CN112706754B - Hybrid vehicle, engine starting method, and computer-readable storage medium - Google Patents
Hybrid vehicle, engine starting method, and computer-readable storage medium Download PDFInfo
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- CN112706754B CN112706754B CN202110107222.3A CN202110107222A CN112706754B CN 112706754 B CN112706754 B CN 112706754B CN 202110107222 A CN202110107222 A CN 202110107222A CN 112706754 B CN112706754 B CN 112706754B
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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
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
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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
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
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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
- B60W2510/02—Clutches
- B60W2510/0275—Clutch 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
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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
- B60W2710/02—Clutches
- B60W2710/027—Clutch torque
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses an engine starting method of a hybrid vehicle, which comprises the following steps: acquiring the continuous starting time length of an engine and the torque to be output by a clutch; correcting the torque according to the continuous starting time length to obtain a target torque; and controlling the clutch to output the target torque. The invention also discloses a hybrid vehicle and a computer-readable storage medium. The invention ensures the starting drivability of the hybrid vehicle.
Description
Technical Field
The present invention relates to the field of vehicle engine technology, and in particular, to a hybrid vehicle, an engine starting method, and a computer-readable storage medium.
Background
The hybrid electric vehicle has the advantages of long continuous working time of the engine, good power performance, no pollution of the motor and low noise, and the hybrid electric vehicle is more and more popularized due to the advantages.
The starting of the engine is an important part of the control of the hybrid vehicle. Currently, the starting of the engine is realized by means of the torque output by the clutch, and the torque output by the clutch is output according to a preset curve, namely the torque output by the clutch is fixed. With the use of the hybrid vehicle, the static drag torque of the engine and the transmission characteristic of the clutch may change, and the clutch outputs a fixed torque, which may cause the engine to fail to start, so that the hybrid vehicle needs to start the engine several times, resulting in poor starting drivability of the hybrid vehicle.
Disclosure of Invention
A primary object of the present invention is to provide a hybrid vehicle, an engine starting method, and a computer-readable storage medium, which aim at the problem of poor starting drivability of the hybrid vehicle.
To achieve the above object, the present invention provides an engine starting method of a hybrid vehicle, characterized by comprising:
acquiring the continuous starting time of an engine and the torque to be output by a clutch;
correcting the torque according to the continuous starting time to obtain a target torque;
and controlling the clutch to output the target torque.
In one embodiment, the step of correcting the torque to obtain the target torque according to the continuous start duration comprises:
judging whether the continuous starting time length is less than or equal to the lower limit value of the starting time length or not;
when the continuous starting time is less than or equal to the lower limit value, reducing the torque to obtain a target torque;
when the continuous starting time length is greater than or equal to the upper limit value of the starting time length, increasing the torque to obtain a target torque;
and determining the torque as a target torque when the continuous starting time is greater than the lower limit value and less than the upper limit value.
In one embodiment, the step of reducing the torque to obtain the target torque comprises:
determining a difference between the upper limit value and the lower limit value;
and determining a first correction value according to the difference value, and reducing the torque according to the first correction value to obtain a target torque.
In one embodiment, the step of increasing the torque to obtain the target torque comprises:
determining a difference between the upper limit value and the lower limit value;
and determining a second correction value according to the difference value, and increasing the torque according to the second correction value to obtain a target torque.
In one embodiment, the step of obtaining the torque to be output by the clutch includes:
determining a current water temperature of the engine;
and determining the torque to be output by the clutch according to the current water temperature.
In one embodiment, the step of determining the torque to be output by the clutch according to the current water temperature includes:
determining whether torque corresponding to the current water temperature is included in a preset relation table, wherein the preset relation table is a relation table between the water temperature of an engine and the torque to be output of a clutch;
when the preset relation table comprises the torque corresponding to the current water temperature, determining the torque corresponding to the current water temperature as the torque to be output by the clutch;
And when the torque corresponding to the current water temperature is not included in the preset relation table, acquiring two target water temperatures adjacent to the current water temperature in the preset relation table, and determining the torque to be output by the clutch according to the torque corresponding to each target water temperature.
In one embodiment, the step of determining the torque to be output by the clutch according to the torque corresponding to each target water temperature includes:
determining a linear relation between the water temperature and the torque according to the target water temperatures and the torque corresponding to each target water temperature;
and determining the torque to be output of the clutch according to the linear relation and the current water temperature.
