CN113500991B - Engine control method, device, equipment and readable storage medium - Google Patents

Engine control method, device, equipment and readable storage medium Download PDF

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Publication number
CN113500991B
CN113500991B CN202110735949.6A CN202110735949A CN113500991B CN 113500991 B CN113500991 B CN 113500991B CN 202110735949 A CN202110735949 A CN 202110735949A CN 113500991 B CN113500991 B CN 113500991B
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rotating speed
engine
driving motor
target
actual
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CN113500991A (en
Inventor
龚静怡
于涛
王华武
赵峰
马彪
李春东
杨小波
黄乃勇
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Dongfeng Trucks Co ltd
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Dongfeng Trucks Co ltd
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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
    • 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
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • 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
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • 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
    • 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
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0644—Engine speed
    • 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
    • B60W2710/08—Electric propulsion units
    • B60W2710/081—Speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The invention provides an engine control method, an engine control device, engine control equipment and a readable storage medium, wherein the method comprises the following steps: obtaining a target rotating speed of the engine and an actual rotating speed of the engine at an adjusting moment, and obtaining an engine rotating speed difference value through calculation; obtaining a target rotating speed change rate of the engine and an actual rotating speed change rate of the engine; calculating to obtain a difference value of the change rate of the rotating speed of the engine; obtaining a target rotating speed of the driving motor according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor; obtaining a request rotating speed of the driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor; and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor, and adjusting the actual rotating speed of the engine based on the actual rotating speed of the driving motor. According to the invention, a flywheel mechanism is not required to be added to enable the power of the engine to be stably output, and the rotating speed of the engine is adjusted by controlling the rotating speed of the driving motor, so that the rotating speed of the engine is stably changed, and the power of the engine is stably output.

Description

Engine control method, device, equipment and readable storage medium
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to an engine control method, device and equipment and a readable storage medium.
Background
An engine is a machine capable of converting other forms of energy into mechanical energy, and is the most common and widely used power plant. Because the work of each cylinder of the engine is discontinuous, the change of the rotating speed of the engine has larger fluctuation, and the power output of the engine also has larger fluctuation. In the prior art, the flywheel mechanism is mainly added in the engine to stabilize the power output of the engine, but the addition of the flywheel mechanism leads to the increase of the weight of the engine and the increase of the cost.
Disclosure of Invention
The invention mainly aims to provide an engine control method, an engine control device, engine control equipment and a readable storage medium, and aims to solve the problems that the power of an engine can be stably output, the weight of the engine is reduced and the cost of the engine is reduced under the condition that the engine has no flywheel mechanism.
In a first aspect, the present invention provides an engine control method comprising the steps of:
obtaining a target rotating speed of the engine and an actual rotating speed of the engine at an adjusting moment, and calculating according to the target rotating speed of the engine and the actual rotating speed of the engine to obtain an engine rotating speed difference value;
obtaining the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjusting moment is reached;
calculating according to the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine to obtain an engine rotating speed change rate difference value;
obtaining a target rotating speed of the driving motor according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor;
obtaining a request rotating speed of a driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor;
and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor.
Optionally, the step of obtaining the target rotation speed of the driving motor according to the positive and negative of the difference value of the change rates of the engine rotation speeds and the actual rotation speed of the driving motor includes:
if the difference value of the change rates of the engine rotating speeds is negative, taking the sum of the actual rotating speed of the driving motor and a preset value as the target rotating speed of the driving motor;
and if the difference value of the change rates of the engine rotating speeds is positive, taking the difference value of the actual rotating speed of the driving motor and the preset value as the target rotating speed of the driving motor.
Optionally, the step of obtaining the requested rotation speed of the driving motor according to the engine rotation speed difference and the target rotation speed of the driving motor includes:
substituting the engine rotating speed difference value and the target rotating speed of the driving motor into a preset formula to obtain the requested rotating speed of the driving motor, wherein the preset formula is as follows:
the requested rotating speed of the driving motor is equal to the target rotating speed of the driving motor plus the rotating speed difference of the engine, and the transmission speed ratio of the driving motor and the engine is equal to the requested rotating speed of the driving motor.
