CN117627798B - Control method and control system of extended-range engine, extended-range engine and vehicle - Google Patents

Control method and control system of extended-range engine, extended-range engine and vehicle Download PDF

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Publication number
CN117627798B
CN117627798B CN202410112214.1A CN202410112214A CN117627798B CN 117627798 B CN117627798 B CN 117627798B CN 202410112214 A CN202410112214 A CN 202410112214A CN 117627798 B CN117627798 B CN 117627798B
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China
Prior art keywords
engine
extended
range
temperature
range engine
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CN202410112214.1A
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CN117627798A (en
Inventor
周胜余
李志杰
陈月春
王启峰
刘伟鹏
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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Priority to CN202410112214.1A priority Critical patent/CN117627798B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/068—Introducing corrections for particular operating conditions for engine starting or warming up for warming-up
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/023—Temperature of lubricating oil or working fluid

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The application provides a control method and a control system of an extended-range engine, the extended-range engine and a vehicle, wherein the control method comprises the following steps: if the extended-range engine is in a flameout state, the viscosity of the engine oil is obtained, if the viscosity of the engine oil is smaller than the preset viscosity, the extended-range engine is judged to meet a first starting condition, the extended-range engine is controlled to start so as to heat the engine oil, then the temperature of the engine oil is obtained, and after the temperature of the engine oil is larger than the first preset temperature, the extended-range engine is controlled to flameout, wherein the first preset temperature is the temperature at which water can be separated from the engine oil. Therefore, the control method controls the start and stop of the extended range engine by monitoring the viscosity of the engine oil, and separates the water in the engine oil from the engine oil, so that the emulsification of the engine oil can be inhibited, and the safe and reliable operation of the engine can be ensured.

Description

Control method and control system of extended-range engine, extended-range engine and vehicle
Technical Field
The application relates to the technical field of extended-range engines, in particular to a control method and a control system of an extended-range engine, the extended-range engine and a vehicle.
Background
With the development of society, the use of less and less petroleum resources by engines and the current implementation of low-carbon environmental protection policies make it imperative to develop engines using alternative fuels and low carbon, wherein engines using methanol fuels have begun to be popularized in the market. Because the methanol producing areas are distributed in mines and peripheral areas thereof, the price of methanol in the areas is relatively low compared with other areas, thus providing a fuel source with relatively high cost for mining vehicles, and the methanol mine cars use a methanol range-increasing engine.
Because the charging time of the extended-range engine is uncertain in the actual working condition, the irregular starting and stopping time of the extended-range engine is caused, if the starting and stopping time interval of the engine is longer, the temperature of engine oil is reduced, water vapor which is leaked from a piston to a crankcase is condensed, the water vapor is mixed with the engine oil to cause the emulsification of the engine oil, and the operation of the engine is greatly influenced.
Disclosure of Invention
In view of the above, the application provides a control method of an engine in city increasing, which comprises the following steps:
A control method of an extended-range engine for charging a power battery, the control method comprising:
Determining whether the extended range engine is in a flameout state;
If yes, judging whether the extended-range engine meets a first starting condition; wherein determining whether the extended-range engine satisfies the first start condition includes:
Obtaining the viscosity of engine oil;
If the engine oil viscosity is smaller than the preset viscosity, judging that the extended-range engine meets a first starting condition;
When the extended-range engine meets a first starting condition, controlling the extended-range engine to start, and heating engine oil;
acquiring the temperature of engine oil in the starting operation process of the extended range engine;
And when the temperature of the engine oil is higher than a first preset temperature, controlling the extended range engine to flameout.
Optionally, the control method further includes:
if the extended-range engine is in a flameout state, judging whether the extended-range engine meets a second starting condition, wherein judging whether the extended-range engine meets the second starting condition comprises the following steps:
acquiring the temperature of engine oil;
acquiring an ambient temperature;
If the engine oil temperature is smaller than a second preset temperature and the environment temperature is smaller than a third preset temperature, judging that the extended-range engine meets a second starting condition;
when the extended-range engine meets at least one of the first starting condition and the second starting condition, controlling the extended-range engine to start, and heating engine oil;
acquiring the engine oil temperature in the starting operation process of the extended-range engine;
And when the temperature of the engine oil is higher than the first preset temperature, controlling the extended-range engine to stop.