In one embodiment, after the step of controlling the clutch to output the target torque, the method further includes:
and storing the target torque and the continuous starting time length in a correlated mode.
To achieve the above object, the present invention also provides a hybrid vehicle including a memory, a processor, and a start-up program stored in the memory and executable on the processor, the start-up program, when executed by the processor, implementing the steps of the engine starting method of the hybrid vehicle as described above.
To achieve the above object, the present invention also provides a computer-readable storage medium storing a startup program, which when executed by a processor, performs the steps of the engine starting method for a hybrid vehicle as described above.
According to the hybrid vehicle, the engine starting method and the computer readable storage medium, the hybrid vehicle obtains the continuous starting time of the engine and the torque to be output by the clutch, corrects the torque according to the continuous starting time to obtain the target torque, and then controls the clutch to output the target torque. The hybrid power vehicle corrects the torque to be output by the clutch based on the continuous starting time of the engine, namely reasonably controls the output torque of the clutch based on the continuous starting time of the engine, reduces the probability of the starting failure of the engine and ensures the starting drivability of the hybrid power vehicle.
Drawings
Fig. 1 is a schematic hardware configuration diagram of a hybrid vehicle according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a first embodiment of an engine starting method of a hybrid vehicle according to the present invention;
FIG. 3 is a graph showing the relationship between the duration of the engine start and the torque to be output from the clutch in accordance with the present invention;
FIG. 4 is a flowchart illustrating an engine starting method of a hybrid vehicle according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating an engine starting method of a hybrid vehicle according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The main solution of the embodiment of the invention is as follows: acquiring the continuous starting time length of an engine and the torque to be output by a clutch; correcting the torque according to the continuous starting time length to obtain a target torque; and controlling the clutch to output the target torque.
The hybrid power vehicle corrects the torque to be output by the clutch based on the continuous starting time of the engine, namely reasonably controls the output torque of the clutch based on the continuous starting time of the engine, reduces the probability of the starting failure of the engine and ensures the starting drivability of the hybrid power vehicle.
Referring to fig. 1, fig. 1 is a schematic diagram of a hardware configuration of a hybrid vehicle according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention relates to a hybrid vehicle, which may include: a processor 101, e.g. a CPU, a communication bus 102, a memory 103. Wherein the communication bus 102 is used for enabling connection communication between these components. The memory 103 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 103 may alternatively be a storage device separate from the aforementioned processor 101. Those skilled in the art will appreciate that the configuration shown in FIG. 1 does not constitute a limitation of hybrid vehicles, and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a boot program may be included in the memory 103, which is a kind of computer storage medium.
In the apparatus shown in fig. 1, the processor 101 may be configured to call a boot program stored in the memory 103 and perform the following operations:
acquiring the continuous starting time length of an engine and the torque to be output by a clutch;
Correcting the torque according to the continuous starting time length to obtain a target torque;
and controlling the clutch to output the target torque.
In one embodiment, the processor 101 may call a boot program stored in the memory 103, and further perform the following operations:
judging whether the continuous starting time length is less than or equal to the lower limit value of the starting time length or not;
when the continuous starting time is less than or equal to the lower limit value, reducing the torque to obtain a target torque;
when the continuous starting time length is greater than or equal to the upper limit value of the starting time length, increasing the torque to obtain a target torque;
and determining the torque as a target torque when the continuous starting time is greater than the lower limit value and less than the upper limit value.
In one embodiment, the processor 101 may call a boot program stored in the memory 103, and further perform the following operations:
determining a difference between the upper limit value and the lower limit value;
and determining a first correction value according to the difference value, and reducing the torque according to the first correction value to obtain a target torque.
In one embodiment, the processor 101 may call a boot program stored in the memory 103, and further perform the following operations:
determining a difference between the upper limit value and the lower limit value;
And determining a second correction value according to the difference value, and increasing the torque according to the second correction value to obtain a target torque.
In one embodiment, the processor 101 may call a boot program stored in the memory 103, and further perform the following operations:
determining a current water temperature of the engine;
and determining the torque to be output by the clutch according to the current water temperature.