Optionally, the step of obtaining the target engine speed at an adjustment time includes:
and according to the opening degree and the fuel injection quantity of the accelerator at an adjusting moment, looking up a table to obtain the target rotating speed of the engine.
Optionally, the engine is free of a flywheel mechanism.
In a second aspect, the present invention also provides an engine control device including:
a first obtaining module: the device is used for acquiring the target rotating speed of the engine and the actual rotating speed of the engine at an adjusting moment, and calculating to obtain an engine rotating speed difference value according to the target rotating speed of the engine and the actual rotating speed of the engine;
a second obtaining module: the method is used for acquiring the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjustment moment is reached;
a calculation module: the engine speed change rate difference value is obtained by calculation according to the target engine speed change rate and the actual engine speed change rate;
a first adjustment module: the target rotating speed of the driving motor is obtained according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor;
a second adjustment module: the system is used for obtaining the requested rotating speed of the driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor;
an adjusting module: and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor.
Optionally, the first adjusting module is specifically configured to:
if the difference value of the change rates of the engine rotating speeds is negative, taking the sum of the actual rotating speed of the driving motor and a preset value as the target rotating speed of the driving motor;
and if the difference value of the change rates of the engine rotating speeds is positive, taking the difference value of the actual rotating speed of the driving motor and the preset value as the target rotating speed of the driving motor.
Optionally, the second adjusting module is specifically configured to:
substituting the engine rotating speed difference value and the target rotating speed of the driving motor into a preset formula to obtain the requested rotating speed of the driving motor, wherein the preset formula is as follows:
the requested rotating speed of the driving motor is equal to the target rotating speed of the driving motor plus the rotating speed difference of the engine, and the transmission speed ratio of the driving motor and the engine is equal to the requested rotating speed of the driving motor.
In a third aspect, the present invention also provides an engine control apparatus comprising a processor, a memory, and an engine control program stored on the memory and executable by the processor, wherein the engine control program, when executed by the processor, implements the steps of the engine control method as described above.
In a fourth aspect, the present invention also provides a readable storage medium having an engine control program stored thereon, wherein the engine control program, when executed by a processor, implements the steps of the engine control method as described above.
In the invention, the target rotating speed of the engine and the actual rotating speed of the engine are obtained at an adjusting moment, and the difference value of the rotating speeds of the engine is obtained by calculation according to the target rotating speed of the engine and the actual rotating speed of the engine; obtaining the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjusting moment is reached; calculating according to the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine to obtain an engine rotating speed change rate difference value; obtaining a target rotating speed of the driving motor according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor; obtaining a request rotating speed of the driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor; and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor. According to the invention, a flywheel mechanism is not required to be added to enable the power of the engine to be stably output, and the rotating speed of the engine is regulated by controlling the rotating speed of the driving motor to enable the rotating speed of the engine to be stably changed, so that the power of the engine is stably output, the weight of the engine is reduced, and the cost of the engine is reduced.
Drawings
Fig. 1 is a schematic diagram of a hardware configuration of an engine control apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the engine control method of the present invention;
fig. 3 is a functional block diagram of the first embodiment of the engine control apparatus 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
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In a first aspect, an embodiment of the present invention provides an engine control apparatus.
Referring to fig. 1, fig. 1 is a schematic diagram of a hardware configuration of an engine control apparatus according to an embodiment of the present invention. In an embodiment of the present invention, the engine control device may include a processor 1001 (e.g., a Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used for implementing connection communication among the components; the user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WI-FI interface, WI-FI interface); the memory 1005 may be a Random Access Memory (RAM) or a non-volatile memory (non-volatile memory), such as a magnetic disk memory, and the memory 1005 may optionally be a storage device independent of the processor 1001. Those skilled in the art will appreciate that the hardware configuration depicted in FIG. 1 is not intended to be limiting of the present invention, and may include more or less components than those shown, or some components in combination, or a different arrangement of components.
With continued reference to FIG. 1, the memory 1005 of FIG. 1, which is one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and an engine control program. The processor 1001 may call an engine control program stored in the memory 1005, and execute the engine control method according to the embodiment of the present invention.
In a second aspect, an embodiment of the invention provides an engine control method.