Optionally, when the extended-range engine is determined to meet the first starting condition but not meet the second starting condition, after the engine oil temperature is greater than the first preset temperature, controlling the extended-range engine to stall includes:
and when the temperature of the engine oil is higher than the first preset temperature, controlling the engine to run for a first preset time, and then controlling the extended-range engine to stop.
Optionally, when the extended-range engine is determined to meet the second starting condition, after the engine oil temperature is greater than the first preset temperature, controlling the extended-range engine to stop includes:
When the temperature of the engine oil is higher than the first preset temperature, controlling the engine to run for a second preset time, and then controlling the extended-range engine to stop;
The second preset time is longer than the first preset time.
Optionally, the control method further includes:
Acquiring the electric quantity of the power battery;
if the electric quantity of the power battery is smaller than the first set electric quantity, controlling the extended range engine to start so as to charge the power battery;
acquiring the electric quantity of the power battery in the charging process of the power battery;
If the electric quantity of the power battery is larger than the second set electric quantity, controlling the extended range engine to stop extinguishing, and stopping charging the power battery;
wherein the second set electrical quantity is larger than the first set electrical quantity.
A control system for controlling start-stop of an extended range engine and the extended range engine for charging a power battery, the control system comprising:
The judging module is used for determining whether the extended-range engine is in a flameout state or not;
The first sensor is used for acquiring the viscosity of engine oil when the extended range engine is determined to be in a flameout state; after the engine oil viscosity is obtained, the judging module is further used for judging whether the extended-range engine meets a first starting condition according to the engine oil viscosity, and if the engine oil viscosity is smaller than a preset viscosity, the judging module judges that the extended-range engine meets the first starting condition;
The control module is used for controlling the start of the extended-range engine to heat engine oil when judging that the extended-range engine meets a first starting condition;
The second sensor is used for acquiring the engine oil temperature in the starting operation process of the extended range engine; and when the temperature of the engine oil is higher than a first preset temperature, the control module is also used for controlling the extended range engine to flameout.
Optionally, the control system further comprises:
the third sensor is used for acquiring the engine oil temperature when the extended-range engine is in a flameout state;
a fourth sensor for acquiring an ambient temperature;
The judging module is further configured to judge whether the extended-range engine meets a second starting condition according to the engine oil temperature and the ambient temperature, and if the engine oil temperature is less than a second preset temperature and the ambient temperature is less than a third preset temperature, judge that the extended-range engine meets the second starting condition.
Optionally, the control system further comprises:
The electric quantity module is used for acquiring the electric quantity of the power battery;
If the electric quantity of the power battery is smaller than the first set electric quantity, the control module controls the extended range engine to start so as to charge the power battery; if the electric quantity of the power battery is the second set electric quantity, the control module controls the extended range engine to flameout and stops charging the power battery;
wherein the second set electrical quantity is larger than the first set electrical quantity.
An extended range engine comprising a control system as in any one of the embodiments above.
A vehicle, the vehicle comprising: the system comprises an extended range engine and a power battery, wherein the extended range engine is used for charging the power battery;
Wherein the extended range engine comprises the control system of any of the above embodiments.
Compared with the prior art, the technical scheme of the application has the beneficial effects that:
The control method provided by the application comprises the following steps: if the extended-range engine is in a flameout state, the viscosity of the engine oil is obtained, if the viscosity of the engine oil is smaller than the preset viscosity, the extended-range engine is judged to meet a first starting condition, the extended-range engine is controlled to start so as to heat the engine oil, then the temperature of the engine oil is obtained, and after the temperature of the engine oil is larger than the first preset temperature, the extended-range engine is controlled to flameout, wherein the first preset temperature is the temperature at which water can be separated from the engine oil. Therefore, the control method controls the start and stop of the extended range engine by monitoring the viscosity of the engine oil, and separates the water in the engine oil from the engine oil, so that the emulsification of the engine oil can be inhibited, and the safe and reliable operation of the engine can be ensured.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings required for the description of the embodiments or the prior art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the provided drawings without inventive effort to those skilled in the art.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the application, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the application, without affecting the effect or achievement of the objective.