In one embodiment, the processor 101 may call a boot program stored in the memory 103, and further perform the following operations:
determining whether a preset relation table comprises torque corresponding to the current water temperature, wherein the preset relation table is a relation table between the water temperature of an engine and the torque to be output of a clutch;
when the preset relation table comprises the torque corresponding to the current water temperature, determining the torque corresponding to the current water temperature as the torque to be output by the clutch;
and when the torque corresponding to the current water temperature is not included in the preset relation table, acquiring two target water temperatures adjacent to the current water temperature in the preset relation table, and determining the torque to be output by the clutch according to the torque corresponding to each target water temperature.
In one embodiment, the processor 101 may call a boot program stored in the memory 103, and further perform the following operations:
Determining a linear relation between the water temperature and the torque according to the target water temperatures and the torque corresponding to each target water temperature;
and determining the torque to be output of the clutch according to the linear relation and the current water temperature.
In one embodiment, the processor 101 may call a boot program stored in the memory 103, and further perform the following operations:
and storing the target torque and the continuous starting time length in a correlated mode.
According to the scheme, the hybrid vehicle obtains the continuous starting time length of the engine and the torque to be output by the clutch, corrects the torque according to the continuous starting time length to obtain the target torque, and then controls the clutch to output the target torque. The hybrid power vehicle corrects the torque to be output by the clutch based on the continuous starting time of the engine, namely reasonably controls the output torque of the clutch based on the continuous starting time of the engine, reduces the probability of the starting failure of the engine and ensures the starting drivability of the hybrid power vehicle.
An embodiment of the engine starting method of the hybrid vehicle of the invention is proposed based on the hardware architecture of the hybrid vehicle described above.
Referring to fig. 2, fig. 2 is a first embodiment of an engine starting method of a hybrid vehicle of the present invention, which includes the steps of:
Step S10, acquiring the continuous starting time length of the engine and the torque to be output by the clutch;
in the present embodiment, a hybrid vehicle includes a hybrid architecture including an engine, a motor, and a transmission. The engine needs to be started by the driving of the motor, and the motor is started by the torque output by the clutch.
When the hybrid vehicle just starts to start the engine, the timing is started to obtain the continuous starting time length of the engine. When the engine is started, the corresponding torque output by the clutch is provided, and the torque is the torque to be output by the clutch. The torque may be determined according to a duration of the engine start. Specifically, referring to FIG. 3, the relationship between the torque to be output by the clutch and the duration of the engine start may be characterized by a curve, which may be referenced in FIG. 3. The curve may be characterized by a formula, and the vehicle (hereinafter referred to as a hybrid vehicle) determines the torque to be output by the clutch based on the duration of the sustained start and the formula.
Step S20, correcting the torque according to the continuous starting time length to obtain a target torque;
after the vehicle obtains the continuous starting time length and the torque, the torque is corrected according to the continuous starting time length to obtain the target torque. Specifically, when the continuous starting time of the engine is shorter than the first preset time, that is, the continuous starting time is shorter, the torque is reduced to obtain the target torque, because the static torque of the engine is larger when the engine just enters the starting stage, and the clutch torque is too large to cause damage to the engine and the clutch, so that the clutch outputs a smaller torque when the continuous starting time is shorter.
And when the continuous starting time length of the engine is greater than a second preset time length (the second preset time length is greater than or equal to the first preset time length), namely the continuous starting time length is increased, the torque is increased to obtain the target torque. This is because the engine should not be started too long, and therefore, the torque output from the clutch needs to be increased.
And step S30, controlling the clutch to output the target torque.
When the vehicle determines the target torque, the clutch can be controlled to output the target torque. Further, after the target torque is determined by the vehicle, the target torque and the continuous start time period are stored in association, so that the next time the vehicle starts the engine, the target torque is extracted based on the continuous start time period, and the clutch is controlled to output the target torque. It is to be understood that, when the engine is started, the vehicle first determines whether the continuous start time period and the target torque are stored, and if not, the steps S10-S30 are executed. And if the incidence relation between the continuous starting time length and the target torque is stored, directly acquiring the target torque based on the continuous starting time length, and then controlling the clutch to output the target torque.
In the technical scheme provided by the embodiment, the hybrid vehicle acquires the continuous starting time length of the engine and the torque to be output by the clutch, corrects the torque according to the continuous starting time length to obtain the target torque, and then controls the clutch to output the target torque. The hybrid power vehicle corrects the torque to be output by the clutch based on the continuous starting time of the engine, namely reasonably controls the output torque of the clutch based on the continuous starting time of the engine, reduces the probability of the starting failure of the engine and ensures the starting drivability of the hybrid power vehicle.
