 3, a schematic diagram of a vehicle gear adjusting device provided in an embodiment of the present application includes:
an obtaining unit 201, configured to obtain an engine universal characteristic MAP of a current vehicle; the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle;
the first calculation unit 202 is configured to query a decision-making gear MAP of the current vehicle according to a current vehicle speed and a current pedal opening of the current vehicle to calculate an initial execution gear of the current vehicle, where the decision-making gear MAP of the current vehicle represents a second mapping relationship between different vehicle speeds and different pedal openings of the current vehicle and different gears of the current vehicle;
the second calculating unit 203 is configured to calculate, according to the first mapping relationship and the second mapping relationship, to obtain oil consumptions corresponding to the initial execution gear and N gears before and after the initial execution gear respectively; n is a positive integer;
and the selecting unit 204 is configured to select a gear corresponding to the lowest oil consumption of the oil consumptions as a current execution gear of the current vehicle.
In one possible implementation, the apparatus further includes:
the judging unit is used for judging whether the current execution gear is consistent with the initial execution gear;
and the updating unit is used for updating the current execution gear into a decision gear MAP of the current vehicle to form a fourth mapping relation between the current vehicle speed and the current pedal opening of the current vehicle and the current execution gear when the current execution gear is inconsistent with the initial execution gear.
In one possible implementation manner, the second computing unit includes:
a first calculating subunit, configured to calculate, according to a third mapping relationship between the initial execution gear of the current vehicle and N gears before and after the initial execution gear, and an engine torque of the current vehicle, respective torques corresponding to the initial execution gear of the current vehicle and N gears before and after the initial execution gear;
and the second calculating subunit is used for calculating to obtain the oil consumptions respectively corresponding to the initial execution gear and N gears before and after the initial execution gear according to the current engine rotating speed of the current vehicle and each torque.
In one possible implementation, N = 1.
The embodiment of the application provides a vehicle gear adjusting device, and a method using the device comprises the following steps: the method comprises the steps of obtaining an engine universal characteristic MAP of a current vehicle, wherein the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle, inquiring a decision gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate the initial execution gear of the current vehicle, the decision gear MAP of the current vehicle characterizes a second mapping relationship between different vehicle speeds and different pedal openings of the current vehicle and, different gears of the current vehicle, and calculating according to the first mapping relation and the second mapping relation to obtain the oil consumption respectively corresponding to the initial execution gear and N gears before and after the initial execution gear, wherein N is a positive integer, and selecting the gear corresponding to the lowest oil consumption in the oil consumption as the current execution gear of the current vehicle. Therefore, the accuracy requirement on the decision gear MAP is low, the calibration workload can be greatly reduced, the oil consumption of the initial execution gear and N gears before and after the initial execution gear is only calculated by combining the engine universal characteristic MAP of the current vehicle, the calculation amount is small, the real-time performance is high, the gear value can be adjusted on line according to the current actual working condition, the self-optimization of the vehicle gear is realized, the oil consumption of the vehicle is reduced, and the strategy robustness is good.
On the basis of the above embodiment, the embodiment of the present application further provides a vehicle gear adjusting system, including:
a memory for storing a computer program;
a processor for implementing the steps of the vehicle gear adjustment method as described above when executing said computer program.
On the basis of the above embodiments, the present application provides a computer storage medium, on which a computer program is stored, and the computer program is processed and executed to implement the steps of the vehicle gear adjusting method as described above.
The computer storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for device embodiments, since they are substantially similar to method embodiments, they are described relatively simply, and reference may be made to some descriptions of the method embodiments for relevant points.
The foregoing is merely a preferred embodiment of the present application and, although the present application discloses the foregoing preferred embodiments, the present application is not limited thereto. Those skilled in the art can now make numerous possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the claimed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still fall within the protection scope of the technical solution of the present application without departing from the content of the technical solution of the present application.