FIG. 1 is a flow chart of a control method of an extended range engine provided by the application;
FIG. 2 is a flow chart of another method for controlling an extended range engine according to the present application;
FIG. 3 is a flow chart of a control method of an extended range engine according to another embodiment of the present application;
FIG. 4 is a flow chart of a control method of an extended range engine according to another embodiment of the present application;
fig. 5 is a schematic structural diagram of an extended-range engine according to the present application.
Detailed Description
Embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, that the embodiments shown are merely exemplary, and not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description.
As described in the background art, the extended-range engine has the problem of uncertain charging time in actual working conditions, if the engine is started and stopped for a long time, the temperature of engine oil is reduced, so that water vapor flowing from a piston into a crankcase is condensed, and the water vapor is mixed with engine oil to cause emulsification of the engine oil, thereby greatly affecting the operation of the engine.
Based on this, the application provides a control method of an extended-range engine for charging a power battery. As shown in fig. 1, fig. 1 is a flowchart of a control method of an extended-range engine according to the present application, where the control method includes:
S1: determining whether the extended range engine is in a flameout state, i.e., determining whether the extended range engine is in a shutdown state.
S11: if yes, judging whether the extended-range engine meets a first starting condition. As shown in fig. 2, fig. 2 is a flowchart of a control method of an extended-range engine according to the present application, and determining whether the extended-range engine meets the first starting condition includes:
S111: and obtaining the engine oil viscosity, namely obtaining the engine oil viscosity of the extended-range engine.
S112: and if the viscosity of the engine oil is smaller than the preset viscosity, judging that the extended-range engine meets a first starting condition.
S12: and when the extended-range engine meets the first starting condition, controlling the extended-range engine to start so as to heat engine oil.
S13: the engine oil temperature is obtained during the start-up operation of the extended-range engine, that is, during the start-up operation of the extended-range engine in which the first start condition is satisfied.
S14: and when the temperature of the engine oil is higher than a first preset temperature, controlling the extended range engine to flameout. Wherein the first preset temperature is a temperature at which water can be separated from the engine oil.
When the oil is mixed with condensed water vapor from the piston train to the crankcase, the oil is emulsified, and the viscosity of the oil is lowered after the oil is emulsified. Therefore, the control method comprises the steps of obtaining the viscosity of the engine oil, judging that the range-extended engine meets a first starting condition when the viscosity of the engine oil is smaller than a preset viscosity, starting the range-extended engine to heat the engine oil, and improving the temperature of the engine oil until the temperature of the engine oil is larger than the temperature at which water can be separated from the engine oil, so that water in the engine oil can be separated from the engine oil. Therefore, the control method controls the start and stop of the extended range engine by monitoring the viscosity of the engine oil, and separates the water in the engine oil from the engine oil, so that the emulsification of the engine oil can be inhibited, and the safe and reliable operation of the engine can be ensured.
It should be noted that, the water vapor that is blown into the crankcase from the piston condenses, and is also related to the oil temperature of the extended-range engine and the ambient temperature where the extended-range engine is located, if the oil temperature of the extended-range engine and the ambient temperature where the extended-range engine is located are lower, the water vapor that is blown into the crankcase from the piston condenses more easily, and the probability of emulsifying the oil is also greater. Therefore, in one embodiment of the present application, as shown in fig. 3, fig. 3 is a flowchart of a control method of an extended-range engine provided by the present application, where the control method further includes:
S21: if the extended-range engine is in a flameout state, judging whether the extended-range engine meets a second starting condition. As shown in fig. 4, fig. 4 is a flowchart of a control method of an extended-range engine according to the present application, and determining whether the extended-range engine meets a second starting condition includes:
s211: and obtaining the engine oil temperature, namely obtaining the engine oil temperature of the extended-range engine.
S212: and obtaining the ambient temperature, namely obtaining the temperature of the environment where the extended range engine is located.
S213: and if the engine oil temperature is smaller than a second preset temperature and the environment temperature is smaller than a third preset temperature, judging that the extended-range engine meets a second starting condition.
S22: and controlling the extended-range engine to start and heat engine oil when the extended-range engine meets at least one of the first starting condition and the second starting condition.
S23: and acquiring the engine oil temperature in the starting operation process of the extended-range engine.