Referring to fig. 4, fig. 4 shows a second embodiment of the engine starting method of the hybrid vehicle according to the present invention, wherein the step S20 includes:
step S21, judging whether the continuous starting time length is less than or equal to the lower limit value of the starting time length;
step S22, when the continuous starting time is less than or equal to the lower limit value, reducing the torque to obtain a target torque;
step S23, when the continuous starting time is larger than or equal to the upper limit value of the starting time, increasing the torque to obtain a target torque;
and step S24, determining the torque as a target torque when the continuous starting time is greater than the lower limit value and less than the upper limit value.
In the present embodiment, the vehicle is provided with an upper limit value and a lower limit value of the start-up period of the engine. The upper limit value and the lower limit value can be obtained by big data analysis. Specifically, the internet of vehicles acquires the minimum duration required by starting the engines of the multiple hybrid vehicles with the same model, and then counts the minimum duration with the largest number to serve as the lower limit value of the starting duration of the engines. The Internet of vehicles obtains the longest time required by starting of engines with the same type in a plurality of hybrid vehicles, and then statistics is carried out to obtain the longest time with the largest number as the upper limit value of the starting time of the engines. The vehicle generates an acquisition instruction of an upper limit value and a lower limit value based on the model of the engine, the vehicle networking analyzes the acquisition instruction to obtain the model of the engine, and then the upper limit value and the lower limit value corresponding to the model are sent to the vehicle, so that the vehicle is stored.
And after the vehicle obtains the continuous starting time length, judging whether the continuous starting time length is less than or equal to the lower limit value of the starting time length. And if the continuous starting time is less than or equal to the lower limit value, reducing the torque to obtain the target torque. It should be noted that the amount of torque reduction is related to the difference between the upper and lower limits of the start-up period. Specifically, the vehicle determines a difference between the upper limit value and the lower limit value, and determines a first correction value corresponding to the difference based on a first mapping relationship between the difference and the correction value, so that the torque is reduced by the first correction value to obtain the target torque.
And if the continuous starting time is greater than or equal to the upper limit value, increasing the torque to obtain the target torque. It should be noted that the amount of increase in torque is related to the difference between the upper and lower limits of the starting period. Specifically, the vehicle determines a difference between the upper limit value and the lower limit value, and determines a second correction value corresponding to the difference based on a second mapping relationship between the difference and the correction value, so that the target torque is obtained by increasing the torque by the second correction value.
When the continuous starting time is longer than the lower limit value and shorter than the upper limit value, the torque can be used as the target torque.
In the technical scheme provided by the embodiment, when the vehicle determines that the continuous starting time of the generator is less than or equal to the lower limit value of the starting time, the torque to be output by the clutch is reduced to obtain the target torque; if the starting time is greater than or equal to the upper limit value of the starting time, increasing the torque to be output by the clutch to obtain a target torque; and if the starting time is less than the upper limit value and greater than the lower limit value, keeping the torque unchanged.
Referring to fig. 5, fig. 5 shows a third embodiment of the engine starting method of the hybrid vehicle according to the present invention, wherein the step S10 includes:
step S11, determining the current water temperature of the engine;
and step S12, determining the torque to be output by the clutch according to the current water temperature.
In the present embodiment, the torque to be output by the clutch may be determined based on the water temperature of the engine. Specifically, the vehicle determines the current water temperature of the engine, and determines the torque to be output by the clutch corresponding to the current water temperature based on the mapping relation between the water temperature and the torque. Further, a preset relationship table, which is a relationship table of a water temperature of the engine and a torque output by the clutch, is stored in the vehicle. The preset relation table only contains partial water temperature and torque. Therefore, the vehicle obtains the current water temperature of the engine through the temperature sensor, and then determines whether the preset relation table comprises the torque corresponding to the current water temperature. And if the preset relation table comprises the torque corresponding to the current water temperature, determining the torque corresponding to the current water temperature as the torque to be output by the clutch.