In one embodiment, referring to fig. 2, fig. 2 is a flow chart illustrating a first embodiment of the engine control method according to the present invention. As shown in fig. 2, the engine control method includes the steps of:
s10: obtaining a target rotating speed of the engine and an actual rotating speed of the engine at an adjusting moment, and calculating according to the target rotating speed of the engine and the actual rotating speed of the engine to obtain an engine rotating speed difference value;
in this embodiment, at an adjustment time, the actual rotational speed of the engine collected by the sensor is received, and the target rotational speed of the engine is obtained by looking up a table, and the engine rotational speed difference between the target rotational speed of the engine and the actual rotational speed of the engine is calculated. If the target rotating speed of the engine is 20r/min and the actual rotating speed of the engine is 30r/min, the rotating speed difference value of the engine is-10 r/min. If the target rotating speed of the engine is 40r/min and the actual rotating speed of the engine is 30r/min, the rotating speed difference value of the engine is 10 r/min. It is easy to think that the parameters and the manner of obtaining the target engine speed and the actual engine speed in the present embodiment are only used as references herein, and are not limited.
Further, in one embodiment, the step of obtaining the target engine speed at an adjustment time includes:
and looking up a table according to the accelerator opening and the fuel injection quantity at an adjusting moment to obtain the target rotating speed of the engine.
In the embodiment, the target engine revolution meter is established according to data obtained by an actual engine test, and the target engine revolution corresponding to the opening degree of the accelerator and the fuel injection quantity is obtained based on the target engine revolution meter. Wherein, the fuel injection quantity is calculated by an engine controller. It is easy to think that the way of obtaining the target engine speed in the present embodiment is only used as a reference and is not limited.
S20: acquiring the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjusting moment is reached;
in this embodiment, the target rotation speed is set at each adjustment time, and the target rotation speed of the engine is not changed until the next adjustment time, so that the target rotation speed change rate of the engine acquired by the sensor for the last time before the next adjustment time is reached is 0, and the actual rotation speed change rate of the engine is any rational number.
S30: calculating according to the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine to obtain an engine rotating speed change rate difference value;
in the present embodiment, the engine speed change rate difference is calculated from the engine target speed change rate and the engine actual speed change rate obtained in step S20. Since the target engine speed change rate obtained in step S20 is 0, if the actual engine speed change rate obtained in step S20 is 2, the engine speed change rate difference is-2; if the actual engine speed change rate acquired in step S20 is-2, the engine speed change rate difference is 2. It is to be understood that the parameters of the present embodiment are provided herein by reference only and not by way of limitation.
S40: obtaining a target rotating speed of the driving motor according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor;
in this embodiment, the actual rotation speed of the driving motor at the current time is determined to be increased or decreased based on the actual rotation speed of the driving motor at the current time and the PI regulation control according to the positive or negative of the difference value of the change rates of the engine rotation speeds, so as to obtain the target rotation speed of the driving motor at the next time. The PI regulator is a linear controller, which forms a control deviation from a given value and an actual output value, and linearly combines the proportion and integral of the deviation to form a control quantity to control a controlled object. The proportion regulation function is as follows: the deviation of the system is reflected in proportion, and once the deviation occurs in the system, the proportion adjustment immediately generates adjustment action to reduce the deviation.
Further, in an embodiment, the step S40 further includes:
if the difference value of the change rates of the engine rotating speeds is negative, taking the sum of the actual rotating speed of the driving motor and a preset value as the target rotating speed of the driving motor;
and if the difference value of the change rates of the engine rotating speeds is positive, taking the difference value of the actual rotating speed of the driving motor and the preset value as the target rotating speed of the driving motor.
In this embodiment, if the difference value of the change rates of the engine rotation speeds is negative, the actual rotation speed of the driving motor needs to be increased, and if the preset value is 30r/min, the actual rotation speed of the driving motor at the current moment is 45 r/min. And increasing 30r/min on the basis of the actual rotating speed of the current driving motor to obtain the target rotating speed of the driving motor of 75 r/min.
If the difference value of the change rates of the engine rotating speeds is positive, the actual rotating speed of the driving motor needs to be reduced, and if the preset value is 30r/min, the actual rotating speed of the driving motor at the current moment is 105 r/min. And reducing the actual rotating speed of the current driving motor by 30r/min to obtain the target rotating speed of the driving motor of 75 r/min. Wherein the preset value is determined according to the specific configuration of the engine. It is to be understood that the parameters of the present embodiment are provided herein by reference only and not by way of limitation.