S24: and when the temperature of the engine oil is higher than the first preset temperature, controlling the extended range engine to flameout so as to stop heating the engine oil.
According to the control method provided by the application, the start and stop of the extended range engine are controlled through the engine oil temperature and the environment temperature, and when the engine oil temperature and the environment temperature are lower, the engine oil is heated, so that the engine oil emulsification is inhibited, and the safe and reliable operation of the engine is ensured.
Further, as is apparent from the above, the control method controls the extended-range engine to start when the extended-range engine satisfies at least one of the first start condition and the second start condition, so as to warm up the engine oil, that is, the control method controls the extended-range engine to start when the extended-range engine satisfies both the first start condition and the second start condition, and also starts the extended-range engine when the extended-range engine satisfies either the first start condition or the second start condition. Therefore, the control method comprehensively considers the influence of various factors on the oil emulsification, so that the problem of oil emulsification can be more comprehensively inhibited, the oil emulsification is further inhibited, and the safe and reliable operation of the engine is ensured.
On the basis of the above embodiment, in one embodiment of the present application, when it is determined that the extended-range engine satisfies the first start condition but does not satisfy the second start condition, after the engine oil temperature is greater than the first preset temperature, controlling the extended-range engine to stop includes:
and when the temperature of the engine oil is higher than the first preset temperature, controlling the engine to run for a first preset time, and then controlling the extended-range engine to stop.
In another embodiment of the present application, when it is determined that the extended-range engine satisfies both the first start condition and the second start condition, after the oil temperature is greater than the first preset temperature, controlling the extended-range engine to stall includes:
and when the temperature of the engine oil is higher than the first preset temperature, controlling the engine to run for a second preset time, and then controlling the extended-range engine to stop.
Wherein the second preset time is longer than the first preset time.
It should be noted that, even if the oil temperature reaches the temperature required for the separation of water from the oil, the separation of water from the oil still requires a period of time during which the oil temperature needs to be maintained at a temperature higher than the temperature required for the separation of water from the oil. Therefore, when the temperature of the engine oil is higher than the first preset temperature, the control method provided by the application controls the engine to run for a second preset time, and then controls the extended range engine to flameout so as to ensure that water is separated from the engine oil as much as possible, thereby inhibiting the emulsification of the engine oil.
It should be noted that, it is known that the water vapor that is blown from the piston into the crankcase condenses, and is also related to the temperature of the engine oil of the extended-range engine and the temperature of the environment in which the extended-range engine is located, if the temperature of the engine oil of the extended-range engine and the temperature of the environment in which the extended-range engine is located are lower, the water vapor that is blown from the piston into the crankcase is more likely to condense, so that when the temperature of the engine oil of the extended-range engine and the temperature of the environment in which the extended-range engine is located are lower, more water is present in the engine oil, which also results in more time required for separating the water from the engine oil. Therefore, when the control method judges that the extended-range engine meets the second starting condition, after the temperature of the engine oil is higher than the first preset temperature, the engine is controlled to run for a longer time, and then the extended-range engine is controlled to flameout, so that the separation of water from the engine oil is ensured as much as possible, and the emulsification of the engine oil is inhibited.
Because the extended-range engine is used for charging the power battery, the start and stop of the extended-range engine are also related to the electric quantity of the power battery. Thus, in one embodiment of the application, the control method further comprises:
and acquiring the electric quantity of the power battery.
And if the electric quantity of the power battery is smaller than the first set electric quantity, controlling the extended range engine to start so as to charge the power battery.
And acquiring the electric quantity of the power battery in the charging process of the power battery.
And if the electric quantity of the power battery is the second set electric quantity, controlling the extended range engine to stop extinguishing, and stopping charging the power battery.
Wherein the second set electrical quantity is larger than the first set electrical quantity. The first set electric quantity is the lower electric quantity limit value of the power battery, when the electric quantity of the power battery is lower than the lower electric quantity limit value, the power battery is required to be charged, and at the moment, the range-extending engine is controlled to start to charge the power battery. The second set electric quantity is the electric quantity upper limit value of the electric quantity battery, when the electric quantity of the power battery is the upper limit value, the power battery is completely charged, or the electric quantity is sufficient and the charging is not needed, and the extended range engine is controlled to stop or maintain the stop state.