Claims (10)
1. A vehicle gear adjustment method, characterized by comprising:
acquiring a MAP of the universal characteristics of the engine of the current vehicle; the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle;
inquiring a decision-making gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate to obtain an initial execution gear of the current vehicle, wherein the decision-making gear MAP of the current vehicle represents a second mapping relation between different vehicle speeds and different pedal openings of the current vehicle and different gears of the current vehicle;
calculating according to the first mapping relation and the second mapping relation to obtain oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear respectively; n is a positive integer;
and selecting the gear corresponding to the lowest oil consumption in the oil consumptions as the current execution gear of the current vehicle.
2. The method of claim 1, further comprising:
judging whether the current execution gear is consistent with the initial execution gear;
and if the current execution gear is not consistent with the current execution gear, updating the current execution gear to a decision gear MAP of the current vehicle to form a third mapping relation between the current vehicle speed and the current pedal opening of the current vehicle and the current execution gear.
3. The method according to claim 1, wherein the calculating, according to the first mapping relationship and the second mapping relationship, each oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear respectively comprises:
calculating to obtain each torque corresponding to the initial execution gear of the current vehicle and N gears before and after the initial execution gear according to a fourth mapping relation between the initial execution gear of the current vehicle and N gears before and after the initial execution gear and the engine torque of the current vehicle;
and calculating to obtain the oil consumption respectively corresponding to the initial execution gear and N gears before and after the initial execution gear according to the current engine speed of the current vehicle and each torque.
4. The method of claim 1, wherein N = 1.
5. A vehicle gear adjustment device, comprising:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring an engine universal characteristic MAP of a current vehicle; the engine universal characteristic MAP of the current vehicle represents a first mapping relation between different engine speeds and different engine torques of the current vehicle and different engine oil consumptions of the current vehicle;
the first calculation unit is used for inquiring a decision-making gear MAP of the current vehicle according to the current vehicle speed and the current pedal opening of the current vehicle to calculate and obtain an initial execution gear of the current vehicle, wherein the decision-making gear MAP of the current vehicle represents the second mapping relation between different vehicle speeds and different pedal openings of the current vehicle and different gears of the current vehicle;
the second calculation unit is used for calculating and obtaining oil consumption corresponding to the initial execution gear and N gears before and after the initial execution gear according to the first mapping relation and the second mapping relation; n is a positive integer;
and the selection unit is used for selecting the gear corresponding to the lowest oil consumption in the oil consumptions as the current execution gear of the current vehicle.
6. The apparatus of claim 5, further comprising:
the judging unit is used for judging whether the current execution gear is consistent with the initial execution gear;
and the updating unit is used for updating the current execution gear into a decision gear MAP of the current vehicle to form a third mapping relation between the current vehicle speed and the current pedal opening of the current vehicle and the current execution gear when the current execution gear is inconsistent with the initial execution gear.
7. The apparatus of claim 5, wherein the second computing unit comprises:
a first calculating subunit, configured to calculate, according to a fourth mapping relationship between the initial execution gear of the current vehicle and N gears before and after the initial execution gear, and an engine torque of the current vehicle, respective torques corresponding to the initial execution gear of the current vehicle and N gears before and after the initial execution gear;
and the second calculating subunit is used for calculating to obtain the oil consumptions respectively corresponding to the initial execution gear and N gears before and after the initial execution gear according to the current engine rotating speed of the current vehicle and each torque.
8. The apparatus of claim 5, wherein N = 1.
9. A vehicle gear adjustment system, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the vehicle gear adjustment method according to any one of claims 1-4 when executing said computer program.
10. A computer storage medium, characterized in that the computer storage medium has stored thereon a computer program which, when being processed and executed, carries out the steps of the vehicle gear adjustment method according to any one of claims 1 to 4.
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| CN202210318499.5A CN114407871A (en) | 2022-03-29 | 2022-03-29 | Vehicle gear adjusting method, device and system and storage medium |
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