S50: obtaining a request rotating speed of a driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor;
in this embodiment, the target rotation speed of the drive motor obtained in step S40 is further adjusted according to the engine rotation speed difference, so as to obtain the requested rotation speed of the drive motor. The specific mode of adjusting the target rotating speed of the driving motor according to the rotating speed difference value of the engine is as follows: if the engine speed difference is negative, reducing the target speed of the driving motor; and if the engine speed difference is positive, increasing the target speed of the driving motor.
Further, in an embodiment, the step S50 further includes:
substituting the engine rotating speed difference value and the target rotating speed of the driving motor into a preset formula to obtain the requested rotating speed of the driving motor, wherein the preset formula is as follows:
the requested rotating speed of the driving motor is equal to the target rotating speed of the driving motor plus the rotating speed difference of the engine, and the transmission speed ratio of the driving motor and the engine is equal to the requested rotating speed of the driving motor.
In this embodiment, if the engine speed difference is-10, the transmission speed ratio of the driving motor to the engine is 2.5. When the target rotating speed of the driving motor is 75r/min, through a preset formula: the requested rotating speed of the driving motor is calculated to be 50r/min, and at the moment, the requested rotating speed of the driving motor is reduced by 25r/min relative to the target rotating speed of the driving motor, namely the requested rotating speed of the driving motor is obtained by reducing 25r/min on the basis of the target rotating speed of the driving motor.
If the engine speed difference is 10, the transmission speed ratio of the driving motor to the engine is 2.5, and when the target speed of the driving motor is 75r/min, the driving motor is driven to rotate at the speed ratio according to a preset formula: the requested rotating speed of the driving motor is obtained by calculating the requested rotating speed of the driving motor, namely the target rotating speed of the driving motor plus the difference value of the rotating speed of the engine and the transmission speed ratio of the driving motor and the engine, and the requested rotating speed of the driving motor is 100r/min, at the moment, the requested rotating speed of the driving motor is increased by 25r/min relative to the target rotating speed of the driving motor, namely the requested rotating speed of the driving motor is obtained by increasing 25r/min on the basis of the target rotating speed of the driving motor. It is to be understood that the parameters of the present embodiment are provided herein by reference only and not by way of limitation.
S60: and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor.
In this embodiment, when the next adjustment time is reached, the actual rotational speed of the driving motor is controlled according to the acquired requested rotational speed of the driving motor, that is, the actual rotational speed of the driving motor is made to be consistent with the requested rotational speed of the driving motor. For example, when the requested rotation speed of the driving motor is 50r/min, the actual rotation speed of the driving motor is controlled at 50 r/min. If the transmission speed ratio of the driving motor and the engine in the power transmission system is 2.5, the power transmission system adjusts the actual rotating speed of the engine according to the transmission speed ratio of the driving motor and the engine, and the actual rotating speed of the engine is adjusted to be 20 r/min.
And if the requested rotating speed of the driving motor is 100r/min, controlling the actual rotating speed of the driving motor to be 100 r/min. If the transmission speed ratio of the driving motor and the engine in the power transmission system is 2.5, the power transmission system adjusts the actual rotating speed of the engine according to the transmission speed ratio of the driving motor and the engine, and the actual rotating speed of the engine is adjusted to be 40 r/min. It is to be understood that the parameters of the present embodiment are provided herein by reference only and not by way of limitation.
In the embodiment, the target rotating speed of the engine and the actual rotating speed of the engine are obtained at an adjusting moment, and the difference value of the rotating speeds of the engine is obtained by calculation according to the target rotating speed of the engine and the actual rotating speed of the engine; obtaining the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjusting moment is reached; calculating according to the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine to obtain an engine rotating speed change rate difference value; obtaining a target rotating speed of the driving motor according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor; obtaining a request rotating speed of the driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor; and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor. Through this embodiment, need not to increase flywheel mechanism and go to make engine power stable output, go to adjust engine speed through control driving motor rotational speed, make engine speed stable change to make engine power stable output, alleviateed engine weight, reduced engine cost.