The above-mentioned steps of obtaining the viscosity of the engine oil, the temperature of the engine oil, and the ambient temperature to control the start of the extended range engine, and then heating the engine oil are performed when the extended range engine is kept in a stopped state under the condition that the battery is charged or the electric quantity is sufficient and no charging is required. When the engine is controlled to start to heat engine oil, the engine is in a constant-speed running state so as to save oil consumption.
It should be noted that if the oil ages, its viscosity will also decrease, but this decrease is not due to the water vapor condensation and the oil mixing and emulsification, so heating the oil does not improve the viscosity. Thus, in one embodiment of the application, the control method further comprises: when the viscosity of the engine oil is smaller than the preset viscosity, the range-extended engine is controlled to start to heat the engine oil, the viscosity of the engine oil is obtained, if the viscosity of the engine oil does not change or changes very slightly, the viscosity of the engine oil becomes small, which is not caused by the emulsification of water vapor condensation and the mixture of the engine oil, and the engine oil is possibly aged, so that an engine oil aging warning is carried out to remind a driver or a technician of changing the engine oil so as to ensure safe and reliable operation of the engine.
Correspondingly, the application also provides a control system for controlling the start and stop of the extended-range engine, in particular to the control system which is used for controlling the start and stop of the extended-range engine by using the control method of any embodiment, and the extended-range engine is used for charging a power battery. As shown in fig. 5, fig. 5 is a schematic structural diagram of a control system according to the present application, where the control system includes:
a judging module 100, wherein the judging module 100 is used for determining whether the extended range engine 001 is in a flameout state.
A first sensor 200, wherein when it is determined that the extended-range engine 001 is in a flameout state, the first sensor 200 is configured to obtain an oil viscosity; after the oil viscosity is obtained, the judging module 100 is further configured to judge whether the extended-range engine 001 meets a first starting condition according to the oil viscosity, and if the oil viscosity is less than a preset viscosity, the judging module 100 judges that the extended-range engine 001 meets the first starting condition. The first sensor 200 is an oil quality sensor, and is located on the extended-range engine 001 for obtaining the oil viscosity.
And a control module 300, wherein when the extended-range engine 001 is judged to meet the first starting condition, the control module 300 is used for controlling the extended-range engine 001 to start so as to heat engine oil.
A second sensor 400, wherein the second sensor 400 is used for acquiring the engine oil temperature during the starting operation of the extended-range engine 001; the control module 300 is further configured to control the extended range engine 001 to stall when the oil temperature is greater than a first preset temperature. The second sensor 400 is a temperature sensor, and is located on the extended-range engine 001 for acquiring the temperature of the engine oil.
According to the above, the control system obtains the viscosity of the engine oil, and when the viscosity of the engine oil is smaller than the preset viscosity, it is determined that the extended-range engine 001 meets the first starting condition, the extended-range engine 001 is started to heat the engine oil, and the temperature of the engine oil is increased until the temperature of the engine oil is higher than the temperature at which water can be separated from the engine oil, so that water in the engine oil can be separated from the engine oil. Therefore, the control method controls the start and stop of the extended range engine 001 by monitoring the viscosity of the engine oil, and separates the water in the engine oil from the engine oil, so that the emulsification of the engine oil can be inhibited, and the safe and reliable operation of the engine can be ensured.
It should be noted that, the water vapor that is blown into the crankcase from the piston condenses, and is also related to the oil temperature of the extended-range engine and the ambient temperature where the extended-range engine is located, if the oil temperature of the extended-range engine and the ambient temperature where the extended-range engine is located are lower, the water vapor that is blown into the crankcase from the piston condenses more easily, and the probability of emulsifying the oil is also greater. Thus, in one embodiment of the application, continuing to be shown in FIG. 4, the control system further comprises:
A third sensor 500, wherein the third sensor 500 is used for acquiring the engine oil temperature when the extended-range engine 001 is in a flameout state.
And a fourth sensor 600, wherein the fourth sensor 600 is used for acquiring the ambient temperature.