When the torque corresponding to the current water temperature is not included in the preset relation table, two target water temperatures adjacent to the current water temperature are obtained in the preset relation table, namely one target water temperature which is smaller than the current water temperature and is adjacent to the current water temperature is obtained from the table, and the other target water temperature which is larger than the current water temperature and is adjacent to the current water temperature is obtained from the table, so that the torque to be output by the clutch is determined based on the torque corresponding to each target water temperature. The torque to be output of the clutch is determined based on the torque corresponding to each target water temperature, and the torque to be output of the clutch can be obtained by obtaining the current water temperature through linear interpolation. Specifically, the vehicle determines the torque corresponding to two target water temperatures and each target water temperature, and the linear relation between the water temperature and the torque, and then determines the torque to be output of the clutch based on the linear relation and the current water temperature, that is, the current water temperature is input into the linear relation to obtain the torque to be output of the clutch.
In the technical scheme provided by the embodiment, the vehicle determines the current water temperature of the engine, so that the torque to be output by the clutch is accurately determined according to the current water temperature.
The invention also provides a hybrid vehicle comprising a memory, a processor and a start-up program stored in the memory and executable on the processor, the start-up program, when executed by the processor, implementing the steps of the engine starting method of the hybrid vehicle as described in the above embodiments.
The present invention also provides a computer-readable storage medium storing a startup program that, when executed by a processor, performs the steps of the engine starting method of the hybrid vehicle described in the above embodiment.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. 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 (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. An engine starting method of a hybrid vehicle, characterized by comprising the steps of:
Acquiring the continuous starting time length of an engine and the torque to be output by a clutch;
correcting the torque according to the continuous starting time to obtain a target torque;
controlling the clutch to output the target torque;
the step of correcting the torque according to the continuous starting time length to obtain the target torque comprises the following steps:
judging whether the continuous starting time length is less than or equal to the lower limit value of the starting time length or not;
when the continuous starting time is less than or equal to the lower limit value, reducing the torque to obtain a target torque;
when the continuous starting time length is greater than or equal to the upper limit value of the starting time length, increasing the torque to obtain a target torque;
and determining the torque as a target torque when the continuous starting time is greater than the lower limit value and less than the upper limit value.
2. An engine starting method of a hybrid vehicle according to claim 1, wherein said step of reducing said torque to obtain a target torque comprises:
determining a difference between the upper limit value and the lower limit value;
and determining a first correction value according to the difference value, and reducing the torque according to the first correction value to obtain a target torque.
3. An engine starting method of a hybrid vehicle according to claim 1, wherein said step of increasing said torque to obtain a target torque comprises:
Determining a difference between the upper limit value and the lower limit value;
and determining a second correction value according to the difference value, and increasing the torque according to the second correction value to obtain a target torque.
4. The engine starting method of a hybrid vehicle according to claim 1, wherein the step of obtaining the torque to be output by the clutch comprises:
determining a current water temperature of the engine;
and determining the torque to be output by the clutch according to the current water temperature.
5. An engine starting method of a hybrid vehicle according to claim 4, wherein the step of determining the torque to be output of the clutch based on the current water temperature includes:
determining whether a preset relation table comprises torque corresponding to the current water temperature, wherein the preset relation table is a relation table between the water temperature of an engine and the torque to be output of a clutch;
when the preset relation table comprises the torque corresponding to the current water temperature, determining the torque corresponding to the current water temperature as the torque to be output by the clutch;
and when the torque corresponding to the current water temperature is not included in the preset relation table, acquiring two target water temperatures adjacent to the current water temperature in the preset relation table, and determining the torque to be output by the clutch according to the torque corresponding to each target water temperature.
6. An engine starting method of a hybrid vehicle according to claim 5, wherein the step of determining the torque to be output of the clutch based on the torque corresponding to each of the target water temperatures includes:
determining a linear relation between the water temperature and the torque according to the target water temperatures and the torque corresponding to each target water temperature;
and determining the torque to be output of the clutch according to the linear relation and the current water temperature.
7. An engine starting method of a hybrid vehicle according to any one of claims 1 to 6, characterized in that after the step of controlling the clutch to output the target torque, further comprising:
and storing the target torque and the continuous starting time length in a correlated mode.
8. A hybrid vehicle, characterized in that the hybrid vehicle comprises a memory, a processor and a start-up program stored in the memory and executable on the processor, the start-up program, when executed by the processor, implementing the steps of the engine starting method of the hybrid vehicle as recited in any one of claims 1 to 7.
9. A computer-readable storage medium storing a startup program which, when executed by a processor, causes the respective steps of the engine starting method of a hybrid vehicle according to any one of claims 1 to 7 to be performed.
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