Further, in one embodiment, the engine is free of a flywheel mechanism.
In the embodiment, the driving motor replaces an original flywheel mechanism, so that the weight of the engine is reduced, and the cost of the engine is reduced. In the prior art, when an engine with a flywheel mechanism works, a main transmission flywheel disc rotating in a fixed flywheel shell and an auxiliary transmission flywheel disc of a generator are driven to rotate through the rotation of a power output shaft of a tractor engine, so that the rotating speed of the power output shaft of the engine is directly transmitted to the generator, the rotating speed of the generator reaches the rated required rotating speed, the rotating speed of the generator and the rotating speed of the power output shaft are kept synchronous, a transmission part connected with the generator is omitted, and the stability of the generator is stronger. The power output of the driving motor is linear characteristic, and the power output of the engine is curve characteristic.
In a third aspect, an embodiment of the present invention further provides an engine control apparatus.
In one embodiment, referring to fig. 3, fig. 3 is a functional block diagram of a first embodiment of the engine control apparatus according to the present invention. As shown in fig. 3, the engine control device includes:
the first acquisition module 10: the device is used for acquiring the target rotating speed of the engine and the actual rotating speed of the engine at an adjusting moment, and calculating to obtain an engine rotating speed difference value according to the target rotating speed of the engine and the actual rotating speed of the engine;
the second acquisition module 20: the method is used for acquiring the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjustment moment is reached;
the calculation module 30: the engine speed change rate difference value is obtained by calculation according to the target engine speed change rate and the actual engine speed change rate;
the first adjustment module 40: the target rotating speed of the driving motor is obtained according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor;
the second adjustment module 50: the system is used for obtaining the requested rotating speed of the driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor;
the adjusting module 60: and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor.
Further, in an embodiment, the first adjusting module 40 is specifically configured to:
if the difference value of the change rates of the engine rotating speeds is negative, taking the sum of the actual rotating speed of the driving motor and a preset value as the target rotating speed of the driving motor;
and if the difference value of the change rates of the engine rotating speeds is positive, taking the difference value of the actual rotating speed of the driving motor and the preset value as the target rotating speed of the driving motor.
Further, in an embodiment, the second adjusting module 50 is specifically configured to:
substituting the engine rotating speed difference value and the target rotating speed of the driving motor into a preset formula to obtain the requested rotating speed of the driving motor, wherein the preset formula is as follows:
the requested rotating speed of the driving motor is equal to the target rotating speed of the driving motor plus the rotating speed difference of the engine, and the transmission speed ratio of the driving motor and the engine is equal to the requested rotating speed of the driving motor.
Further, in an embodiment, the first obtaining module 10 is specifically configured to:
and according to the opening degree and the fuel injection quantity of the accelerator at an adjusting moment, looking up a table to obtain the target rotating speed of the engine.
Further, in one embodiment, the engine is free of a flywheel mechanism.
The function implementation of each module in the engine control device corresponds to each step in the above embodiment of the engine control method, and the function and implementation process are not described in detail herein.
In a fourth aspect, the embodiment of the present invention further provides a readable storage medium.
The readable storage medium of the present invention stores an engine control program, wherein the engine control program, when executed by a processor, implements the steps of the engine control method as described above.
The method for implementing the engine control program when executed may refer to various embodiments of the engine control method of the present invention, and will not be described herein again.
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 system 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 system. 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 system that comprises the element.
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.
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 causing a terminal device to execute the method according to the embodiments of the present invention.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
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 (10)

1. An engine control method, characterized by comprising:
obtaining a target rotating speed of the engine and an actual rotating speed of the engine at an adjusting moment, and calculating to obtain an engine rotating speed difference value according to the target rotating speed of the engine and the actual rotating speed of the engine, wherein the engine rotating speed difference value is obtained by subtracting the actual rotating speed of the engine from the target rotating speed of the engine;
obtaining the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjusting moment is reached;
calculating to obtain an engine rotating speed change rate difference value according to the engine target rotating speed change rate and the engine actual rotating speed change rate, wherein the engine rotating speed change rate difference value is obtained by subtracting the engine actual rotating speed change rate from the engine target rotating speed change rate;
obtaining a target rotating speed of the driving motor according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor;
obtaining a request rotating speed of the driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor;
and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor.