The judging module 100 is further configured to judge whether the extended-range engine 001 meets a second starting condition according to the engine oil temperature and the ambient temperature, and if the engine oil temperature is less than a second preset temperature and the ambient temperature is less than a third preset temperature, judge that the extended-range engine 001 meets the second starting condition. The third sensor 500 and the fourth sensor 600 are temperature sensors, and are located on the extended-range engine 001, and are respectively used for acquiring the engine oil temperature and the ambient temperature. It should be noted that the second sensor 400 and the third sensor 500 may be the same temperature sensor, or may be two temperature sensors, as the case may be.
From the above, the control system provided by the application also controls the start and stop of the extended-range engine 001 through the engine oil temperature and the environment temperature, and heats the engine oil when the engine oil temperature and the environment temperature are lower, so as to inhibit the emulsification of the engine oil, and help to ensure the safe and reliable operation of the engine. And, the control system controls the extended-range engine to start 001 to warm up the engine oil when the extended-range engine satisfies at least one of the first start condition and the second start condition, that is, the control method controls the extended-range engine 001 to start when the extended-range engine 001 satisfies both the first start condition and the second start condition, and starts the extended-range engine 001 when the extended-range engine 001 satisfies either the first start condition or the second start condition. Therefore, the control system comprehensively considers the influence of various factors on the oil emulsification, so that the problem of oil emulsification can be more comprehensively inhibited, the oil emulsification is further inhibited, and the safe and reliable operation of an engine is ensured.
Because the extended-range engine is used for charging the power battery, the starting of the extended-range engine is also related to the electric quantity of the power battery. Thus, in one embodiment of the application, the control system further comprises:
The power module 700 is configured to obtain the power of the power battery 002.
If the electric quantity of the power battery 002 is smaller than the first set electric quantity, the control module 300 also controls the extended range engine 001 to start so as to charge the power battery 002; if the electric quantity of the power battery 002 is the second set electric quantity, the control module 300 also controls the extended range engine 001 to stop extinguishing, and stops charging the power battery 002.
Wherein the second set electrical quantity is larger than the first set electrical quantity. The first set power is the lower limit of the power battery 002, and when the power of the power battery 002 is lower than the lower limit, it indicates that the power battery 002 needs to be charged, and at this time, the extended range engine 001 is controlled to start to charge the power battery 002. The second set electric quantity is the upper electric quantity limit value of the electric quantity battery 002, and when the electric quantity of the power battery 002 is the upper electric quantity limit value, the power battery 002 is completely charged, or the electric quantity is sufficient and no charging is needed, and the extended range engine 001 is controlled to stop or maintain the stop state.
Based on the control system of any one of the above embodiments, the present application further provides an extended-range engine, which includes the control system of any one of the above embodiments.
Based on the control system of any one of the above embodiments, the present application further provides a vehicle, which includes an extended-range engine and a power battery, wherein the extended-range engine is used for charging the power battery. Wherein the extended range engine includes the control system of any of the above embodiments.
In summary, the present application provides a control method and a control system for an extended-range engine, and a vehicle, where the control method includes: if the extended-range engine is in a flameout state, the viscosity of the engine oil is obtained, if the viscosity of the engine oil is smaller than the preset viscosity, the extended-range engine is judged to meet a first starting condition, the extended-range engine is controlled to start so as to heat the engine oil, then the temperature of the engine oil is obtained, and after the temperature of the engine oil is larger than the first preset temperature, the extended-range engine is controlled to flameout, wherein the first preset temperature is the temperature at which water can be separated from the engine oil. Therefore, the control method controls the start and stop of the extended range engine by monitoring the viscosity of the engine oil, and separates the water in the engine oil from the engine oil, so that the emulsification of the engine oil can be inhibited, and the safe and reliable operation of the engine can be ensured.
In the present specification, each embodiment is described in a progressive manner, or a parallel manner, or a combination of progressive and parallel manners, and each embodiment is mainly described as different from other embodiments, and the same similar areas between the embodiments are referred to each other. For the device disclosed in the embodiment, since the device corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method area.
It should be noted that, in the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an 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 article or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in an article or device comprising the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A control method of an extended-range engine for charging a power battery, the control method comprising:
Determining whether the extended range engine is in a flameout state;
If yes, judging whether the extended-range engine meets a first starting condition; wherein determining whether the extended-range engine satisfies the first start condition includes:
Obtaining the viscosity of engine oil;
If the engine oil viscosity is smaller than the preset viscosity, judging that the extended-range engine meets a first starting condition;
if the extended-range engine is in a flameout state, judging whether the extended-range engine meets a second starting condition, wherein judging whether the extended-range engine meets the second starting condition comprises the following steps:
acquiring the temperature of engine oil;
acquiring an ambient temperature;
If the engine oil temperature is smaller than a second preset temperature and the environment temperature is smaller than a third preset temperature, judging that the extended-range engine meets a second starting condition;
when the extended-range engine meets at least one of the first starting condition and the second starting condition, controlling the extended-range engine to start, and heating engine oil;
acquiring the engine oil temperature in the starting operation process of the extended-range engine;
When the temperature of the engine oil is higher than a first preset temperature, controlling the extended range engine to flameout; the first preset temperature is a temperature at which water can be separated from engine oil;
When the extended-range engine is judged to meet the first starting condition but not meet the second starting condition, after the engine oil temperature is greater than the first preset temperature, controlling the extended-range engine to stop comprises:
when the temperature of the engine oil is higher than the first preset temperature, controlling the engine to run for a first preset time, and then controlling the extended-range engine to stop;
When the extended-range engine is judged to meet the first starting condition and the second starting condition, after the engine oil temperature is greater than the first preset temperature, controlling the extended-range engine to stall includes:
When the temperature of the engine oil is higher than the first preset temperature, controlling the engine to run for a second preset time, and then controlling the extended-range engine to stop;
The second preset time is longer than the first preset time.
2. The control method of an extended-range engine according to claim 1, characterized in that the control method further comprises:
Acquiring the electric quantity of the power battery;
if the electric quantity of the power battery is smaller than the first set electric quantity, controlling the extended range engine to start so as to charge the power battery;
acquiring the electric quantity of the power battery in the charging process of the power battery;
If the electric quantity of the power battery is larger than the second set electric quantity, controlling the extended range engine to stop extinguishing, and stopping charging the power battery;
wherein the second set electrical quantity is larger than the first set electrical quantity.
3. A control system of an extended-range engine, characterized in that start-stop of the extended-range engine is controlled by the control method according to claim 1, and the extended-range engine is used for charging a power battery, the control system comprising:
The judging module is used for determining whether the extended-range engine is in a flameout state or not;
The first sensor is used for acquiring the viscosity of engine oil when the extended range engine is determined to be in a flameout state; after the engine oil viscosity is obtained, the judging module is further used for judging whether the extended-range engine meets a first starting condition according to the engine oil viscosity, and if the engine oil viscosity is smaller than a preset viscosity, the judging module judges that the extended-range engine meets the first starting condition;
The control module is used for controlling the start of the extended-range engine to heat engine oil when judging that the extended-range engine meets a first starting condition;
The second sensor is used for acquiring the engine oil temperature in the starting operation process of the extended range engine; when the temperature of the engine oil is higher than a first preset temperature, the control module is further used for controlling the extended range engine to flameout; the first preset temperature is a temperature at which water can be separated from engine oil;
the third sensor is used for acquiring the engine oil temperature when the extended-range engine is in a flameout state;
a fourth sensor for acquiring an ambient temperature;
The judging module is further configured to judge whether the extended-range engine meets a second starting condition according to the engine oil temperature and the ambient temperature, and if the engine oil temperature is less than a second preset temperature and the ambient temperature is less than a third preset temperature, judge that the extended-range engine meets the second starting condition.
4. A control system according to claim 3, characterized in that the control system further comprises:
The electric quantity module is used for acquiring the electric quantity of the power battery;
If the electric quantity of the power battery is smaller than the first set electric quantity, the control module controls the extended range engine to start so as to charge the power battery; if the electric quantity of the power battery is the second set electric quantity, the control module controls the extended range engine to flameout and stops charging the power battery;
wherein the second set electrical quantity is larger than the first set electrical quantity.
5. An extended range engine comprising the control system of any one of claims 3-4.
6. A vehicle, characterized in that the vehicle comprises: the system comprises an extended range engine and a power battery, wherein the extended range engine is used for charging the power battery;
Wherein the extended range engine comprises the control system of any one of claims 3-4.