2. The engine control method according to claim 1, wherein the step of obtaining the target rotation speed of the drive motor based on the positive or negative of the difference in the rate of change of the engine speed and the actual rotation speed of the drive motor comprises:
if the difference value of the change rates of the engine rotating speeds is negative, taking the sum of the actual rotating speed of the driving motor and a preset value as the target rotating speed of the driving motor;
and if the difference value of the change rates of the engine rotating speeds is positive, taking the difference value of the actual rotating speed of the driving motor and the preset value as the target rotating speed of the driving motor.
3. The engine control method according to claim 1, wherein the step of obtaining the requested rotation speed of the drive motor based on the engine rotation speed difference and the target rotation speed of the drive motor comprises:
substituting the engine rotating speed difference value and the target rotating speed of the driving motor into a preset formula to obtain the requested rotating speed of the driving motor, wherein the preset formula is as follows:
the requested rotating speed of the driving motor is equal to the target rotating speed of the driving motor plus the rotating speed difference of the engine, and the transmission speed ratio of the driving motor and the engine is equal to the requested rotating speed of the driving motor.
4. The engine control method according to claim 1, wherein the step of obtaining the target engine speed at an adjustment timing includes:
and looking up a table according to the accelerator opening and the fuel injection quantity at an adjusting moment to obtain the target rotating speed of the engine.
5. The engine control method according to claim 1, characterized in that the engine is a freewheel mechanism.
6. An engine control apparatus, characterized by comprising:
a first obtaining module: the device is used for obtaining the target rotating speed of the engine and the actual rotating speed of the engine at an adjusting moment, and calculating to obtain an engine rotating speed difference value according to the target rotating speed of the engine and the actual rotating speed of the engine, wherein the engine rotating speed difference value is obtained by subtracting the actual rotating speed of the engine from the target rotating speed of the engine;
a second obtaining module: the method is used for acquiring the target rotating speed change rate of the engine and the actual rotating speed change rate of the engine, which are acquired by the sensor for the last time before the next adjustment moment is reached;
a calculation module: the engine speed change rate difference value is obtained by calculating according to the target engine speed change rate and the actual engine speed change rate, and is obtained by subtracting the actual engine speed change rate from the target engine speed change rate;
a first adjustment module: the target rotating speed of the driving motor is obtained according to the positive and negative of the difference value of the rotating speed change rate of the engine and the actual rotating speed of the driving motor;
a second adjustment module: the system is used for obtaining the requested rotating speed of the driving motor according to the engine rotating speed difference value and the target rotating speed of the driving motor;
an adjusting module: and when the next adjusting moment is reached, controlling the actual rotating speed of the driving motor based on the requested rotating speed of the driving motor so as to adjust the actual rotating speed of the engine by the power transmission system based on the actual rotating speed of the driving motor.
7. The engine control apparatus of claim 6, wherein the first adjustment module is specifically configured to:
if the difference value of the change rates of the engine rotating speeds is negative, taking the sum of the actual rotating speed of the driving motor and a preset value as the target rotating speed of the driving motor;
and if the difference value of the change rates of the engine rotating speeds is positive, taking the difference value of the actual rotating speed of the driving motor and the preset value as the target rotating speed of the driving motor.
8. The engine control apparatus of claim 6, wherein the second adjustment module is specifically configured to:
substituting the engine rotating speed difference value and the target rotating speed of the driving motor into a preset formula to obtain the requested rotating speed of the driving motor, wherein the preset formula is as follows:
the requested rotating speed of the driving motor is equal to the target rotating speed of the driving motor plus the rotating speed difference of the engine, and the transmission speed ratio of the driving motor and the engine is equal to the requested rotating speed of the driving motor.
9. An engine control apparatus comprising a processor, a memory, and an engine control program stored on the memory and executable by the processor, wherein the engine control program, when executed by the processor, implements the steps of the engine control method of any one of claims 1 to 5.
10. A readable storage medium, characterized in that an engine control program is stored thereon, wherein the engine control program, when executed by a processor, implements the steps of the engine control method according to any one of claims 1 to 5.
CN202110735949.6A 2021-06-30 2021-06-30 Engine control method, device, equipment and readable storage medium Active CN113500991B (en)

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