CN202410112214.1A 2024-01-26 2024-01-26 Control method and control system of extended-range engine, extended-range engine and vehicle Active CN117627798B (en)

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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB731575A (en) * 1952-06-20 1955-06-08 Daimler Benz Ag Improvements relating to auxiliary starting means for internal combustion engines
JP2001263123A (en) * 2000-03-16 2001-09-26 Toyota Motor Corp Automatic start and automatic stop of internal combustion engine
KR20070014722A (en) * 2005-07-29 2007-02-01 엘에스전선 주식회사 Apparatus and method for controlling engine oil supply of the gas engine
CN104044578A (en) * 2013-03-15 2014-09-17 福特全球技术公司 HYBRID-ELECTRIC VEHICLE and ENGINE STARTING METHOD
JP2015168379A (en) * 2014-03-10 2015-09-28 マツダ株式会社 Control device for hybrid vehicle
CN110067688A (en) * 2019-05-07 2019-07-30 山推工程机械股份有限公司 A kind of engine delay stops working control method and engineering truck
CN115107737A (en) * 2022-07-14 2022-09-27 东风汽车集团股份有限公司 Control method of hybrid electric vehicle, electric vehicle and storage medium
WO2023272481A1 (en) * 2021-06-29 2023-01-05 宁波吉利罗佑发动机零部件有限公司 Method and apparatus for controlling engine to shut down, and electronic device and storage medium
WO2023072700A1 (en) * 2021-10-25 2023-05-04 Jaguar Land Rover Limited Methods and apparatus for mitigating fuel in oil
CN116804383A (en) * 2023-06-21 2023-09-26 中国第一汽车股份有限公司 Method, device, equipment and storage medium for inhibiting emulsification of engine oil of hybrid vehicle
CN116950740A (en) * 2023-06-30 2023-10-27 东风商用车有限公司 Engine thermal management control method
CN117189386A (en) * 2022-05-30 2023-12-08 比亚迪股份有限公司 Engine control method, medium, electronic device and hybrid vehicle
CN117227587A (en) * 2023-10-17 2023-12-15 赛力斯汽车有限公司 Low-temperature mode control method, device and equipment for range-extended automobile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6473766B2 (en) * 2017-01-24 2019-02-20 本田技研工業株式会社 Control device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB731575A (en) * 1952-06-20 1955-06-08 Daimler Benz Ag Improvements relating to auxiliary starting means for internal combustion engines
JP2001263123A (en) * 2000-03-16 2001-09-26 Toyota Motor Corp Automatic start and automatic stop of internal combustion engine
KR20070014722A (en) * 2005-07-29 2007-02-01 엘에스전선 주식회사 Apparatus and method for controlling engine oil supply of the gas engine
CN104044578A (en) * 2013-03-15 2014-09-17 福特全球技术公司 HYBRID-ELECTRIC VEHICLE and ENGINE STARTING METHOD
JP2015168379A (en) * 2014-03-10 2015-09-28 マツダ株式会社 Control device for hybrid vehicle
CN110067688A (en) * 2019-05-07 2019-07-30 山推工程机械股份有限公司 A kind of engine delay stops working control method and engineering truck
WO2023272481A1 (en) * 2021-06-29 2023-01-05 宁波吉利罗佑发动机零部件有限公司 Method and apparatus for controlling engine to shut down, and electronic device and storage medium
WO2023072700A1 (en) * 2021-10-25 2023-05-04 Jaguar Land Rover Limited Methods and apparatus for mitigating fuel in oil
CN117189386A (en) * 2022-05-30 2023-12-08 比亚迪股份有限公司 Engine control method, medium, electronic device and hybrid vehicle
CN115107737A (en) * 2022-07-14 2022-09-27 东风汽车集团股份有限公司 Control method of hybrid electric vehicle, electric vehicle and storage medium
CN116804383A (en) * 2023-06-21 2023-09-26 中国第一汽车股份有限公司 Method, device, equipment and storage medium for inhibiting emulsification of engine oil of hybrid vehicle
CN116950740A (en) * 2023-06-30 2023-10-27 东风商用车有限公司 Engine thermal management control method
CN117227587A (en) * 2023-10-17 2023-12-15 赛力斯汽车有限公司 Low-temperature mode control method, device and equipment for range-extended automobile

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